Any new updates?

 

Finally got my junk to the track. Ran a 9.60 letting out a little before the marker. Got a 370 with F1A @ 16psi.

 

No go right ahead! I actually have a c5 z06 with a p1sc now.. I ran 11.9@124 with a 2.1 60ft. With a set of mt's I think I could knock .6 or better off my et and gain a few mph trap speed.

That's damn good et! What mph?

 

Only 136 because I hit the brakes before the marker. So prolly would have been closer to 150. Should run a lot faster once I can it to launch @ 5k with the 2 step..

 

Anyone have any updates they can add to this list? Bob

 

Earlier this summer on 15 deg of timming My setup in sig went 10.5 @ 131mph full weight with all options as it came factory with. Cut a 1.71 60' on 1st run since tuned and haven't been back yet.

 

Bump this up.. Seems like 9.06 is time to beat with F1a?

 

Okay so its been like 4 yrs since ive raced. Went through a bunch of upgrades and now have a mwc fab9 , aster bracket with cbm 8.65 crank and a 3.7 procharger pulley . sd tuned running about 12 lbs at 6500.

still stock cam and heads , aftermarket pushrods, valve springs , ls9 headgaskets , and arp headstuds . Water meth . bbk longtubes , no cats to 3.5 catback with 18inch bullet muffler after the axle .

Got 6 runs at a track rental yesterday and i left the car just as i drove it to work and how it always is.

Ran on nitto 555g2 and got a best of 11.73 @ 125.6 . The car dynod at 620hp 570 tq . The car with me in it weighs 3860. The car no driver is 3565 . Doesnt that seem high for a formula . Must be the procharger and ford 9 added over 100 lbs.

But just wanted to update this . If you spin a p1sc-1 high enough you can make power . I attribute this to the aster bracket and the large crank pulley , i think i could pulley down to a 3.5 and be at 65000 rpms . but its so good im gonna clean up under the hood this winter.

Just happy to have a stock heads and cam ls1 making 125 traps.

 

You're doing very well banging gears with the stock heads and cam! Bob

 

KP ran a 8.92 with an F-1A and my cam some years ago. Bob

 

Cool setup. Ive always been a fan of a simple motor and letting the blower do the work. 620rwhp sounds about right but you should be trapping way higher than 125. 600rwhp in a 3800 Fbody should be 131-132mph and mid 10s (if you hook)

I sold my 408 and Im looking at building basically what you have, except in a LS2 (stock cam, heads & intake, forged pistons, stock rods) and running a D1SC

 

I used an online calculator and with the car weighing 3850 and trapping 125 it said I should make 620 hp. That's right where my Dyno sheets indicate. I also Have 3.50 gears in my fab 9

 

I may also think 620rwhp would trap a bit higher. But... I doubt it was easy to get out of the hole with the 3.50 gears. Also it doesn't look optimized for the track. What were the 60' times & what rpm are you going through the traps? 1/8 mph?

I say nice job.

 

Is your 620hp at the crank or wheels?
I assumed it was wheels since that's what 99.99999% of the people on this site measure their power from.

Below are real world results from 600 RWHP procharged cars at full weight 3800lbs. All trapping 130+
The bottom thread is a stock LS1 with the exception of a LS6 cam, Turbo pushing 12psi, mid 10s @ 130 at my local track.

take a look at the JRENIGAR that posted above you. 6.0, D1SC, 602rwhp full weight, traps 131.


https://ls1tech.com/forums/drag-raci...-60-stock.html

https://ls1tech.com/forums/drag-raci...n-dragway.html

https://ls1tech.com/forums/forced-in...30-new-pb.html

 

Stick cars won't mph if the traction or 60 ft is bad enough. I've picked up over 10mph from a tire and 2 step by dropping the 60ft from 2.0 to 1.5.

 

620 is Wheel from the Dyno I was tuned at. Yeah my car isn't optimized for drag racing. I didn't even lover air pressure in tires. Matter of fact I haven't checked it in 2 months. I drove it like I drive it around and raced it the same way.

I made 6 runs and was getting better with the launch but the best 60 ft was a 2.0. I needed more practice but I had fun and got 125 traps which I wanted so I left before sosomething broke.

I think the 3.50 gears hurt and having a stock cam. Most guys have gone to a larger cam which I'm sure helps lower in the power band.

I have no idea on the rpms going through the traps. My father asked me tthe same thing and I had no clue.

 

Some good results here, keen too see some more as I will be buying a procharger very soon.

 

George Toll has been high 7s in the 1/4. F1a-94. Lsx real street t/a.

 

I'll have some results early next year as the new toy is getting a D1SC. Need to quite being lazy and start the install and make a build thread already.

 

Congratulations to George Toll for completely dominating the NMCA / Chevrolet Performance Series Real Street class at the recent event in Indy! Toll claimed the #1 qualifier position, re-set the E.T. and MPH class records with a 7.678 @ 181.81 run, and took home the win!

LSX / NMCA Series Atlanta, GA
George Toll
ProCharger F-1A-94 supercharger
Real Street

https://www.procharger.com/blog/summ...charged-racers

Bob