1 5/8 primaries with supercharger
#1
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1 5/8 primaries with supercharger
im in the middle of a ls1 swap and purchased some long tube headers made specific for my application. they are doug thorleys 3/8 flange with 1 5/8 primaries into 3 in collectors. will they be good enough for forced induction? or should i try to sell them and do a single turbo with truck manifolds. gonna run 6-8 psi either way stock bottom end with a mild blower cam. thanks
#2
They would be OK for your boost levels, but would start limiting you if you expect to turn up the boost later. If it were me, knowing that I like to plan for growth, I'd start out with 1 7/8" unless you really mean to keep to 6-8psi max. If you do, then I'd go 1 3/4".
Jim
Jim