nice price. Doesn't matter what year, just a bolt hole missing when you put it on a Gen3 engine, no biggie. Maybe you got lucky and found one that has the lower 1st gear setup similar to the ones they put in motorcoaches.
nice price. Doesn't matter what year, just a bolt hole missing when you put it on a Gen3 engine, no biggie. Maybe you got lucky and found one that has the lower 1st gear setup similar to the ones they put in motorcoaches.
See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709
Get a custom converter made to bolt to the Gen3 engine. Its nice not to have to buy a crank spacer, flat flexplate and longer bolts to mount up early style. 1st one I did was with the spacer/flexplate. 2nd one Precision Industries built the converter to boltup to the Gen3 dished flexplate with recessed pilot.
See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709
well how do i find out if it does have that lower 1st gear? still going later to check it out, ill post pic so you can see the trans....Originally Posted by RedHeartbeat
doesnt have some sort of number stamped on the trans so i can tell ????
99' Ext Cab 5.3l Soon to be sleeper!!!
I have no idea how to tell them apart unless they're torn down.
See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709
i guess ill just buy and then just figured it out later when i have it rebuild...
too cheap to pass up!
99' Ext Cab 5.3l Soon to be sleeper!!!
Or if your putting it in as is, do the math with a gear ratio calculator and see what speed your going in 1st at what RPM and then you will know.
i dont have a gear ratio calculatorlol... but ill be doing a rebuild master kit on it before i install it and a shift kit also...
99' Ext Cab 5.3l Soon to be sleeper!!!
all you need is a regular calculator
engine rpm ÷ (speed [mph] x 12 x 5280 ÷ 60 ÷ tire circumference [in inches] x rear diff ratio)
my truck, for example...
10mph x 12 x 5280 ÷ 60 ÷ 99.43in x 3.73 rear = 396.15
1600rpm in first gear ÷ 396.15 = 4.04
my first gear is actually 4.02, but that formula gets you pretty close seeing as how you're approximating speed & rpm
Last edited by zebra; 08-29-2009 at 02:46 AM.
00 FRC - just top end, exhaust, and a hot-air intake
99 Sierra - 5.3 / 5spd
↓ click the pic for the build ↓
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