AFR 225, FAST 90-90 on 402, Dyno #'s
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W2W built the motor, which is built for nitrous. 402 iron block, Callies Racemaster crank, Howard rods, dome pistons. Cam is a 245-257 633-644 on a 114 ls. Stock LS1 Hyd lifters.
Heads are out of the box AFR 225, with the upgraded springs, and stock rockers. I had these heads flowed @ Livernois, and they flowed @ 324, very close to advertized #'s..
I had this done over a year ago, but ran into some unexpected health problems that sidelined me for most of the year last year. The car ran a 10.81 @ 126 150 60, on motor with a 3550 raceweight.
I had some tuning issues, and discovered that I had not put the right bolts on the intake valley cover, and when I removed the intake I discovered the small vacume line going to the intake, on the passenger side, was not connected, and I doubt that it fell off when I took the intake off. Anyway, I removed the intake and discovered oil around the ports. It was obviously not sealing properly, because of the improper valley cover bolts. I'm lucky that I did not crack the intake. This explained the foul smell when I hammered it.
With the intake off, I cleaned up the casting crap on the inside, and port matched the intake to the AFR 255's.
The #'s are through a T400, 12 bolt, custom chromemoly driveshaft, 28" (325) MT DR on the first dyno, and 30" (315) on this last dyno.
W2W Mustang dyno showed 415 HP @ 6300 RPM's, 367 TQ @ 4900 before I discovered the problems with the intake.
I just had a fresh tune and dyno done @ CARS in Waterford, MI. Where the new #'s are 459 HP @ 6500, 389 TQ @ 5300 with the AF set @ 12.7
I drove the car home 65 miles, and other then a few idle issues, the car feels great. New track times to come after I change out the seats, and put some padding on the new cage.
I think it would easily be a 500 to 525 HP RWHP car, in a 6 speed car.
Heads are out of the box AFR 225, with the upgraded springs, and stock rockers. I had these heads flowed @ Livernois, and they flowed @ 324, very close to advertized #'s..
I had this done over a year ago, but ran into some unexpected health problems that sidelined me for most of the year last year. The car ran a 10.81 @ 126 150 60, on motor with a 3550 raceweight.
I had some tuning issues, and discovered that I had not put the right bolts on the intake valley cover, and when I removed the intake I discovered the small vacume line going to the intake, on the passenger side, was not connected, and I doubt that it fell off when I took the intake off. Anyway, I removed the intake and discovered oil around the ports. It was obviously not sealing properly, because of the improper valley cover bolts. I'm lucky that I did not crack the intake. This explained the foul smell when I hammered it.
With the intake off, I cleaned up the casting crap on the inside, and port matched the intake to the AFR 255's.
The #'s are through a T400, 12 bolt, custom chromemoly driveshaft, 28" (325) MT DR on the first dyno, and 30" (315) on this last dyno.
W2W Mustang dyno showed 415 HP @ 6300 RPM's, 367 TQ @ 4900 before I discovered the problems with the intake.
I just had a fresh tune and dyno done @ CARS in Waterford, MI. Where the new #'s are 459 HP @ 6500, 389 TQ @ 5300 with the AF set @ 12.7
I drove the car home 65 miles, and other then a few idle issues, the car feels great. New track times to come after I change out the seats, and put some padding on the new cage.
I think it would easily be a 500 to 525 HP RWHP car, in a 6 speed car.
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Glad you're finally back in business and healthy again. ![Happy](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_stretch.gif)
I sure miss seeing you break ET records every weekend like you did a few years ago. Your new setup sounds lethal. Enjoy it.
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I sure miss seeing you break ET records every weekend like you did a few years ago. Your new setup sounds lethal. Enjoy it.
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2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2018 Cadillac Escalade 6.2L A10 Pat G tuned.
LS1,LS2,LS3,LS7,LT1 Custom Camshaft Specialist For custom camshaft help press here.
Custom LSX tuning in person or via email press here.
![](https://ls1tech.com/forums/signaturepics/sigpic210_1.gif)
2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2018 Cadillac Escalade 6.2L A10 Pat G tuned.
LS1,LS2,LS3,LS7,LT1 Custom Camshaft Specialist For custom camshaft help press here.
Custom LSX tuning in person or via email press here.
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Originally Posted by WHPLASH
I would throw it back on W2W's dyno to see the changes. Not a big fan of Seans work or facilities. Still, pretty stellar times.
No, I dont have a wideband on the car. I'm waiting until I get the nitrous put back on the car before installing that.
I drove it around for about 4 hours yesterday, with only high idle issues, that will be corrected. It certainly "feels" better, and snappier throughout the powerband. I'll update on the track times, when they come.
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A couple of runs on the back roads with the G-Tech, show a 132 MPH, where I let out of it before the end.
Depending on the accuracy, that would be an increase of my previous best of 127, and the 126 that I ran most of the day last year.
That would be about in line with the 1 MPH per 10 HP theory. Might be able to drop down to a 10.40 or 10.50 ET.
Depending on the accuracy, that would be an increase of my previous best of 127, and the 126 that I ran most of the day last year.
That would be about in line with the 1 MPH per 10 HP theory. Might be able to drop down to a 10.40 or 10.50 ET.