Another one. Exhausted

[blackve76]

be wary of these headers as my mechanic has tried fitting these on a few cars and they dont line up very well and he had to go through a few sets from gmm to get a set that lined up, could have been a fluke but still be wary

been on my car for 18 months, fitted well(I fitted) only issue was couldn't get dipstick(got a flexable one)

 

[daves8]

I have a set of the REX headers on mine too....

Seemed to fit up ok.....

 

[panhead]

been on my car for 18 months, fitted well(I fitted) only issue was couldn't get dipstick(got a flexable one)

Did you port match them?




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[blackve76]

Did you port match them?




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No
I have 1 7/8 pacemakers on my VE head/cam combo and the heads even then are ported but no were near the size of header pipe.

Its interesting that exhaust port isn't round aswell

 

[426Cuda]

No
I have 1 7/8 pacemakers on my VE head/cam combo and the heads even then are ported but no were near the size of header pipe.

Its interesting that exhaust port isn't round aswell

That's interesting. Was the output likely to be restricted by the flow of the stock L77/L98 heads? Which are already very good. Or were you chasing compression larger valves etc?
What power & torque does it make?

 

[blackve76]

That's interesting. Was the output likely to be restricted by the flow of the stock L77/L98 heads? Which are already very good. Or were you chasing compression larger valves etc?
What power & torque does it make?

I was chasing max N/a power from a 6L at the time high comp around 12.5 to 1(E85), made 358rwkws

with stupid photobucket lost most of my pics, this is only one of ported heads I can find before I fitted them(cant see the exhaust port grr)

 

[426Cuda]

I was chasing max N/a power from a 6L at the time high comp around 12.5 to 1(E85), made 358rwkws
View attachment 196085

with stupid photobucket lost most of my pics, this is only one of ported heads I can find before I fitted them(cant see the exhaust port grr)

View attachment 196086

Nice!

 

[panhead]

No
I have 1 7/8 pacemakers on my VE head/cam combo and the heads even then are ported but no were near the size of header pipe.

Its interesting that exhaust port isn't round aswell

Are you talking about the header pipes are round but the exhaust ports from the heads are a bit flat at the bottom?



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[blackve76]

Are you talking about the header pipes are round but the exhaust ports from the heads are a bit flat at the bottom?



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Yes.

 

[panhead]

Yes.

Gotta ya.

I agree there’s nothing to gain there for a street car unless you are chasing that last fraction of unattainable horsepower.




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