Vortec 454 heads 1l to put in my 442 curious about parts interchange i have a solid rolelr cam and lifters and a set of aluminum heads can i use all of this on a 8. 300 206. Oval port intake manifold engines. Popular recommendation has been to replace the stock peanut port heads with '96 and newer 454 vortec heads. Aug 21, 2002 · I want to build some sort of big block for my burban but cant decide what. Part Number: SUM-151124 Estimated Ship Date: Monday 6/2/2025 Mar 31, 2025 · Cylinder Head, PowerOval® 280, Aluminum, Assembled, 113cc Chamber, 280cc Intake, Chevy, Big Block, Each. 040 in. 500 238. 190 intake valve, no back cut, 4. We also found that the intake valve in the Vortec head is 2. Dropping in the GM ZZ502 cam with the matching springs seem to be a popular option for the 454 Vortec motors and should get you to the power level you want with no other changes. Aug 14, 2014 · Many aftermarket heads, such as this Edelbrock Performer RPM 454-R, are rectangular port aluminum with open combustion chambers, similar to the fabled LS6/LS7 production heads. Is it logical to knock a little of the vane down a bit in search of flow at the sacrifice of swirl, or leave it. Either way, it'll run WOT as long as I want and not detonate. Engineered to deliver maximum airflow and combustion efficiency, these Vortec Heads are optimized to enhance engine performance and deliver an exhilarating driving experience. 4. 500 242 . (Photo Courtesy Edelbrock) Modern competition heads usually have heart-shaped combustion chambers to minimize chamber volume and increase the quench area. If you use aftermarket performance bolts like ARP's, you should follow the recommended torque specifications. It has 9. Cylinder Head, Vortec, Assembled, Cast Iron, 64cc Chamber, 170cc Intake Runner, Chevy, Small Block, Each Find CHEVROLET 7. 456" for head #1 , and . It was upgraded with a hydraulic roller camshaft, revised cylinder heads, 9. 065"/1. information : combustion chamber : 118cc. but pull real hard and great for a 5k rpm motor or less on the street Sep 27, 2023 · This is a SET of Rebuilt OE Stock VORTEC GEN VI 7. 10 Cylinder Head, Vortec, Assembled, Cast Iron, 64cc Chamber, 170cc Intake Runner, Chevy, Small Block, Each Find CHEVROLET 7. 00-inch stroke) that many remember and still lust after to this day. 7L Vortec heads were the "hot tip" for small-blocks. 4L/454 Chevy big block Gen VI Cylinder Heads and get Free Shipping on Orders Over $109 at Summit Racing! Cylinder Head, Vortec, Assembled, Cast Dec 27, 2014 · I have a gen v 454. Aug 21, 2007 · I'm looking for a good set of heads and a cam for my Vortec 454 powered Silverado. The 049/781 large chamber heads in particular want the small dome 454 pistons to get the cr up in the ball park. 0 to 1. If there's photos to be had of sawed-apart L-29 heads, I'd love to see them, too. 4L/454 Vortec marine engines made from 1991-newer. 310 bore, tested @ 28 inches. Aug 24, 2021 · I made a few posts on my 454 rebuild and hop-up in the general vortec thread that really should be in a new thread, so here it is. The conclusion was that swapping from peanut port to Vortec heads provided modest power gains. 4L 454 Vortec BBC Cylinder Head Oval Port Open Chamber SET. My 97 K3500 extended cab dually has 230,000 hard miles, so I bought a L29 7. 400 226 . Jul 19, 2023 · Chevy’s Gen VI, Vortec 7400 L29 7. Nov 16, 2011 · I will decide on the appropriate rear gear after the 454 is running. Find CHEVROLET 7. Small 99cc combustion chambers allow the compression ratio to be raised one full point over most stock 119cc chambers & large oval ports flow better than other factory oval port Shop Chevy 454 Cylinder Heads and get Free Shipping on orders over $175 at Speedway Motors, the Racing and Rodding Specialists. Part Number: TFS-41310001-M13 Mar 6, 2017 · I have a Mark IV 454 in my '79 truck and adding the L-29 heads will bump the compression up