What size headers for SBC 383
#1
Member
MASTER JOURNEYMAN
Thread Starter
Join Date: Jan 2007
Posts: 36
What size headers for SBC 383
Our engine is near complete, it is a SBC 383 and should make at least 550 hp. It is 12.5:1 compression, Victor jr intake, roller cam with 0.6 inch lift, 292 duration. Brodix Racerite heads.
I have an old set of 1 5/8" headers, what size do you think is best for this engine? Thanks for your help.
I have an old set of 1 5/8" headers, what size do you think is best for this engine? Thanks for your help.
#3
Senior Member
RACING JUNKIE
Join Date: Jan 2006
Location: La.
Posts: 2,890
Absolutely 1 7/8" hookers with 3 1/2 collector. i'm putting 2" on my Sonoma 406" and i'm buying a 2 1/8" weld up kit with 4" cpllector when the 434 goes in my Malibu this winter. I'm now running 1 7/8" on the 377" motor that's in the Malibu.
The 406" motor has the same lift cam as you have with flat top pistons.
Zip.
The 406" motor has the same lift cam as you have with flat top pistons.
Zip.