Exhaust question

doodguy · Apr 21, 2017

I'm debating buying the cams. Doubt they will make 1k horsepower difference.

I've contacted whipple and they told me I'm over spinning blower and that's why it's not making more power.

TooSoonJunior · Apr 21, 2017

Here is your timing curve (Rpm along the bottom, timing on the left)

Jay-rod427 · Apr 21, 2017

doodguy said:
I'm debating buying the cams. Doubt they will make 1k horsepower difference.

I've contacted whipple and they told me I'm over spinning blower and that's why it's not making more power.

Exactly. Overspinning taxes its efficiency.

Dntalman · Apr 22, 2017

Massage the ports on your heads especially the exhaust side. Your step headers are not hurting you.. You will need to go with 2" headers to make a difference with a header change.. Keep the headers gets some electric cut outs and port the heads.. You can put cams in it and make more power. You can also gain a little with just valve springs... You will gain 70 to 100 extra with a head work, cams, and springs.

doodguy · Apr 22, 2017

Dntalman said:
Massage the ports on your heads especially the exhaust side. Your step headers are not hurting you.. You will need to go with 2" headers to make a difference with a header change.. Keep the headers gets some electric cut outs and port the heads.. You can put cams in it and make more power. You can also gain a little with just valve springs... You will gain 70 to 100 extra with a head work, cams, and springs.

Thanks! I have 90lb springs already. You think cut outs will help? Any particular brand people like?

Exhaust question

doodguy

Well-Known Member

TooSoonJunior

Well-Known Member

Jay-rod427

Well-Known Member

Dntalman

Black Top Brawler

doodguy

Well-Known Member