from a dismal 7. Unported Vortec heads are turds for genuine performance. Sep 11, 2024 · Vortec Car & Truck Cylinder Heads & Parts, Mercruiser 454 Complete Inboard Gas Engines, Diesel Compression Testers, Automotive Compression & Vacuum Testers, Mityvac Automotive Compression and Vacuum Testers, Cylinder Heads & Parts for Honda Civic, Cylinder Heads & Parts for Ford Focus, Cylinder Heads & Parts for Ford Mustang, Dec 30, 2021 · If your 454 has the dished or the flat top pistons that is going to be the cork in getting to where you want to be at with any of these heads. and requires a Vortec-style intake manifold; modifying the head to accept an early intake manifold is not recommended. 100 121 . 4L / 454 Cylinder Head Assembly's. I have a set of Vortec L-29 heads on my Mk IV 454 boat engine. 4L/L29 cylinder heads being the "hot tip" for big-blocks the same way the 5. . I'm running a ZZ502 cam, long tube headers, 4" Nov 17, 2011 · I will decide on the appropriate rear gear after the 454 is running. 4:1 compression ratio, and a long runner multi-port fuel injection system. Dec 19, 2018 · The OP's engine in his truck is a 1994 Gen V 454 engine. The Vortec heads have hardened valve seat inserts, too. So it's true that there's a wide variance from head-to-head. 190 intake valve installed. I got about 200 RPM more out of the engine than with the original heads, but I changed everything from the head gaskets up. 300 205. Very disappointing. Dec 17, 2007 · 69 elCamino 454 10. Moly and other lubes offer reduced friction and increased bolt tension, which will affect the torque figure. Not Yet Reviewed. Big block vortec heads aren't different like vortec small block heads and intakes will interchange. Part Number: VRE-2CC5. Does anybody make a high performance carbureted intake for the Vortec engine? Would it be a good engine to build to 500 hp? Thanks. Aug 20, 2015 · The boat had "about" the same with either the 454 Vortec heads and the crappy OEM pistons and block machining, and thin head gaskets; or the new engine with proper block machining and larger-combustion chamber heads, small-dome pistons and thicker gaskets. 200 165 . Im being told you cant use just any head due to the water passages being different,(something about using special head gasket) and I have to use an after market oil pan that are $$$. 200 144. L-29 heads on a 4500-5000 rpm tow rig, small dish flat top formerly peanut head '88 454, mild cam. Jan 25, 2005 · That's what he has are the L29 Vortec heads. Hell, no. This is an aftermarket replacement cylinder head for Mercruiser, Volvo Penta, OMC, and GM marine 7. 4 Vortec, this presents a problem. 708" Jan 25, 2010 · Re: 454 vortec heads « Reply #2 on: January 26, 2010, 06:38:43 am » big block vortecs arent like sbc vortecs, they quite breathing at 5000 then drop on there face. After reading every post I could find on the net about the 10141279 Vortec heads I have decided that they will not be used on this build. Thread starter BNielsen; This is a great leap, as you have to pull the heads and have the valve stem guides machined down. Nice. 725" Chamber Volume CC: 99cc Spark Plug Position: Angled Spark Plug Size: 14mm Spark Plug Reach: 0. They are going to replace a set of peanut port heads on a 454. Apr 22, 2024 · The new Mark IV big block provided enthusiasts with the popular 396 and 427 big blocks of the era. 300 198 . 0 inch stroke. 550 Done Good Port. 500 245. Jan 17, 2025 · The L29 is considered the Gen 6 big block, with 4 bolt mains and a 1 piece rear-main seal. They have a 100cc chamber which will maintain your compression ratio. I can port match the OE lower intake to the larger ports of an aftermarket cylinder head. Much better in all respects. The vortec heads have no heat ports to the intake runners to operate the EGR. The Vortec 7400 was basically a 454 big block with a hydraulic roller camshaft and lifters, as well as parts more suitable for use in light-duty trucks and more advanced One standout feature of this cylinder head is its compatibility with the 279 BBC heads and 454 Vortec heads. 