Hey guys, A while back Ryan asked if i'd get on here and maybe do a tech on something i have knowledge on. I don't consider myself an authority on this but i do come from a long Pontiac background ,have done lots of research,was President of a local chapter of the Pontiac Oakland Club International (POCI) ,and have had the pleasure to rub shoulders with legends like Jim Wangers, Jess Tyree,the Anderson Bros. , Pete McCarthy,and Arnie "The Farmer" Beswick. A little background, In 1966 My Uncle bought a brand new GTO,In 1967 (When i was 1 year old) my parents went to the dealership and traded in a 59 Bonny rag top for a New GTO. It was equipped with a 400 HO,Th 400,3.55 posi. The second year my oldest uncle went to that same dealership and bought a new 68 GTO equipped with hideaway lights,400 HO,4 speed,3.90 posi rear. So, by January 68 all three brothers were running around northern Virginia in Muscle Pontiacs. I grew up hearing about the stories of them street racing all over the place. My dad shutting down a 440 Plymouth GTX,then getting shut down by a 67 Vette 427. My oldest uncle getting a huge ticket while racing a Studebaker Avanti on the Pennsylvania Parkway, my other uncle racing his GTO against a Ford GT Torino next to a Virginia military base, only to have the MP's block the road ,have my uncle arrested,his car towed,and his license taken away for 2 months. These are just some of the many stories i grew up listening to, and the reason my dad and i got in to Pontiacs in the early 1980's. By 1984 i had a 66 GTO , dad had a 67 GTO,my mom had a 64 GTO,my then girlfriend had a 64 GTO. My every day driver 66 GTO had a warmed over 11:1 400 with Tri power,Ram Air III heads,Ram Air IV cam, TH 400 with a 3200 stall,12 bolt rear with 4.11 posi. It was full interior/full bodied 3400 LB car and at Riverside Raceway would hit 12.80's at 115 MPH. Later on i got in to Tri 5 Pontiacs,Chevies,& Fords,then after that came pre war Fords. The following are a few things from memory , some follow up research,and some things i've learned from Jess Tyree & the Anderson Bros. Rocky , feel free to chime in here and add whatever you'd like. Hope some of you enjoy this. The overhead valve engines were produced from 1955-1979 until Pontiac went "corporate". 1955 - 287 c.i. 2bbl, 4bbl. 1956 - 316 c.i. 2bbl,4bbl, & dual quad. 1957 - 347 c.i. 2bbl,4bbl,Tri Power, and Fuel Injection. 1958 - 370 c.i. 2bbl,4bbl,Tri Power, and Fuel Injection. 1959 - 389 c.i. 2bbl,4bbl,Tri Power. 1960 - 389 c.i. 2bbl,4bbl,Tri Power. 1961 - 195 , 389 & 421 c.i. 2bbl,4bbl,Tri Power,and Dual Quad. 1962 - 195 , 389 & 421 c.i. 2bbl,4bbl,Tri Power,and dual quad. 1963 - 195, 326,389, & 421 c.i. , 2bbl,4bbl,Tri Power,& dual quad. 1964 - 326,389,& 421 c.i., 2bbl,4bbl,Tri Power. 1965 - 326,389,& 421 c.i. , 2bbl,4bbl,& Tri Power. 1966 - OHC 6,326,389, & 421 c.i.,2bbl,4bbl, & Tri Power. 1967 - OHC 6,326,389, & 428 c.i., 2bbl,4bbl,. 1968 - OHC 6,350,389, & 428 c.i. , 2bbl,4bbl, . 1969 - 350,400,& 428 c.i. , 2bbl,4bbl. 1970 - 350,400,& 455 c.i. , 2bbl,4bbl. 1971 - 350,400,& 455 c.i. , 2bbl,4bbl. 1972 - 350,400,& 455 c.i. , 2bbl,4bbl. 1973 - 350,400,& 455 c.i. , 2bbl,4bbl. 1974 - 350,400,& 455 c.i. , 2bbl,4bbl. 1975-1979 engines like the 350,400,& 455 c.i. , 2bbl,4bbl. were produced but were very restricted due to smog emmisions. Low compression,small valve,low combustion chamber,small cfm carburetors,etc were the norm. * Most horsepower ratings that you read in books were extremely underated for insurance purposes, especially in the 1960's & early 70's. *all 1958-1962 V8 engines have forged rods. * 1955-1960 shares one "staggered" intake bolt pattern. * 1961-1964 shares one "staggered" intake bolt pattern. * 1965 -1979 shares one "straight through" intake bolt pattern. *External dimensions are the same on all V8 engines. * Heads will interchange on all Pontiac blocks. * All 1955-1979 valve covers interchange - despite what you read elsewhere! * All distributors interchange - despite what you read elsewhere! (The exception being Ram Air V ) * All manual transmissions from 1955-1959 were 3 speed. * 1960 was the first year that the 4 speed T-10 transmissions was placed in Pontiacs the factory. * 1955 & 1956 valve covers have stainless rivetted plates mounted on top that read " PONTIAC strato streak" * 1957 valve covers are the only year that have "P O N T I A C" embossed on them in typical 50's script lettering. 