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Yessa · 04-27-2020, 10:00 AM

I think the Z/28 stock manifolds move exhaust freely. Boring or porting out the Manifolds is a good idea to save money. Maybe 1/2 hp but seat of the pants maybe more.

04-27-2020, 10:00 AM	#18
Yessa Account Suspended Drives: 2015 Camaro Z/28 Join Date: May 2019 Location: FLORIDA Posts: 222	I think the Z/28 stock manifolds move exhaust freely. Boring or porting out the Manifolds is a good idea to save money. Maybe 1/2 hp but seat of the pants maybe more.