318 poly to la 360 in 63 belvedere

[Lee Prather]

I have a fresh built 360 that I want to put in my 63 Belvedere that has a polyblock
Are aftermarket motor mounts needed ?
Why are headers different on a 66 up than on a 65 down ?? Can 66 headers work ??

 

[Primer King]

My '63 Polara was originally a bigblock car, but somebody before me put a 318LA in it (still in there). Bigblock (361-383) mounts I believe are the same as Poly mounts?

The LA conversion mounts in mine look to me homemade (or atleast not aftermarket), but there probably is swap kits out there. I know for sure that 66-up k-members mount the engine about an inch further back than 62-65 k-members, that is atleast 1 reason why '66 headers won't fit 62-65. There might be other reasons, like the framerails spreading on 66-up instead of going straight back to the crossmember like 62-65 does.


Hope it helps.....

 

[joesnow]

I used spitfires. I regret that now. You could try magmun exhaust manifolds. Some headers fit say some people.I havent tryed others.