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None, the firebird formula 455 was built between 1971 and 1974. The formula was only avilable with the 400 and 350 from 1975 to 1979. According to the data displayed by yearone.com, there were 7528 Trans Am Coupes produced with 455's. All of these units were equipped with Manual transmissions. The rarest of the group is the 1976 Limited Edition 455 with T-tops.
The 0-60 time for a stock(455 CU-IN) 67 Firebird is 5.5 seconds No such thing as a stock 455 67 Firebird. 455 wasn't built until 1970.
702 formula 455's were built. No breakout from PHS as to how many were equipped with the optional functional ram air hood. I have a late '74 one (built 8/14/74), red/red, ram air, full gauges, formula wheel, posi, pw, ac, & added Honeycombs & a factory am/fm stereo.
there where 0 455HO built. The HO engines where only placed in the trans am. But Pontiac built in total 7802 formula's with 455 engines. 1860 manuel transmissions 5942 automatics This is incorrect. According to High Performance Pontiac Magazine February 1994 there were 166 Formula 455 HO's built with manual transmissions and 155 built with automatic transmissions. It is the rarest of the 71 Firebirds. I have one of the automatics (along with complete PHS documentation and window sticker showing the car being a 455 HO).
Unless I am sadly mistaken, Pontiac built zero. The 455HO (round port heads) were never made again after the 1972 model year. In 1973 and 1974 the Hi-Po 455 was the Super Duty which was offered in the Formula, but is very rare as a factory build. The late 70's "HO" used d-port heads. I currently own a '72 Formula, and have bought and sold several '70 - '72 Firebirds, Formulas, and Trans Ams stating over 30 years ago.
If it's a Pontiac 350......and it should be, it is a direct swap. You don't need to change ANYTHING. Pull the 350 out and put the 455 in.
I have a set from Mondello performance i would sell Check Ebay..
I'm sure you can. You would be better off with a 455 Pontiac. You can bore and stroke it to 468ci.
There is no "small block" , "big block" with Pontiac engines. The physical size is the same from 326ci to the 455.
I BELIEVE THAT IS THE SAME AS A 400 BLOCK . SO IT WOULD BE 5 QTS. mY 455 HOLDS 5.2 GIVE OR TAKE FOR FILTER INSTALL. HOPE THAT HELPS
The largest engine offered in a Pontiac Firebird was the 455 cubic inch (7.5L) V8 engine, which was available in the Firebird from 1971 to 1976. This big block engine produced up to 335 horsepower and was known for its potent performance.