A thread on SD 455 that is being restored:
SD 455
The head is round port.
Looks like this:
There is a 1 and a 6 on middle ports.
The distributor will be different compared to normal distributors.
The hole it goes into is a lot bigger. Probably can't tell installed though. It has a code on it that will tell.
The below the back of the passenger head on the block is a casting number that will ID the SD block also.
Pictures will help tremendously.
Sounds like an awesome car, though.
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John Wallace - johnta1
Pontiac Power RULES !!!
www.wallaceracing.com
Winner of Top Class at Pontiac Nationals, 2004 Cordova
Winner of Quick 16 At Ames 2004 Pontiac Tripower Nats
KRE's MR-1 - 1st 5 second Pontiac block ever!
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