This car I am looking at has a ZZ4 backed by a TH-350 w/2800 stall and a 3.73 rear. I was wondering if this trans has an overdrive? Does anybody know what the gear ratio's are for this trans? Givin that combo above, will this be ok for a car driven on the street?

Thanks

 

There's no overdrive in the TH350...

Clem

 

People have been driving cars like that for years... I've had a few (late 70s Z28s for example) that came exactly like that from the factory, 350/350/3.73, except of course not with the stall converter....

------------------
"So many Mustangs, so little time..."
ICON Motorsports

 

ok well thats good to hear.

So is a 2800 stall to much for the street? And the guy says it is a true 2800 stall, what does he mean by that?

Thanks

 

It means theroretically if you had a transbrake, you could lock the tranny and go to WOT and the engine wouldn't climb higher than 2800 rpm.

Stall speed that's advertised on a converter is only an estimated number. True stall speed varies from car to car depending on how much torque the engine puts out. That converter may stall at 2800 on an engine that puts out 400 pounds of torque but only stall at 2200 on an engine with 300 pounds of torque.

------------------
Follow my racing progress on Stephen's racing page
and check out the race car

87 IROC-Z SuperPro ET Bracket Race Car
461 naturally aspirated Big Block

Best ET on a time slip: 11.242 altitude corrected to 10.89
Best MPH on a time slip: 121.52 altitude corrected to 125.89
Altitude corrected rear wheel HP: 497.9
Best 60 foot: 1.546

Racing at 3500 feet elevation but most race days it's over 5000 feet density altitude!
Member of the Calgary Drag Racing Association

87 IROC bracket car, 91 454SS daily driver, 95 Homebuilt Harley

 

TH350 gear ratios:

1st- 2.52
2nd- 1.52
3rd- 1.00
Rev- something like 2.96 (like it really matters)