C4 drivetrain question?
Thread Starter
Burning Brakes
Joined: Dec 2002
Posts: 947
Likes: 0
From: Middletown N.Y.
C4 drivetrain question?
I'm gonna put a 550HP SBC in my 89 C4 and was wondering if the rest of the drivetrain will be upto the task. I've got a Art Carr 700R4 ( I've never used a 700R4 behind this much power and although Art Carr claims it will last I'm kinda skeptical) also I have Denny's driveshaft and halfshafts with a otherwise stock D44's with 3.45:1's. Anyone see a weak link? I'll be shifting at around 6500 top's and mostly on DRadials. I'm considering the much stronger Th400 along with a 2.56:1 rear gear which would actually give me 2 speeds for the quarter and third would act like an OD gear, but I'm concerned about how much this would slow the car down versus the 700R4/3.45:1 combo. Any suggestions from 700R4 owners? :confused:
Melting Slicks
Joined: May 2000
Posts: 2,148
Likes: 1
From: Chandler AZ
Re: C4 drivetrain question? (JUAN J SANCHEZ)
Sounds good. Make sure you have bulletproof U-joints everywhere (and no grease fittings). Also check your rear wheel bearings. While you're at it, has the diff oil ever been changed? I like the Redline shock-proof 90/140 wt for puttin that kind of power to the ground. One more idea- the ZFdoc drive beam reinforcements will help keep things aligned under heavy torque.
Thread Starter
Burning Brakes
Joined: Dec 2002
Posts: 947
Likes: 0
From: Middletown N.Y.
Re: C4 drivetrain question? (gcrouse)
Thanks! I'll look into the ZFdoc beam supports. I will be putting new rear wheel bearings and new fluid also. The RWHP will be around 440.Thanks!
Le Mans Master
Joined: Oct 1999
Posts: 9,713
Likes: 3
From: Sachse Texas
Cruise-In I Veteran
Cruise-In II Veteran
Re: C4 drivetrain question? (JUAN J SANCHEZ)
I would not worry about the outer spindles with Drag Radials and an automatic. Usually they are a problem with slicks, high rpm launches, and stick shifts. I would say the weak link is Art Carr, or at least his trannies.
Melting Slicks
Joined: Mar 2002
Posts: 3,108
Likes: 126
From: S.L.C. UT
Re: C4 drivetrain question? (jburnett)
I am a firm believer in cryoed parts. I dump the clutch at 5500-6000 rpm with slicks, and run low 1.5 60 ft times and nothing breaks. It amazes me how much abuse it will take.
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Thread Starter
Burning Brakes
Joined: Dec 2002
Posts: 947
Likes: 0
From: Middletown N.Y.
Re: C4 drivetrain question? (tpi 421 vette)
I'm gonna send you (jburnett) my valve springs and the I don't know what they call 'em splined shaft that ties the diff to the half shafts, why not the spindles? What is it exactly I have to have cryoed?
Melting Slicks
Joined: Jul 1999
Posts: 2,875
Likes: 0
From: Olive Branch (Memphis suburb) MS
Cruise-In II Veteran
Re: C4 drivetrain question? (tkrussell)
Thomas, get in touch with jburnett (Jeb), he'll let you know exactly what's needed and he is not to far from you (Little Rock). badvette@prodigy.net
Drifting
Joined: Jun 2000
Posts: 1,338
Likes: 0
From: Fontana CA
Re: C4 drivetrain question? (JUAN J SANCHEZ)
Art Carr claims it will last
(877)Art-Carr, (877) 278-2277
The guy in Texas started using Art's name while Art was still retired. I do not know much about the guy in Texas but you have to wonder about someone that is standing on someone else's reputation.
