Peanut Port Drag Test

[HP HUNTER]

Originally Posted by Robert Simpson

HP the car sounds and runs good. I have a couple questions about the cylinder heads.
What drew you to this style head? Vs a 049 style oval port?
Did you have to replace the exhaust seats? Hardened?
How much do you think you increased the volume when finished?
Did you have to fill the intake manifold to match, or was it close?
Do you think there would be any problem using this style head or the 90's version on a tow truck 496CI combination, and if so what cam and intake?

Last is that Scott Welborns old car?

Thanks for your interest.

Thank you and keep up the great work it really looks good.

1.What drew you to this style head?
I was running out of 781 and 049 castings in my engine building buisiness.

2.Did you have to replace the exhaust seats?
No, on muscle car builds I do not replace seats, but I'am a fanatic on round strait properly sized and finished valve guides which lets me make a very concentric seat with a extremely nice contact patch that transfers heat good due to the valve setting down on the seat perfect every time. Tow applications get a 1.750 CHE exhaust seat.

3.How much do you think you increased the volume when finished?
I don't know I didn't check it, I machined, built, dyno tested, installed it in 7 days.

4. Did you have to fill the intake manifold to match, or was it close?
No, I smoothed the plenum divider, the intake is not the cork.

5. I have built tow engines close to this, this engine would be good in my dualie, except the 9.3 comp would worry me along with the 1.880 exhaust valve size. I will put a link up to my 489 tow build along with a picture.
http://speedtalk.com/forum/viewtopic...447590#p447590

6. Last is that Scott Welborns old car?
Yes, I bought it from Dale Hulquist the BSer, when it arrived I realized it would need a total rebuild from front to back, and thats what it got.