2bbl engines did not come equipped with them - only 4 bbl,Tri Power,and Fuel Injection engines. * Firing order on all Pontiac V8's is the same as SBC 18436572. * Automatic transmissions started out with Hydromatics then went to "jetaways" . Some cars have been found to have Buick Dynaflows. This was due to the "Plant fire" that occured in the mid 50's. * 1966 Tri Power were the only intakes to use the Larger 2GC carbs all the way across. 1965 and earlier used the larger 2GC carbs on the outside and smaller 2GC in the middle. * Most 1969 on up Pontiac engines have the cubic inches embossed on the driver side of the block....example 350 - 400 - 428 - 455 *In 1967 GM banned multiple carburetion on all intermediate sized cars. (So, if someone is selling a 67 GTO and claims it has "factory Tri Power" its B.S.) * In 1964 GM pulled out of factory sponsored race cars. Any GM drag cars you saw from 1964 on up was independent. * SUPER DUTY PROGRAM* Late 1961 - 1963. The only cars used were Tempests , Catalina's, and a few Grand Prix's. Late 61 - Aluminum bumpers (front & rear) were offered. 1962 - Aluminum bumpers,hood,fenders,inner fenders,deck lid,radiator support. 1963 - First year of the "Swiss Cheese" frames. Aluminum bumpers,hood,fenders,inner fenders,deck lid,radiator support. *1957 - 1964 GP,Bonneville,Catalina,2+2,Star Cheif,etc used the "Big Car Rear ends" . like the Oldsmobiles, most 57 & 58 units have 28 spline, & 59-64 units were normally 31 spline. *Pontiac V8 engine numbers - Are located on the passenger side front of the block - just below where the head is mounted. * Date Codes. Found on Intakes,blocks, some heads,etc. normally have "flathead" screw driver marks at each end of them. The first letter is the month,the second and/or third set of numbers are for the day, and the last number is for the year. In other words, if you see something like F/10/4 It would translate to: June 10th, 1964 . * If you ever find a Pontiac part and it is missing one of the last part numbers it means that Mickey Thompson had permission from Pontiac to manufacture it and delete one of the last numbers. * HEADS TO KEEP AN EYE OUT FOR - AS THEY ARE PERFORMANCE HEADS* CAST # 540306 (1961-62 389 & 421 hi po & SD) CAST # 544127 (1962-63 389 & 421 hi po & SD) CAST # 9771980 (1963 389 & 421 hi po & SD) CAST # 9770716 ( 1964 389 & 421 hi po & SD) CAST # 75 & 76 (1965 389 & 421 hi po & SD) CAST # 092 & 093 (1966 389 & 421 hi po & SD) CAST # 670 (1967 400 & 428 Hi po heads) CAST # 16 , 62, 96 (1968 400 & 428 Hi po heads) CAST # 62, 48, 722 ( 1969 Hi po/Ram Air heads) CAST # 12,13,614,64,& 96 (1970 Hi po / Ram Air heads) CAST # 96,66,197, (1971 Hi po/Ram Air heads) CAST # 7K3,7M5,7F6, (1972 Hi po/HO heads) CAST # 4X,46,16 (1973-74 HI PO,HO,SD heads) Pontiac sources: CPR California Pontiac Restorations - Santa Ana, Ca. Edelbrock Offenhauser Brad at fabcraft - Southlake,TX Ames - Marlborough,Nh Empire motors - El Paso,Tx Kauffman Racing Equipment - Tennessee - For the serious Pontiac drag racer - 6-11 second cars! Pacific Performance Racing - San Pedro ,Ca - Great people to deal with ! Franks Pontiac parts - Ramona,Ca. (760)-789-0669 Butlers Performance- Leoma, Tn - Another respected Pontiac Performance shop! Well, there ya go guys. This took me 2 hours to write up. If i've helped at least one person become more knowledgeable with Pontiac engines,or helped someone with a Pontiac source then my time writing this up has been well spent. I could of went a lot more thorough but what i wrote is the main stuff to help out. Enjoy and happy holidays ! Axle R.I.P. Mickey Thompson !