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-   -   what trans should i use?? (http://www.hotrodders.com/forum/what-trans-should-i-use-224446.html)

the82elco 09-27-2012 08:19 PM

what trans should i use??
 
ok i have a sbc 350 bore 40 over with a comp magnum 280h cam & 323 gears in the rear end. right now i have a th350 trans in my car with a 2200-2800 stall. should i keep the th350 or should i use the 700r4 i picked up :confused:

SSedan64 09-27-2012 08:32 PM

A 200-4R would be a better choice.
You'll need a different Crossmember & the Frame Extension but, can use the same Driveshaft. The 84-88 Montes/ElCos came with 2004Rs so finding the Crossmember & Shifter, Cable & Bracket is easy. Summit sells the Extension or you can make one.
Transmission Swap Tech

the82elco 09-27-2012 08:36 PM

[QUOTE=SSedan64;1594496]A 200-4R would be a better choice.
You'll need a different Crossmember & the Frame Extension but, can use the same Driveshaft. The 84-88 Montes/ElCos came with 2004Rs so finding the Crossmember & Shifter, Cable & Bracket is easy. Summit sells the Extension or you can make one.
Transmission Swap Tech[/QU
im stuck with these 2 transmissions >>th350 or700r4<<<

SSedan64 09-27-2012 09:18 PM

Driveshaft will need to be shortened about 3" if the TH350 has 6" Tailhousing..
Need the TV Cable & Bracketry, TC Lockup kit etc.. lots of Info on here.

The 700R4 has a lower 3.06 1st gear compared to the TH350's 2.52 1st. So that will help launch/takeoff.
The 700R4's 1st to 2nd gear shift has a big drop tho' 3.06 to 1.62 ratio.
.70 4th/OD will drop the 3.23 gear down to 2.26 ratio.


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