360 Advice Needed - Autocross / Street Engine Build

Kicker92 said
I've been running similar numbers in CamQuest, and it looks like in these flow rates, the manifolds are costing like 40-50 lb*ft across most the rpm range.

@ AutoXcuda, how do you have any ground clearance left with it low and the headers underneath? Even the TTI's look like they hang down low compared to the rest of the car.

Shortie headers with a factory looking heat shield may be my next best option.
Again, it doesn't need to be OEM mopar, but my goal is that is look like it "could" have come from a factory like that.
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A bit of a different type sleeper build... :)

TTI long tubes only hang down about 3/8" more compared to Doug's long tubes, which are about as tight to the car as they can be. The Doug's only hang down a bit less than 3/8" more compared to the TTI shorties. I was surprised that the shorty headers weren't a larger improvement in ground clearance, but they weren't. I think the TTI long tubes would only be about 5/8" or so lower than the TTI shorties, less than 3/4" for sure. I mean, that's not nothing, but, unless your car is absolutely slammed on the ground you probably don't need it. Here's a write up of the TTI shorty install I did, and why I switched back to the Doug's. My "new" '74 Duster- or why I need a project like a hole in the head

The other thing is, unless you have really short tires, you run out of suspension travel before the clearance on the exhaust becomes a real problem. I run 1.12" torsion bars on my car with tubular QA1 LCA's that added a bit of travel before they hit the bumpstops, and then lowered the car until it occasionally hits my low profile polyurethane bumpstops on the street. And my header flanges are still almost 4" off the ground, which is plenty even on the street. I ran my Challenger around for awhile at only 3.5" to the flanges, but that required some creative parking lot exercises when speed bumps were involved. I raised it back up to 3.75" to the flanges and it was fine. The other thing is that with the 25.6" tall tires I run and the amount of suspension travel I still have left the tops of the tires get VERY close the the inner fenders at full compression. I'd have to raise the inner fenders to go much lower than I am with the tire heights I have, when I measured from the spindle to the inner fender at full compression I only came up with 13", so, with a 26" tall tire I would be close to interference at full compression.

I know autoxcuda was running tires that were like 24" tall, so his car is really low, so if he can get away with it almost anyone can. Probably a pain for a daily driver like mine, but for a car that sees more track than street it would be fine.