how much hp can 700r4 and 7.5 10bolt handle

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Sep 22, 2002 | 01:01 PM

camar0luvr

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Joined: Sep 2002

Posts: 34

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From: imlay city, MI

how much hp can 700r4 and 7.5 10bolt handle

I am trying to find out if i need to upgrade my trans and rearend before my engine. i am getting a 383 putting out 550hp and 570 ft lbs. thanks for any help

Sep 22, 2002 | 03:50 PM

jase

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Joined: Jan 2001

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From: west Point MS USA

It should handle about 350-400hp with no problem.Anything more is questionable for the 700r without a beefy rebuild.The rearend can take about 500hp give or take if it isn't abused everyday.

Sep 22, 2002 | 08:03 PM

AlkyIROC

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Joined: Jul 1999

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From: 51°N 114°W, 3500'

Car: 87 IROC L98

Engine: 588 Alcohol BBC

Transmission: Powerglide

Axle/Gears: Ford 9"/31 spline spool/4.86

The stock 7.5" I don't know but I ran one that was beefed up as per the tech article (Ultimate 10 bolt). I went as quick as 11.24 at 121 mph.

I only switched to a 9" when I added a transbrake. I didn't think the 7.5" could take more than one hit off the transbrake.

Sep 22, 2002 | 08:06 PM

86IROCNJ

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Joined: May 2002

Posts: 2,119

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From: Central NJ

Car: 86 Iroc-Z28

Engine: FB385

Transmission: 700r4

That's a pretty strong 383! Join my group purchase on the Moser 12-bolts, do it now! J/K

Sep 22, 2002 | 09:44 PM

camar0luvr

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From: imlay city, MI

thanks guys gotta know which to purchase first

Sep 22, 2002 | 11:26 PM

chevy350

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From: working at a horse farm, gonna go to somerset county tech. inst. in january.

Car: 87 GMC sierra classic

Engine: fresh 350, minor mods (its been de-emissioned too)

Transmission: professionally re-built 700R4, REALLY hard shifts & bigger clutch packs

DAMN!! Thats one stout 383!:rockon: I never wouldve thought a 7.5" could handle a run that quick, but i guess so. I would upgrade to at least a 12 bolt.