JRENIGAR

iTrader: (37)

Well, Im not dissapointed but not thrilled with the results either. The combo made 556/504 with the converter unlocked on a dynojet this past Tuesday @ Dyno Speed Racing in Memphis, TN. With a copycat 8 rib SCDE setup and a 7.65"/4.5" pulley setup it made 11#'s @ 6500rpm. The cam sounds good and is fairly choppy @ idle. The converter feels much better for street driving compared to my old Yank ss3600 in the 4l60 trans. Im trying to figure out what psi to run the 315/35/17 Mt ET street 2's @ on the street with some highway driving. I originally tried 35psi as they were set at from having them mounted and it could easily spin them through 2nd into D from a 10mph roll. When I get the takeoff nailed down I will head to the track. BTW I will post the dyno sheet when I can get them to email it to me. LMK your thoughts on the setup and what it did.

UPDATE!!! I went to the track last night in Memphis, TN and my best ET was 10.95 @ 126.5mph with a 1.716 60'. I figured the DA to be about 1788ft @ roughly 9:00PM when the run was made. The 1/8th mile time was 7.080 @ 101.74mph The scales were not working so I wasnt able to weigh the car. I will say it has every nut and bolt on it that GM originally put in it plus some. The car is alot heavier than stock with the added weight of the 4l80 trans, conversion cross member, BMR tubular adj torque arm, LQ4 iron block with the procharger kit and me @ 180#'s. Im guessing it weighed 3800-3900# race weight with almost 7/8 tank of gas, my work clothes and boots, the laptop and some other crap in the back.

Thoughts???

ramairetransam

iTrader: (18)

crank up the boost to 15 lbs and run some water meth and you will be over 600 .

Rise of the Phoenix

iTrader: (27)

Those results aren't bad. You can always up the boost if you want more.

JRENIGAR

iTrader: (37)

Funny you say that, the 4.0 pulley I originally had on there made 14.5# @ 6500 but I run out of injector. I wasnt planning on that much boost just for safety sake. I have been doing this swap since early November. Id hate to blow the engine and be down for the summer.

JRENIGAR

iTrader: (37)

True. The dyno guy said dont look @ the #'s because of the unlocked stall. I asked him what it should do. He said with a mild 60ft it should go high 10's for sure.

conan

iTrader: (5)

Good to see you finally got her up and running.
I wouldn't stress too much about the #'s the 4l80e and unlocked converter isn't a good recipe for big dyno #'s. Get the traction problems ironed out and see how she runs.

JRENIGAR

iTrader: (37)

Thanks for all your help with it.

Right in the middle of the build We decided to sell our old house and buy a new one that had alot of work to do on the inside. Between remodeling a house and ironing out little issues with the car (especially with the custom procharger SCDE copycat tensioner) Im due some seat time in the car.

Im curious what psi I should be running around on the street with? Then what to try @ the track?

conan

iTrader: (5)

Moving will definitely slow the progress on the car. I run my Nitto 555r 315/35/17 at 22 psi on the street with out any tire issues. 1st gear will break the tires loose around the 4k mark and 2nd gear holds pretty well. This is a 6 speed car by the way. The tire places always fill them up too full, try dropping 10-15 psi out and see how she does.

JRENIGAR

iTrader: (37)

Will do. Now if it would stop raining.

30th t/a

iTrader: (51)

nice numbers for only 11psi through the 80e.

Just for reference, I made 603rwhp through my 4L80e (2nd gear pull) with 14psi. 347cid, 8.7:1CR LS6 cam, Twin 57mm. pump 93.

JRENIGAR

iTrader: (37)

Thanks.

I wonder how the 2nd gear pull affected the #'s vs a 3rd gear pull?

Detoxx03

iTrader: (14)

Not bad. Pulley down and throw some 100% meth on it with a alky control kit.

30th t/a

iTrader: (51)

From what I was told, 2nd gear will show lower numbers than 3rd gear.
Im not sure if it has to do with the gear ratios or what. 2nd gear will always have a final "steeper" gear than 3rd gear. Kinda like how 4:10s will dyno lower than 3:42s.

JRENIGAR

iTrader: (37)

thanks. the tuner suggested an alky control kit. They recommended using 100% meth and dual nozzles. Im kinda scared of running 14.5lbs on a stock engine that Im not wanting to change out soon.

JRENIGAR

iTrader: (37)

Makes sense.

11SECSS

iTrader: (199)

nice setup and numbers, I'm sure that 80 is eating up some HP. I run my nitttos at 17-18 psi at the track still have to leave soft but gets 1.55 60 ft so far.Did you ever get a copy of your dyno sheet ?

JRENIGAR

iTrader: (37)

I did but cant get it to post up...

JRENIGAR

iTrader: (37)

Track times added to the original post...

11SECSS

iTrader: (199)

Nice run ...

heres my dyno sheet and a time slip for you to compare but my car weights 3450ish compared to your 3900 plus I still have a LS1 w/4l60e but we both have close to same power

JRENIGAR

iTrader: (37)

The old power to weight ratio has never been more clear than now. I was only stalling it up to about 2200 in hopes of avoiding 10 bolt carnage. I almost wish I would have left the 4.0" pulley on it and just added meth but in order to really take advantage of the extra power I need a different rearend.