1967 Pontiac Firebird Small Block Chevy to 455 Engine Swap
Posted 12 September 2010 - 05:00 PM
FYI, it was originally a 6 cylinder car. Thanks for the help!
Posted 12 September 2010 - 07:12 PM
Nice idea. Maybe Pete or Geno can share some ideas on the swap.
I believe that Pete has a 455 in his 1969 Firebird.
Get your motor runnin'. Head out on the highway
Lookin' for adventure. And whatever comes our way.
1978 Pontiac Trans Am
WS6 Equipped W72 Engine Pontiac 400
Complete rebuild bored .030 over Coded WC with 4-speed
Forged rods and pistons, 6X Heads
Hays performance clutch
Flowmaster 40 Series Mufflers
X-pipe 3 inch stainless dual exhaust
Hooker super competition
Ceramic coated long tube headers
Edelbrock Performer Series Carb 600 cfm
Taylor 8MM High Performance Spark Plug Wires
4 core heavy duty radiator
Heavy duty rear springs and shackles
Energy suspension bushings
Posted 24 September 2010 - 07:09 AM
Posted 19 April 2011 - 08:52 AM
I am new here, but I am almost completed with a very similar project. I started with a 67 that someone put a sbc and a th350 in. I pulled that setup as soon as I got the car. I now have a built 72 455 and a 66 tri power top that I am finally completed assembling. I ran into some clearance issues with that large setup as TimS mentioned. Since I was changing transmissions as well, I needed a new trans cross member. I also had to buy the real factory frame side engine mounts, as well as new pad type mounts for the engine side. I did have to modify the frame side mounts a bit in order to move the entire assembly slightly forward for tunnel clearance of the TH400 transmission. It was not a big deal (although I had to take out the body mount bolts on one side in order to remove the old cross member and install the new one). Also had exhaust clearance issues that I am working out right now (fabricating my own down pipes to work around the steering arm and motor mount on the drivers side, the passenger side is no problem). Had to get a new front yoke for the driveshaft (th350 to th400) and also looks like the shaft needs to be shortened by an inch or so (final measurement will be done very soon). Motor assembly actually was just completely installed last night after quite a bit of planning. In my case, it looks like the tri-power is going to have hood clearance problems as well (oh well, guess I get to fabricate an induction scoop for her :-). Still a couple of weeks from firing it up, but it has been a fun project so far. If there is anything that I may be able to help with, feel free to contact me. I have some photos if that would help. How is yours coming along?
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