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Turbo 350 Tranny Build Recipe???

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My boss's kid has a pickup 76 chev 1/2 ton 2wd that he races in the highschool drags. His tranny is pretty weak and my boss wants me to biuld him one that will handle 400hp or so. I have rebiult several 350 trannys but they have all been stock biulds. Does anyone have a recipe for parts to put in it so it will be street / strip friendly and handle a small block between 300-400 hp.

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Maybe I need to change my title to TRANSGOD!! Just messing with ya.

First off, I have some questions:

1. Daily driver or weekend fun only?

2. True horsepower rating? Dyno numbers? (everyone I build a transmission for has a 400hp SBC, but in reality they are much less)

3. Engine specs? Cam specs? Stroker?

4. Does he want auto or stick shift? Reverse manual pattern?

And that should just about do it.

Answer those questions to the best of your ability and I will give you a list.

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Maybe I need to change my title to TRANSGOD!! Just messing with ya.

First off, I have some questions:

1. Daily driver or weekend fun only?

2. True horsepower rating? Dyno numbers? (everyone I build a transmission for has a 400hp SBC, but in reality they are much less)

3. Engine specs? Cam specs? Stroker?

4. Does he want auto or stick shift? Reverse manual pattern?

And that should just about do it.

Answer those questions to the best of your ability and I will give you a list.

1. Daily Driver

2. i would say it is closer to 300 or it will be...i will be biulding a 383 to put in it.

3. Stroker..not sure on the cam

4. Shifter is on the colom still and i believe he will want to keep it functioning and shifting ranges like it is.

This truck is the kid's daily driver that he can go to the track once in a while and have fun

Thanks for the help.

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Ok, so here is what I would recommend:

Borg warner clutch kit

Seal Kit (I prefer to use the kit with Teflon sealing rings)

Transgo HD 1&2 kit, go with the orange spring

New bushings and thrust washers.

700 Wide low roller support. Hand sand the inner race with a 45 degree cross hatch.

Get the endplay around .025 to .030

Forward clutch clearance .025, or as close as you can get it.

Direct clutch clearance: I like to keep it around .050 or so

Hand sand the outer roller clutch race on the direct drum, use a drum with a roller clutch, not a sprag.

Get a good converter to match the cam. I like the T400 vette converter for a stocker, it is around 2000 to 2200 stall usually. \

Keep an eye on the accumulator bore in the side of the case, they tend to get worn. If needed, hone the inside with a small cylinder bore hone and replace the accumulator. The teflon style sealing rings do a good job with sealing up slightly worn or out of round bores.

Optional: Get a governor weight and spring kit. This is time consuming, but allows you to fine tune all the shifts points.

I think that's about it. I just did basically the same trans and finished it this morning.

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