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Username Post: LS3 and 350 turbo trans        (Topic#361909)
Senior Member
Posts: 449

Loc: Bella Vista, AR
Reg: 01-19-01
07-26-20 12:21 PM - Post#2799601    

I'm putting a LS3 into my '71 Monte. Plan on keeping the 350 trans. Don't want a computer controlled trans. Any reasons not to keep the 350 trans? Tks, ejw71

60 El Camino 400/350 3.36
71 Monte Carlo 350/350 2.73 my favorite
16 Corvette 460 hp. None of my 60s era drag cars ever went this fast


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Posts: 15784

Loc: Baltimore, MD
Reg: 11-27-04
07-27-20 06:36 PM - Post#2799701    
    In response to ejw71

If you don’t want a computer controlled transmission, I would suggest you at least step up to a 700-R4 or 200-4R. You’ll get the benefit of overdrive and only need to hook up a switch to lock the converter in overdrive. There are several different ways to accomplish that. The only other thing you will need is to move the trans crossmember, hook up a throttle valve cable and shorten the driveshaft. The 700-R4 takes the same yoke as the TH350. Not sure about the 200. I have a 700-R4 in my ‘78 El Camino and I love it. I have 3.50:1 gears and a 29 inch tall rear tire and at 70 mph my rpm’s are just under 2,000.

Friends don’t let friends drive Fords.

1999 Silverado Z71 4X4 extra-cab short bed
1983 Malibu Fauxmad - tubbed
1978 El Camino Kustomized
1972 Monte Carlo
1957 210 handyman wagon
1957 Nomad sport wagon
1957 Cameo Carrier


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