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Old 03-28-2010, 07:29 PM
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Drivetrain For 383 Stroker?

I hope someone can help here, I have a 69 camaro with a 10 bolt rear end with 4:10 gears. I also have a T5 (5 speed) transmission out of my 91 camaro that was custom installed into the 69. The motor I am running is a 350 with "some" balls, but not the power I am looking for. I ONLY drive this car on the street once a week or every two weeks, so it is just a fun car. I do not ever intend on drag racing this car.

So my question is this, I want to build a 450 Hp or so 383 stroker. Can I get away with this with the current drivetrain I have supporting it? I dont really want to put in a new rear or trans in the car....but if I had to, what rear and or trans would you suggest. Ideally I could just build the stroker and drop it in and run it respectfully. I really do not have the money to replace the whole drivertrain at this time. Any thoughts from you hot rod techs out there would be very much appreciated!

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Old 03-28-2010, 07:59 PM
richard stewart 3rd's Avatar
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Hi,
Welcome to HotRodders.com Glad to have you with us.

Your rear & trans should be fine, with what your doing I doubt
you'll have any problems.
Rich
PS First gen rears were a little stronger then later years.
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Old 03-28-2010, 08:06 PM
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The rear will be fine as long as you never use drag tires, but if you make the power you are after and get rambunctious with that T5 it will tear it up. This is not a terribly strong trans, there is a reason why GM never put one behind a 350, only the 305. Too much torque will break it, the torque of a 383 is even harder on it. Drive it like a gentleman and it will last a while, but power or speed shift it much and it will peel teeth off the gears.

Tremec TKO would be the way to go if you can afford it.
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Old 03-28-2010, 08:25 PM
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thank you guys very much for the info. Sounds like the rear should be fine but I need to research the trans a little more.

Can anyone answer this? I currently have the 4:10 gears and have to shift extrememly quickly from first to second and second to third because it revs so fast, what gear would you suggest? I still want that "pin you to the seat" feeling, but want to get more out of first and second gears. if I go with a 383 stroker what gear ratio would you go with

thanks again

ben
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Old 03-28-2010, 08:28 PM
richard stewart 3rd's Avatar
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What ericnova said is correct, I was taking you word it wouldn't
be used for drag racing, just an occasional romp.
Rich
I like 3:73s
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Old 03-28-2010, 08:51 PM
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The deep 4.10 gear you have now actually helps take load off the trans, going to a lower rear gear like 3.73 or 3.42 will lower the revs but put more pressure on the trans gears, so you will have to decide "what to trade for what" for yourself.

If you went Tremec you could pick one with a better gear spread, with a 1st gear starting around 2.6-2.9 ratio. IIRC the GM T5 is 3.35 in 1st gear (but someone correct me if I am wrong it might be around 2.95ish).
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Old 03-28-2010, 09:06 PM
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EXCELLENT EXPLANATION! I am considering the TREMEC, Found a new TKO 500 for around $2,100, however, I am not sure if it will bolt up in place of my T5 or if it would have to be another "custom" installation. That could get expensive as well. I guess I just need to call TREMEC and see what they say

thanks again!!

ben
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