What is needed to build a 7 second (1/8th) street car

crackedback said
The MPH is weak. No way it's making close to 450hp. More like 375ish. 450 at 3400# should be almost 10mph faster in the 1/8

Look at fuel system (where lots of in-car lack of performance issues are rooted) and timing as well. If you can jet it up and it doesn't change the MPH, you likely have a delivery issue.

Shift point doesn't sound bad if it's got a decent duration roller in it.

340's like gear and lots of converter. If this is a race oriented piece, with a 340, I'd have a 4500+ converter. The 3800 may work ok hitting juice of the line.

With a 28" tire, I'd have a minimum of 4.56's in it. Hitting it with 150 shot, maybe 3.91 or 4.10's especially if you a smacking it on the hit.

Unfortunately right now, the chassis/converter is VERY inefficient.

Car has 3/8 pick up tube and fuel line w a Holley high volume mechanical fuel pump. I dont want to use the NOS. It is a 10.2:1 motor. Did dyno 448 5 years ago, carb has been played with and changed multiple time since. has 75Lbs oil pressure and no smoking, runs 175 degrees. Fun car do drive on the street, but not meeting its full potential. ill keep tweeking fuel timing and traction. Taking sway bar off, installing slant 6 tortion bars a good place to start?? The barry grant 850 and 2 " carb spacer that it was dynoed with are long gone. May be a good 20 HP loss there.