99slobird

iTrader: (1)

Ok I just thought about this When I bought my 12 bolt it had 4:30 gears in it and I took them out for 3:73 but I was also running a 4l60e now with the different ratio of the th350 maybe I should just stick the 4:30s back in it and see how it does. Because there isn't a whole lot of difference between a 4:30 and a 4:10 and it would save me 250 bucks on a new ring and pinion??? Thoughts..... Anybody? Lol

SuperSlow02

iTrader: (16)

If your runnin 8th only, prolly wouldnt hurt any since you have the gearset already. What's your rpm limit?

99slobird

iTrader: (1)

I try to shift around 6300 or 6400. Lane set my limiter at 6800 and on motor with the 3:73s when I went 7.30s I turned it a lil tight in second going through the trapps at 95mph and around 65-6600

EZZZE

iTrader: (14)

Is that eighth mile still open in Tuscumbia? I used to live up there and run at that little track. Somebody told me that David Crouch bought it.

99slobird

iTrader: (1)

He will have a race there occasionally but he didn't buy it. And yes it is still open. Cmon back down and run on that greasy track lol

99slobird

iTrader: (1)

Update at moulton drag way. I went 7.21 1.60 60ft @97 mph on the motor and 6.54 1.47 60ft @ 107 mph on spray. Nothing ha changed but I change pinion angle from -2 to -4. Went with a 10 inch rim instead of a 7, and put a msd 2 step on it. What do u guys think. I'm going to go with the 4.30 gears that I have already instead of the 3.73. The worst that could happen is it will slow it down but maybe I cam get it into the 30s on spray with them

BayAreaSS

iTrader: (10)

60ft on bottle looks better. I'm surprised you can't go 1.5's on motor. What tires are you running?Our 1/8th mile times are very close to each other. Your car is moving out though.

99slobird

iTrader: (1)

Im on 28 10.50 15 mt radials

N2RACINGLS1's

iTrader: (2)

This has already been said in previous post call FTI or ATI and get a new converter! Go ahead and install the 4.30 gears it will help! Leave the engine alone.

Good luck and have fun on your next outing!

N2

ZTwentyAteU

iTrader: (12)

Sounds like your converter is too tight. I run a PTC as well, but it works just fine, car only turns 500RPM more on nitrous than motor...you could always have them redo it.

I'd start with the gear and see what happens..3.73 to a 4.30 will help. I don't think 3.73-4.10 would do much of anything. You gota think about going from a stock height 26 to 28inch tire is killing your gear

bBody22

you going with the carb? or the F.A.S.T 4 barrell?

raymond mckinney

iTrader: (4)

My Cam only Ls3 went 7.0's on motor with a 3:42 gear and a fti 3800-4000 stall and 6.60's at 113mph only spraying 2nd testing the nitrous.

N2RACINGLS1's

iTrader: (2)

Same day race event 6.67 ET NA and 6.26 ET on 125 HP Nitrous run, 346 CI at 3,300 lb race weight! The one and only time I had the car on the dyno it put down 400 rear wheel HP.

I hope this helps!

N2

Fbodyjunkie06

iTrader: (10)

You need to change that 2800 stall to a 3600. I wouldn't go higher than 3600 since your on spray. Your motor 60' are low because you have not shot out of the hole with a 2800 converter and your current gears. A properly spec'd 3600 converter and spraying out the hole will immensely improve your 60' time.

I wouldn't worry about heads or a dedicated fuel cell until you get a new converter, then see if you need more help getting out the hole with lower gears. I think a new converter will solve all your problems and then help you gain some on top of that. Then go with a dedicated fuel cell and then heads.

thedudeZ

iTrader: (14)

Fast 4barrel

After some thinking the magnaflow oval 3in might have been a bottle neck when trying to spray more than a 100 shot. will have a cutout on it with the new motor.

thedudeZ

iTrader: (14)

BTW I went with PTC's recommendation and sprayed from a 7.8 on motor@87mph to 6.70's on a 100 shot but it never responded to more n20. Again my fault I don't think the ptc converter was an issue but it was PIG **** tight on motor. 1.7 60ft down to 1.3's and 1.4's. flashed around 3000 on motor and 4200-4400 on a little jug. PTC said I need to hit it with more bottle to get it out of the hole harder.

ProTreeRacing

iTrader: (4)

Yeah id try a new converter first, similar setup we went 6.9@100 on motor and on a 100 shot went a 6.3@109

99slobird

iTrader: (1)

Ok I put the 4:30s back in and here are the results
4:30s
Motor - 1.65 60ft 7.17et @ 97mph
Spray - 1.57 60ft 6.60et @ 107mph

3:73s
Motor - 1.60 60ft 7.21et @ 96ish mph
Spray - 1.47 60ft 6.54et @ 106 mph



Ok to all you gooroos this doesn't make any sence to me, can any of you give your advice on this. I think I'm going to go back with the 3:73s for hooking purposes and consistency and I know I need a bigger stall converter but I'm not going to do that unroll I get my 250 shot ready . Btw I understand why the 60ft was slow and that was because the car was spinning bout 10 ft out but why would the mph be higher with the lower gears and if it picked up on motor why didn't it pick up on spray?

WheelsUp84z

iTrader: (14)

When you spin you will normally trap higher. Weather conditions may have had some to do with et. Even though you 60ft worse you still et'd better, which tells me that te 4.30 has more in it. What kind of shocks are you running?

99slobird

iTrader: (1)

New stock shocks front and rear, soft rear springs (not sure the brand). Spohn body mounted ta (-4 degree pinion angle) spohn adj lca with relocation brackets in bottom hole, subframe connectors and pa racing k member