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11/12/09 9:15pm - Original Message: 'New Rear End??'
shanes79
Former Member
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Tacoma, WA - USA

Vette(s):
1979 L48 Resto-Mod. ZZ383 w/ TKO-500 manual transmission. Centerforce clutch. Tail light conversion. A/C. BeCool radiator. Red exterior with custom black and white leather interior by Mid America Motorworks.

Joined: 10/30/2007
Posts: 85
Hello everyone.  Haven't been on C3VR lately..bust with work.  Done some things to the Vette though...and my question is this.  I plan on dropping a ZZ383 crate motor into the Red Dragon. GM advertises 425HP with 449 ft/lbs Torque.  I know the rear diff. on the C3 is a lim-fac when upgrading to a higher performance motor. Anyone see any issues with keeping the stock rear with that much muscle??

Thanks.
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11/13/09 2:29pm - Reply: 'New Rear End??'
VetteSpecialties
Former Member
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Mounds View, MN - USA

Vette(s):
70 LT1 coupe, 69 350 HP coupe, 69 390HP 427 coupe, 71 LS5 convert, 85 coupe, 93 coupe

Joined: 5/24/2007
Posts: 1031
Factory Corvettes made as much as 435 HP and held up OK.  Of course, the harder you abuse it the shorter it's life, but I know people who have given theirs a lot of abuse and they are still working.

Larry


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11/14/09 10:09am - Reply: 'New Rear End??'
lukesvette Lifetime Member
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HOWELL, NJ - USA

Vette(s):
1979, Targa Blue (72 Color), Pace Car rear spoiler, L88 hood, Dark blue factory interior, 525HP 406, HD 700R4, 370 gears,Steeroids, composite rear spring, TT IIs wrapped in T/A Radials.

Joined: 5/18/2004
Posts: 6804
Keep after your universal joints....Wink

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11/14/09 8:32pm - Reply: 'New Rear End??'
Adams' Apple Lifetime Member
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Duncanville, TX - USA

Vette(s):
#1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/ Am-Fm/map light National/Regional/Chapter NCRS "Top Flight" #2-1985 Bright Red/Carmine Cp.L-98/auto Member: NCRS, NCRS Texas, Corvette Legends of Texas

Joined: 11/8/2003
Posts: 19449
Yeah...your half-shafts will likely give up da ghost long before the diff will. The actual diff is pretty bullet proof, in most cases, unless there is a problem with it to start with.

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 Forums -> C3 Driveline Components
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