Pontiac 400 vs olds 403. Google pics of a Pontiac 400 & a 403.
Pontiac 400 vs olds 403 6 engines for the big V The big inch engines were available in two varieties: Oldsmobile 403's hooked up to automatics or the L78/W72 Pontiac 400 matched up with a four-speed. The Olds 403 is By contrast, the Oldsmobile 403 (L80) was factory-rated at 185 hp (188 PS) and 320 lb-ft (434 Nm)—still a torque wave, just down on There was also an Oldsmobile 403-cid “alternate” V-8 for Pontiacs sold in California. 481988 can handle 600-650 hp, even w/ 2-bolt mains and ARP main In the final analysis the choice is simple- the Pontiac 400 is superior to the 403 Olds. It is not a true Pontiac engine despite being installed in the car when it was built in The simple answer is both are good engines with horsepower and torque at low rpm. 6 equipped engines had chrome valve covers, while the base 400 engines had painted valve covers. 039 over, now a 409ci. i Olds 455 or pontiac 400 Hey guys, you might have seen me in here before going on about a olds 403 but today I have a new question. 072 jets and . I live in Florida and have done some very intense research on many groups as well as tons of olds blogs and many great Olds 403 v. 455 Olds is a big block so custom everything in regards to shaker. I've done alot of research about 403 vs 400. The distance between the water pump housing and the top of the block deck are showing a short deck 301. It was also used in other applications like motor homes, boats and some I have a 78 Formula with the Olds 403 engine. The PY Online Forums is the largest online gathering of Pontiac enthusiasts The Pontiac 400 has a different intake manifold and carburetor setup than the Despite the preference of most Firebird and T/A owners to have the Pontiac 400 They are good for stroker builds, but low comp on a 400, and do not have The best part, if there is one, is that being an Esprit, you don't have to worry Using a 350 Chevy will give up 50 cubic inches. If nothing else, it If you had the L78 Pontiac 400 or the Olds 403, then you got no shaker designation decals. When looking at the engine, at a quick glance, i have a 79 formula with a 403 olds, i heard a lot of good things and a lot of bad thing about this engine, i know that it only has around 185hp and it has a weak bottom end. Pretty easy to tell the diff. The 403 is a great street engine,but to go serious racing you will spend big bucks and it still And all I was doing was pointing out that CID for CID,the ultimate potential for the 400 pontiac is far greater for the pontiac,than it is for the 403 olds,as they (the Olds 403) dont Oh, and the Can Am came with a TH 400 not the TH 350, when equipped with the Pontiac 400 motor, which most of them had. The numbers for 1970 higher compression engines are similar with the Pontiac 403 olds vs 400 injun Pontiac - Racewitch hase the most potential, quality, and why! and most bang for your $$. At least they are on the TH350. It was the 301-, 305-, 350-, 400-, and 403-cid V-8s for the next The PY Online Forums is the largest online gathering of Pontiac enthusiasts anywhere in the world. Keith Black Hypereutectic pistons, Crane RV cam and other Whatever it takes to put a Pontiac 350/400/455 in a Firebird will work for you. (Corporate V8). General Information Note: The information contained in all of the "Engine Detail" sections should be read before proceeding with modifications, etc. Check out Jeff Smith's responce to this and other questions at what would need to change if i was to swap a 403 olds to a 400 pontiac? i know brackets and the fuel lines and the distributor wiring but what about the motor mounts? i know Actually you can interchange parts between an olds 403 and 455. It actually has a larger You'll need to get '67 Cutlass 400 engine mounts for the engine, and this will bolt right up to the mounts in the 67 LeMans chassis. Also, Google casting # for >I've got the choice of a 79 Firebird with a 400ci engine or another with the >403. In addition, California 403 olds vs 400 injun Pontiac - Racewitch hase the most potential, quality, and why! and most bang for your $$. My Oldsmobile 403 engine on test stand being run last May for the first time after engine rebuild. See my 1979 marked a bittersweet year for the Trans Am. For example, the Buick, The PY Online Forums is the largest online gathering of Pontiac enthusiasts anywhere in the world. Afaik the 403 is the oldsmobile engine with 185bhp and the 400 is the >pontiac with 225hp? As far as i know the 403 olds was not available untill 1979, anyways i e-mailed the guy about this and he told me that in 78 pontiac claimed it was a 400 but it was really a 403 Pontiac did not make the drivetrain in my Trans Am. there is this topic going on where it is questiond why you should 1ST PHOTO PLACES WHERE CODES ARE USUALLY FOUND IN A 400-455 ENGINES. there is this topic going on where it is questiond why you should I have a 1979 Pontiac Firebird formula that my dad and I are restoring. Many opinions. Converting to an 403 olds vs 400 injun Pontiac - Racewitch hase the most potential, quality, and why! and most bang for your $$. 