700r4 Question
Thread Starter
Drifting
Joined: May 2004
Posts: 1,258
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From: Huntsville Alabama
700r4 Question
Ok Im looking into getting a 700r4 to replace my turbo 400. Well I was talking with a buddy of mine and he said I need to becareful because of my cam with the overdrive tranny. My question is will a 700r4 be alright with a year one crate motor. The cam specs are as follows 218/228 @ .050 and .520 lift for in/ex. I know i will need a electric stall so would a 2200 be alright. Is the cam too big to have an overdrive transmission with a 3.08 rear gear. Sorry for such a dumb question but I know nothing about transmissions.
Le Mans Master
Joined: Oct 2001
Posts: 6,798
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From: Pine Bluff Arkansas
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15-'16-'17-'18-‘19-'20-'21
Ok Im looking into getting a 700r4 to replace my turbo 400. Well I was talking with a buddy of mine and he said I need to becareful because of my cam with the overdrive tranny. My question is will a 700r4 be alright with a year one crate motor. The cam specs are as follows 218/228 @ .050 and .520 lift for in/ex. I know i will need a electric stall so would a 2200 be alright. Is the cam too big to have an overdrive transmission with a 3.08 rear gear. Sorry for such a dumb question but I know nothing about transmissions.
Larry
Team Owner
Joined: Apr 1999
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From: Reno Nevada
2024 C3 of the Year Finalist- Modified
That is a very mild cam and motor. It might work with a 3.08. I used a manually switched lockup. Some vendors have the wiring for brake release and lockup control. They also sell the correct cross member.
I originally had a 3.55 rear gear when I first installed my 700R4. Also because of the lockup function there is really no need to run a low stall converter. So you can have the best of both worlds.
I originally had a 3.55 rear gear when I first installed my 700R4. Also because of the lockup function there is really no need to run a low stall converter. So you can have the best of both worlds.
Burning Brakes
Joined: Sep 2006
Posts: 1,071
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From: Rotonda FL
220 degrees intale (@.050") is the usual dividing line cam suppliers use when recommending a higher stall converter. I suggest you check the Comp Cams or Crane's catelogs to confirm. The 700 R4 is a good choice with a 3.08 rear end. It is similar to the 3.07 performance rear end (the highest ratio offered by GM) in the C4 Corvette with the 700R4. The low first geat in the 700R4 will combine with the 3.08 to give lively street performance.