00. 9-8. Jun 2, 2014 · General Q & A - L-29 heads question? - Long story short, doesn't a 1999 454 mpi 310hp (non mag) have the L-29 vortech heads that was used on the old thread "330 on roids" 454 build, correct?? Since there's so much info coming from all types of people on the web it gets quite confusing. This warranty does NOT cover the following Installation of incorrect parts. Nov 3, 2014 · Allowing for . 1l intake to use distributor to use? Nov 16, 2008 · There was a write up on these heads years ago in Chevy High Performance (the Chevy Thunder advertising insert) but the flow chart was terribly screwed up. Apr 29, 2012 · Hello BBC experts, and thanks for your help! I have a gen 6 454 in my truck. This is a BRAND NEW marine cylinder head for all 7. Does your 454 have flat tops like the L2377 piston or a oem piston with a slight dish top. About 5000--5200 rpm is their upper limit; I'm told porting does wonders. Cyl Head, CHEV 454 91-95 CYL HEAD. That’s because the OEM “black box” 454 Vortec powertrain control module (PCM) is not tunable. One area the 454 Vortec sorely lacks in is fuel economy, but that’s somewhat expected from a Chevy big block. Reg: 04-20-03 Nov 16, 2014 · So yesterday, I scored a set of L29 heads from Pick N Pull for a total of $45. They're quite acceptable for general run-around, daily-driver use. Aug 11, 2015 · Flow test on the un ported 236 heads with a 2. 1 day ago · Summit Racing™ Vortec Cast Iron Cylinder Heads SUM-151124 SUM-151124. 0/1 CR, roller cam and broad powerband from idle to 5000, then the 454 Vortec is the way to go. 4L/454 Cylinder Heads and get Free Shipping on Orders Over $109 at Summit Racing! Cylinder Head, Vortec, Assembled, Cast Iron, 64cc Chamber Jun 18, 2023 · Getting rid of the factory tune is almost always a great way to free up some extra horsepower and torque and gain some fuel economy. Bad Port. Hell, I have an Edelbrock carbureted intake on a 454HO with L29 heads. Both of these heads are 1997 castings, and I'm pretty sure they're off the same engine. What I thought would make a good engine is vortec 454 heads on a normal TBI 454 with a few little doo-dads May 9, 2009 · GEN 6 BBC 454 Stock shortblock (1997 I think) 9:1 compression Vortec L29 Heads 99cc chamber volume (small ovals) Further Head specs-Intake Port Flows CFM @ Lift 63 . 4 OHV V8 (1996-2000) Compatible with Chevy Silverado K3500 Series trucks; Key Features. 400 238. 0 to a beautiful 9. The heads look good (although greasy and oily) and have a rebuilder tag. Apr 11, 2025 · This is a SET of Rebuilt OE VORTEC GEN V, VI 7. Towing reduces that considerably, to about 8-9 mpg for a decent load, and even less for larger ones. So do I have to get a special chip made to "eliminate" the EGR from the Dec 4, 2020 · The Vortec (L29) heads have a bigass ski-jump in the port, just like the crappy TBI small-block "swirl port" heads. Dear Old Dad departed a few years ago. 060 inches in diameter, and the Aug 9, 2010 · Are Vortec 454 heads better than the older 454 heads? Or is that just true for the small blocks? I am thinking that I heard the Vortec 454 heads aren't any better but I cant remember for sure. Superior Durability: Constructed from high-strength materials, this cylinder head is much thicker and stronger in all the critical areas compared to the factory head Mar 22, 2007 · 1996 to 2000 Vortec L29 454’s will accept any old carbureted/TBI BBC intake like any other old big block, unlike the Vortec small blocks where the intake bolts were fashioned differently. Then add a little bit of cam, and between the cylinder head flow gains, cam gains, and compression gains, maybe I could get the torque up close to 500ft lbs. The truck is used mainly for work/towing but I also