3 1/2" versus 4" downpipe
Thread Starter
TECH Junkie
iTrader: (71)
Joined: Mar 2002
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From: East Brady, Pa
3 1/2" versus 4" downpipe I'm looking into some truck manifold setups and I can fit a 3 1/2" dp but can't do a 4" without swapping K members. I'm running a 408 w/S91. How big of a difference is the largers DP?
Thread Starter
TECH Junkie
iTrader: (71)
Joined: Mar 2002
Posts: 3,703
Likes: 0
From: East Brady, Pa
dunno....wrapped my headers which got rid of at least 50% underhood heat and it spools up my 88 fine. Since i have the old heavy garrett 88mm wheel....your 91mm prolly spool as fast or faster
