700r4 bell housing issue and will it survive?

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Strictly Attitude
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700r4 bell housing issue and will it survive?

Post by Strictly Attitude » Thu Jun 29, 2017 1:22 pm

So new engine is almost done I have a 700r4 trans though and the bellhousing bloke off where a bolt was supposed to be pulled clean break (really pissed about it but was late fighting daylight when engine was pulled). I know I can replace the bell housing with JW for $390 not wanting to so will more then likely have it tig welded by a friend. Is this going to be ok?

Next question New engine is going to be close to 600hp and Around 550tq according to simulation 11.2:1 383 solid roller engine that I want to push to about 7200rpm. These are my mods to the trans no slicks but wide sticky street tires, plan on hardly any or no drag race launches. Smoking of the tires will happen here and there. here is a list of mods.
The trans case was a 1983 core
Input drum changed out to a 93 4l60E one which I installed a Z-pack into
new reverse drum with a new wide 2 5/8 carbon fiber power band from PATC
New lock up solenoid
.500 Boost Valve
10 vane pump
29 element sprag
corvette servo
Sonnax Smartshell kit
Sonnax support Shaft
Raybestos Clutches
TCI full manual reverse pattern valve body with Engine Braking
RevMax Stage 3 9.5" 2600 torque converter with Carbon Fiber lock up clutch
Derale cooling pan
Complete rebuilt kit installed including bushings.
Checked tolerances used ASTG and advise from Mark Bowler of Bowler transmissions.

Not many miles on the rebuild. Will it survive or can I cheaply modify to survive for about a year when I switch to a TKO600?
John J. Coffey
Strictly Attitude Custom Graphics
Specializing in high end Airbrush and Custom Paint

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Re: 700r4 bell housing issue and will it survive?

Post by PackardV8 » Thu Jun 29, 2017 2:31 pm

no slicks but wide sticky street tires, plan on hardly any or no drag race launches. Smoking of the tires will happen here and there. Will it survive or can I cheaply modify to survive for about a year when I switch to a TKO600?
Yes, probably. I've successfully welded a few broken mount ears.

No, there's never any guarantee a 700R4 or any automatic will survive and fifty years of experience predicts everyone who says "hardly any drag race launches" will be regularly burnin' and bangin' that poor thing.

Maybe, you're essentially risking nothing but the labor.
Jack Vines
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Strictly Attitude
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Re: 700r4 bell housing issue and will it survive?

Post by Strictly Attitude » Thu Jun 29, 2017 7:59 pm

Yeah not gonna be the gentlest on it that is for sure, but will do what I have to give it a chance to last a little longer or survive a harder bashing on it. I see a ton of different opinions on the 700r4. I know it is not the strongest and there are a ton of guys that don't run them saying how bad they are so sorting through the truth seems tough.
John J. Coffey
Strictly Attitude Custom Graphics
Specializing in high end Airbrush and Custom Paint

Strictly Attitude
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Re: 700r4 bell housing issue and will it survive?

Post by Strictly Attitude » Thu Jun 29, 2017 8:00 pm

Forgot to mention I understand nothing is gospel as this point making power breaks things comes with making power.
John J. Coffey
Strictly Attitude Custom Graphics
Specializing in high end Airbrush and Custom Paint

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