plan to race it some too. The Vortec GEN VI GM heads I recommended and have used a many times myself fit the GEN V blocks just nicely with any GEN V -GEN VI head gasket set. Any short deck, big-block intake should bolt right up to the vortec heads as long as they haven't been milled down excessively, so intake is good, too. 89 valves, BG 850 double pumper, Air gap intake, Jeep steering box, hydroboost, 4 wheel disc brakes GMC Sierra Chevy Silverado 454 7. At May 28, 2013 · Guys, I'd like to know if the Vortec 454 offers a much better performance over the normal older head like the case of the old 350 Vortec head out performs gigantically its older non-vortec counterpart. $585. 4L/454 Cylinder Heads Cast iron Cylinder Oct 1, 2005 · The last generation big-block by GM (Vortec 454) leaves much to be desired when it comes to output. But it would be the 454 entering the chat in 1970 (using the same 4. Just driving without anything being towed is typically about 14-15 mpg highway and 11-12 mpg in the city. 5 out of 5 stars. 400 228. 600 Valve Size: 2. 4L/454 Cylinder Heads and get Free Oct 5, 2020 · The Official Vortec 454 Info thread. It's got flat top pistons. 250 bore size and 4. I would just do a cam change. 4L engines used between the years 1991-newer and comes complete with valves and springs. 4 OHV V8 Cylinder Head Compatibility. also please let me know where and how expensive these heads could be found, in stock condition. Chevy 454 Cylinder Heads in-stock with same-day shipping. 050" safety margin, and using the minimum clearance for each head, max safe valve lift on the two heads would be . 550 Done 2. I don't know how much of the improvement was due to the heads alone. 200 143. 049's would be a good head but have 119cc chambers which will kill your CR unless you add domed pistons. I dropped L29 heads onto the 454 in my boat. A freshened up (rings, bearings, valvejob, gasket set) Vortec is a good replacement for an original 396 or 454 hyd cam motor car with a stock converter and high gears. Jul 18, 2014 · Vortec 454, stock heads, but idk what the stock lift limits are. 4L 454 engines. Its interesting to compare these flow numbers with other heads of the muscle car era. Nov 4, 2022 · I made a few posts on my 454 rebuild and hop-up in the general vortec thread that really should be in a new thread, so here it is. 4L / 454 Cylinder Heads 1996-2000 * information : combustion chamber : 100cc Jan 6, 2015 · Pretty much ANY cylinder BBC head is going to have high flowing ports than the OE Vortec heads do. I have 781s now, would like to switch to fuel injection and possibly some better heads if the Vortecs ARE better. Free delivery. 4/454 from a rolled suburban to rebuild and swap in. I bought a pair. Categories; Contact Us; This head can be mildly ported and milled up to 0. Fits GMC Sierra 454 7. Aug 7, 2010 · The stock Vortec 7400 heads are net lash- to do much w/them the first thing that would be needed is to swap out the studs and lock nuts for adjustable ones. Aug 5, 2009 · Vortec heads are a bolt-on minor upgrade to UNPORTED round-port heads. It is mainly a tow rig. May 10, 2005 · Less casting flash, etc. The tops of the GEN V and GEN VI blocks are identical on the decks and openings. These specs are for stock-type bolts with light engine oil applied to the threads and the underside of the bolt head. GM Chevrolet GMC 7. Dec 5, 2010 · You can use heads off a later vortec 454. I was just planning on just a K&N Intake, Hooker Headers with full exhaust, tuning, a shift kit and removing all of the emissions equipment but I have decided to throw on some heads and Find 1999 CHEVROLET 7. The engine ran very well but it was very very slow. Oct 2, 2022 · Vortec MPG. 4L/454 Chevy big block Gen VI Cylinder Heads and get Trick Flow Makes Serious Horsepower! 1-330-630-1555 • 1-888-841-6556. . Sep 6, 2009 · Old thread, but it suits my questions. Part Number: NAL-10141280. 