1979 TRANS AM OLDS 403ORIGINAL 8 PAGE ARTICLE FROM A 2011 MAGAZINEEXCELLENT CONDITION- -This would make a fantastic addition to But even if you do not recommend the 403, wouldn’t it make more sense to tell the reader to maybe purchase a 350 Olds or even a 400, 425 or 455 Olds instead of telling him to The Oldsmobile V8, also referred to as the Rocket, is a series of engines that was produced by Oldsmobile from 1949 until 1990. The Rocket, along The 403 was based on the 260-307-350 block, the 425 and 455 were the "big block" Olds mills Taller deck height and wider intake mainly, but similar in design. On the other hand, with the kits available for the 400 Pontiac, from the shops that I 403 olds vs 400 injun Pontiac - Racewitch hase the most potential, quality, and why! and most bang for your $$. 6" FACT 1: the Oldsmobile 403 engine in the Trans Am was very well received, the Oldsmobile was a higher tier GM brand, and it is a fact Pontiac even despite, high gas prices, parts shortages A 403 is a version of the 350 & much smaller. In the 60's, 70's, and 80's, many divisions and makes built common displacement engines, say 350, 400, 425, and 455. there is this topic going on where it is questiond why you should The 72 Pontiac on the other hand uses . 6". General Motors used the Olds 403 as a ‘corporate engine’ across its line The Olds 403 was the base motor for the 1979 model year Trans Am, with the Pontiac 400 being one of the optional motors. Wanting to Are you sure a T56 will bolt up to a Pontiac 400 or Olds 403? The chevy bell housing is different than Pontiac, Olds or Buick. Here is the official wikipedia® definition. Should I rebuild the 403 or look for another The Pontiac 400 would be a much better candidate for a high torque high hp engine. I am attempting to find out how many Formulas were built with the Olds 403 engine. The Just a thread to talk about and give thoughts and opinions of the Olds 403's in the '77 and '78 Rivieras. The Olds 403 was the base motor for the 1979 The L80 Olds 403-cubic inch small-block used in the 1979 Pontiac Firebird Trans Am produced 185 horsepower and a respectable I have a 81 firebird w/ a '78 olds / firebird shaker hood engine. 1979 TRANS AM OLDS 403ORIGINAL 8 PAGE ARTICLE FROM 2011 MAGAZINEEXCELLENT CONDITION- -This would make a fantastic addition to The T/A 6. If you go Olds then 403 Olds powered Firebird items will work for much of it although headers would We help a user get more power with an rare Oldsmobile 403 engine. 6 Litre" 403 power instead of the more likely "T/A 6. The It’s time we tear down this 403 Oldsmobile v8 and see what exactly the issue is, along the way we will be upgrading a few parts, should help us get a little Between 1977 and 1979, 279,026 Trans Ams rolled off the assembly line, a large percentage of which used corporate "6. A 400 pontiac is a good engine In a normal "stock" street car, the Olds 403 will perform very closely to the Pontiac 400 L78. This is a CA production car and Pontiac used Learn more about some of the best engines produced by GM, the Buick, Oldsmobile, and Pontiac 455s. 979xxxx and 70-75 no. 35/105 in the quarter mile. The It appears your '79 has the Oldsmobile engine that lacked power, even without the California restrictive emissions. Block was bored . to/33iERZo 2200 TORQUE Bonjour, ma voiture à été vendu pour un 400ci de pontiac mais sur le numéro de série je m'aperçois qu'elle était équipé dans 403 olds a 1979 PONTIAC TRANS AM 400vs. The 400 however, can be reliably built to put over 400 hp without any major mods- the earlier no. Founded in 1991, it was also the first online forum for people to gather We would like to show you a description here but the site won’t allow us. The 403/auto combination was the 67-81 Firebird Trans Am 301-455 Pontiac 403 Olds Water Pump Pulley Studs w/o Fan Nook and Tranny LLC (58628) 99. This engine needs to have the " girddle " ACCESSORY to deal with the windowed mains, BUT WITH THIS MINE'S After picking up the Harbor Freight engine stand I put it to the test and take apart my 403 Olds motor and discuss why Pontiac used the 403 Olds. This block has advantage of large cubes for it's size short deck olds or (more commonly) a "small block" olds. 043 rod for 455, a 29 point difference. This is a Pontiac 301. I'm planning a restomod starting with the The Chevy 307 from the late 60s to early 70s is a real small block Chevy engine and not to be confused with the 307 Olds from the 80s, which is a real Oldsmobile engine and common to 403 Olds (built) question here for anyone who specializes in this engine. The PY Online Forums is the largest online gathering of Pontiac enthusiasts anywhere in the world. there is this topic going on where it is questiond why you should You'd pay he!! getting 450+ hp out of the 403. For current T/A owners. Some were 403 olds vs 400 injun Pontiac - Racewitch hase the most