350 Rocket to a 455
#1
350 Rocket to a 455
Hello,
I am interested in swapping a 455 into my 68 Cutlass S. I am interested in finding a thread I saw regarding the details of this swap. Can someone help me with a link....the multiple searches haven't yielded me a very desciptive thread. Thanks! John
I am interested in swapping a 455 into my 68 Cutlass S. I am interested in finding a thread I saw regarding the details of this swap. Can someone help me with a link....the multiple searches haven't yielded me a very desciptive thread. Thanks! John
#3
You will need the correct A-body exhaust manifolds or headers. The 350 manifolds will bolt up but will be overly restrictive. They also will not put the exhaust flanges in the right place if you want to run a stock-type exhaust system.
#4
350 to 455 swap
I believe you will need to ad a spacer to the powersteerig pump bracket, as I recall from my last swap that bracket is a two piece unit, there is a bolt that hods them together, remove that bolt and then bolt the upper section to the head and the lower section to the block, cut a piece of tubing tith the same I.D. as the bolt to fill the void.
Scott
Scott
#6
The way I understood it was that the older 350 brackets had holes for both the small and big block engines. I know the 307 brackets do not have the holes and maybe the newer 350 brackets dont either, but I am not sure.
#7
I believe you will need to ad a spacer to the powersteerig pump bracket, as I recall from my last swap that bracket is a two piece unit, there is a bolt that hods them together, remove that bolt and then bolt the upper section to the head and the lower section to the block, cut a piece of tubing tith the same I.D. as the bolt to fill the void.
Scott
Scott
#9
[quote=joe_padavano;57054]All 1965-1980 brackets will bit both big and small blocks (there was no big block in 1964).
Joe,
Gee, odd I did not know that brackets bit. I have to be careful the next time I mess with them. How many teeth do the have anyway
Joe,
Gee, odd I did not know that brackets bit. I have to be careful the next time I mess with them. How many teeth do the have anyway
#10
[QUOTE=citcapp;57062]Enough teeth to bite my knuckles every time I get close...
#11
Great stuff, thank you. I replaced the radiator earlier this year, along with front springs (along with ball joints and control arm bushings). The car seems to sit on the high side a bit. Do you think I will get away with the radiator (new, but maybe a little undersized) and the currently installed springs?
#13
If its a 4 core the you should be fine. But a 3 core might run hot. What trans do you have? If its the th350 be easy on it. Stock th350s dont like abuse from a BB. Trust me ive been down that road to many times.
#14
The turbo 350 is custom built. The trans guy I used very experienced at race car transmissions and put what he calls "personal touches" on it in addition to a basic shift kit. It shifts very crisply and he feels it will hold up to a big block. If it was a stock, vanilla 350, then I would tend to agree with you.
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