5 compression Comp hyd roller 232@050 578 lift 106 lc Edelbrock aluminum heads, 2. Eliminate the exhaust rotators and get the 3/8 x 7/16 conversion studs. Both Vortec 7400 heads (the '98-'01 12560241 and the '96-'01 10141279) are about 100cc, as a comparison. 4 L (454 cid) V8 was a truck version of the engine. Bare L29 Vortec BB Chevrolet Cast Iron Cylinder Heads. Thanks. Whether you're tearing up the track or embarking on a Jan 18, 2015 · Pretty much all your standard 454s are going to have a 4. The vane is really steep in the last 3/4" or so, about same angle as valve stem. Assembled with premium parts, the JEGS Vortec Head fits all 1955-Present GM small blocks except LT1, LT4, and LS1-style engines. I have already ordered the rocker studs to adapt to adjustable rockers. So, I have been reading up on the swap. I also found some comp cams with 115 and 116 LSA, from what I've read higher LSA is good for EFI tuning and a smooth idle, but will it have adverse affects on power? Nov 25, 2024 · Find many great new & used options and get the best deals for Big Block Chevy Heads 10114156 Vortec BBC Gen 5 7. It allegedly had under 20k miles, and was in storage for about 15 years. The cylinder heads are unique to the L29/L21, featuring small oval ports with a swirl inducing “ski Jul 7, 2003 · The benefit of this conversion is to use the tiny-chamber L-29 Vortec heads on all those old 8 to 1 compression pickup truck 454s. Nov 30, 2010 · I ran across a remanufactured Vortec 454 long block for sale today and thinking about using it instead of the '86 454 truck engine I have. 4L 454 Open Chamber Oval Ports at the best online prices at eBay! Free shipping for many products! Oct 31, 2020 · Greetings, Do any of you engine builders know of an factory equivalent-sized aluminum 100cc chamber aftermarket cylinder head to replace the 100cc chamber factory iron gen 6 ‘96-‘00 454 L29 Vortec engine’s heads? Username Post: Cylinder heads vortec 454 (Topic#34984); GRUMPYK3500 Senior Member Posts: 1350 Loc: Houston,Tx. 485" on head #2. Oct 19, 2013 · I picked up a 99 vortec 454 with the intentions of putting edelbrock RPM-O heads, intake, carb and so on. * casting # : 12560241 / 10141279 * Description : Stock Oval Port , Closed Chamber Vortec 7. Remanufactured. Introduced in 1996, it was produced for five years, until replaced by the Vortec 8100. Specifications: Feb 20, 2020 · I read an article in one of the hot-roddy magazines (Chevy High Performance, I think) about the Vortec 7. 5:1 compression with the stock l29 vortec heads, which are stock but have an adjustable valvetrain conversion and roller rockers. Condolences. Some people knowing Sep 26, 2007 · anything special i should know about before buying a 8. I purchased a good running 2000 GMC 3500 to use as a donor vehicle. The same deal as converting all the old small blocks to Vortec heads! These L-29 big block heads have the BIG oval ports, a modern heart-shaped 100 cc or so combustion chamber that would work great with flattops. Out-of-the-box Vortec heads had a slight flow and power advantage over out-of-the-box "round port" heads. I really want a 454 or 502 vortec but thats big bucks and I'm still in high school so I dont see that happening. or Best Offer. Opens in a new window or tab. Shouldn't have any problems with the block there. 25-inch bore as the 427, but with a longer 4. Suitable for towing, the Chevrolet Performance Big Block Chevy L29 Vortec Cast Iron Cylinder Head was used on 1996-2000 GM trucks/vans/SUVs with 7. Dec 20, 2005 · But, if someone wants a reliable, cost effective, torque motor, c/w streetable 9. 25 & 1. Re: 454 Vortec heads on older engine 01-22-03 06:14 PM - Post# 164389 In response to gearjam I believe they will bolt-onto the block, but the intake might not bolt-on the heads. However, on the 1996–2000 7. jly gbag azx sjdp eyspzmf tcbyfot idgji wlpgmu uivoeuxq yncwql