Long tube headers for 392

[nevd1430]

OP, I have a set ordered. Will follow up once installed.

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[Old Jeeper]

OP, I have a set ordered. Will follow up once installed.

KOOL!

What is you objective in replacing you existing system. I ask, because headers have a significant effect on you torque curve. You can move torque up and down the curve by the design and length of the headers. Not going negative on you, just wondering about your objective.

I ran Bill Thomas headers, Hookers and some of my own fabs. I was looking to get more torque lower in the rpm band. I lost a lot of rpm on launch. Coming out of the hole at 6500-7000 rpm depending upon track, concrete vs asphalt. I made my 1-2 shift at 7200 rpm and my 2-3 at 7000. With the cam I ran I got peak torque at 5500 rpm and peak hp at 6800. Then you start playing with the lifters. I would run my intakes about .32 opening them up .02 and get just a a bit more duration on the intake side. Anyhow just having fun trying to dial in and max out.

Where do these headers come into play in your Jeep configuration?

 

[nevd1430]

Daily drivable focused. The Jeep has decent low end numbers but the stock manifolds seem to be the limiting factor in mid/high rpm range. You clearly are a more experienced engine builder than me, but I'll get some before and after numbers. Lifters are mopar SRT.

 

[guarnibl]

For that kind of money with the cat back and everything else underneath I'd need to custom build skid wise, I'm just saving for a 448, lol.

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