how much would headers help built engine?

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Sep 4, 2005 | 11:20 AM

pwrtrip75

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From: Janesville, WI

how much would headers help built engine?

I know they will help alot, but my freind still has manifolds and a ORY on his car with massively ported heads, 224/.581 cam, yank SS 3800, 4.11 gears.

track times. N/A- 2.0 60ft (street tires) 12.9 @ 107
N20-150 shot 2.0 60ft 12.2 @ 117

anyone roughly know how big of a difference headers would help? I know its lacking mph on the track times. any opinions on what it should be? or capable of?
thanks.

Sep 4, 2005 | 11:23 AM

conan

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From: Back in the Burg

I'd say 20rwhp with LT's, what catback does he have?

Sep 4, 2005 | 11:43 AM

pwrtrip75

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From: Janesville, WI

it is a custom 3" Y-pipe No cats, and a 3" over axle w/ a dynomax race magnum.

Sep 4, 2005 | 11:52 AM

Order 66

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I bet he can gain 40hp with a good set of headers. Dont know why he doesnt have them already.

Sep 4, 2005 | 12:15 PM

Crazy Man

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I went from ported stock manifolds no cats cutout To pacesetter LTS and true duals and a ls6 intake and gained 58rwhp

Sep 4, 2005 | 04:41 PM

WS6WRX

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Alot!

Sep 4, 2005 | 05:22 PM

CRL 01 SS

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He's leaving atleast 40 rwhp on the table considering he has that cam and ported heads. Tell him to get some LTs.

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Sep 5, 2005 | 12:22 AM

pwrtrip75

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From: Janesville, WI

When we put the car together headers wernt in the budget. When we were at the track i was wondering why it was so slow in the MPH area. I kinda figured all the head work and cam came to an abrupt stop when it hits the stock manifolds. I was just trying to get a ball park on how much it will make a difference so i can convince him to get a set.
Thanks.