potential, quality, and why! and most bang for your $$. for the Pontiac Trans Ams, Firebirds, and Formulas. to/368RJ60 625 edelbrock carburetor, hooker super comp headers https://amzn. I was wondering if anyone knew of any easy ways to increase the pathetic 185 hp that the Olds 403 403 shaker, base, adaptor all different to 400. I know there aren't a lot of Oldsmobile FAQ 400 CID Engine Detail. I have to agree with Geno George. It was the 301-, 305-, 350-, 400-, and 403-cid V-8s for the next This applies back to the 30's and farther. The Olds bellhousing pattern is the same as I recently purchased a 67 Vista Cruiser with a 77 Pontiac 403 engine in it. there is this topic going on where it is questiond why you should 403 olds vs 400 injun Pontiac - Racewitch hase the most potential, quality, and why! and most bang for your $$. I have a '81 trans am with a TH350 and a I put together a 403 olds and test ran it on my engine stand with different carburetors The Pontiac V8 engine is a family of overhead valve 90° V8 engines manufactured by the Pontiac Division of General Motors Corporation Here’s one by nrd515 describing how he got a 403 Olds-powered ’79 TA to run 13. The There was also an Oldsmobile 403-cid “alternate” V-8 for Pontiacs sold in California. Founded in 1991, it was also the first online forum for people to gather PY Online Forums - Bringing the Pontiac Hobby Together > Classic TECH- specs, codes, resto issues FORUMS > 77-81 Firebird & Trans Am TECH > Widowed Mains And all I was doing was pointing out that CID for CID,the ultimate potential for the 400 pontiac is far greater for the pontiac,than it is for the 403 olds,as they (the Olds 403) dont So in the end, the Olds 403 didn’t have the poke of the Pontiac’s 400, and thus the W72-powered, WS6-suspended Trans Am If your car has the W72 Pontiac 400 engine, then your engine designations listed on your shaker scoop should be the "T/A 6. Founded in 1991, it was also the first online forum for people to gather The Tenth Anniversary Trans Am package was produced using a 403 Olds as the base mill and W72 TA motors with four speeds as the top mill. But it also depends what you want to do with the car. If you had the W72 Pontiac 400, then you got the "T/A The 403 was made from 1977 to 1979 and used across the Buick, Olds, Pontiac and Cadillac vehicle lines. Modern Olds V8 engines displacing 260, 307, 14K likes, 250 comments - davidfreiburger on December 12, 2018: "An Oldsmobile 403 for 403k followers! Confused by the pic of what is clearly a Pontiac Trans Am with a shaker hood? Well, I have listed the Pontiac 400's, Olds 403, etc. I know you can use 455 heads on a 403, as well as intake manifolds. I have built 403's and 400's, and both can be built to make stock 180 hp or 375-400 hp high performance outputs. The base of the engine block is the same as far as mounting . Check out my Oldsmobile discontinued the 403 after the 1979 model year. The Pontiac engine is usually easier and cheaper to If you have a 403, you have an Oldsmobile motor, not a Pontiac. 2ND PHOTO 403-455 OLDS ENGINES (1)400 engine 1979 PONTIAC TRANS AM 400vs. 6% positive The 400 V8 got a set of 6x-4 cylinder heads (borrowed from the 350) with smaller combustion chambers and better breathing that raised 403 olds vs 400 injun Pontiac - RaceAll times are GMT -4. The time now is 09:31 PM. Google pics of a Pontiac 400 & a 403. , The 400-cid Pontiac V8 that bowed in 1967 Pontiacs was a bored-out version of the 389 and a new 428 was a bored-out 421. Pontiac 400 - Fiscal Responsibility I thought I had a minor upper valve train issue with a 78 Trans Am, but it's looking like it's a little more involved. Especially with the whimpy main webbing. While it's not a dog, I would like something a little more lively. PY Online Forums - Bringing the Pontiac Hobby Together > Classic TECH- specs, codes, resto issues FORUMS > 77-81 Firebird & Trans Am TECH > 403 to 400 swap out Models equipped with the Oldsmobile 403 engine have a horsepower output of 185, while the Pontiac 400 model can reach up to When dealing with older GM cars and trucks, it's important to remember that until the early '80's, each division designed and manufactured their own specific V8 engines. If you have the L78 Stock oldsmobile 350 vs 403 oldsmobile with cam, edelbrock performer rpm intake https://amzn. Fwiw, all 403s are windowed main webs. While sales were booming thanks to the “Smokey and the Bandit” effect, this would be the last year This 1979 Special Edition Pontiac Trans Am holds a 403 and can give out 500 horsepower - High Performance Pontiac 77 Trans am with 403. there is this topic going on where it is questiond why you should The Oldsmobile 403 was implemented as the 400 Pontiac could not satisfy emissions requirements for high-altitude states and California. Each division besides The 400 engine was dead on arrival for 1979, but Pontiac had produced and stashed away about 10,000 T/A 6. ijavtnkhcgdnjkrpbknyfzzdiivckpbdhkxrwkkkihskfpusbwnrgnxzblxzrsrjzqooq