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Old 06-03-2010, 11:54 PM
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700R4 parts question

I know engines but auto transmissions scare the chit out of me.....so for my '32 Victoria build I located a 700R4 out of a '90 Chevy van and took it to the only guy I know that REALLY knows his stuff about these things. He just retired after 41 years at a Chevy dealership and has been building street rod 350 ,400 and 700R4's at his home for a long time.

I didn't want a race trans. just a good dependable unit that shifts fairly firm but not a neck breaker....so this is what he wrote down that he did. 10 vane pump.....H.D. output carrier...H.D. 2-4 band...Kevlar 2-4 clutches...Corvette servo 2-4...H.D. springs 1-2-3-4 accumulator and a rebuilt by "his guy" 4.3 V-6 1800 stall conv. has a #7 stamped all the way around the shell. Anywho do these parts look like they will work ok for my application.

Also while I'm thinking of it, Bowtie transmissions say that you should use a pressure gauge (which they sell) when setting your TV cable adjustment and Phoenix transmissions say it's not necessary. Whats the real scoop on that, Thanks for any good info

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Old 06-06-2010, 07:06 AM
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Quote:
Originally Posted by 327NUT
I know engines but auto transmissions scare the chit out of me.....so for my '32 Victoria build I located a 700R4 out of a '90 Chevy van and took it to the only guy I know that REALLY knows his stuff about these things. He just retired after 41 years at a Chevy dealership and has been building street rod 350 ,400 and 700R4's at his home for a long time.

I didn't want a race trans. just a good dependable unit that shifts fairly firm but not a neck breaker....so this is what he wrote down that he did. 10 vane pump.....H.D. output carrier...H.D. 2-4 band...Kevlar 2-4 clutches...Corvette servo 2-4...H.D. springs 1-2-3-4 accumulator and a rebuilt by "his guy" 4.3 V-6 1800 stall conv. has a #7 stamped all the way around the shell. Anywho do these parts look like they will work ok for my application.

Also while I'm thinking of it, Bowtie transmissions say that you should use a pressure gauge (which they sell) when setting your TV cable adjustment and Phoenix transmissions say it's not necessary. Whats the real scoop on that, Thanks for any good info

10 vane pump would be in the 1990 trans

HD 2-4 band... what width?

Corvette servo = common item

Kevlar 2-4 clutches ? A Typo perhaps? If you mean 3-4 clutches , do not use kevlar there. Use a Raybestos Z pak or ALto red pack of similar design.

HD rear carrier = I guess he means a new Corvette style carrier?

A .500 diameter boost valve would be good or a .471. The trans would have a .421 in it.

A TransGo JR shift kit would be a suggestion.. use their accumilator springs

I suggest a "Beast" drive shell
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Old 06-06-2010, 11:57 AM
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Ok...finally an answer, Crosley I respect your knowledge and have read a lot of your reply's for other members. I still have a few questions to your reply....What width should the 2-4 band be?....yes it was a typo on my part, it was 3-4 clutches, why not kevlar there?....and why not the GM hvy. duty accum 1-2-3-4 springs? Are the others that much better. Also I asked him about the "Beast" shell and he said for my power level it just wasn't needed. I really do appreciate your info...Dave
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Old 06-06-2010, 01:59 PM
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usually one of the guys here respond with a proper parts list, so i stay quiet


actually i do not like kevlar in anything cept maybe a flak jacket. Same for Kolene steels, save your money, use regular steels

A OEM width band with hi energy material will work well.. these are used in 4l60e by GM, very common band on the market. I prefer new bands , not relined

I like the beast shell, it is the only part I have not seen fail in the 4l60 line of trans. At your power level I agree, un-needed,, your decision on that

I also prefer the 3-4 extra release springs with mods... usually the springs are collapsed . Sonnax offers replacement springs now.

Use the GM acculilator springs if you like.

Install a stiffer line bias valve spring or at least a check ball under the OEM line bias spring wither or not you use a larger boost valve....

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Old 06-06-2010, 03:31 PM
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The "Beast" sun shell runs $40-$45, this part in a 700R4 is considered by many to be a "weak link" in a 700R4,cheap insurance? OH YEAH!
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