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87 4+3 Clutch?

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Old Apr 7, 2008 | 07:55 PM
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Default 87 4+3 Clutch?

Hey guys.new here.
I have had my 87 for 11 years.Bought it just after high school with 31,000 miles.It now has 114,000 miles and is in need of a clutch.
I have just bolt ons done to the car,nothing crazy.
But shortly,i plan on building a stout engine for it so im looking for a clutch setup(flywheel,disc,pressure plat,bearings,etc)that can handle some power so when i build the motor,i dont have to change the clutch again.
What do you guys recomend for a setup?
It has to handle 500-650hp,which is my goal for the new motor.
Thanks,great site!
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Old Apr 8, 2008 | 03:38 AM
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Originally Posted by 87L98Z52
It has to handle 500-650hp,which is my goal for the new motor.
Might be looking for a 4+3 replacement first with that Hp unless you drive like your grandmother
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Old Apr 8, 2008 | 06:37 AM
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Originally Posted by rodj
Might be looking for a 4+3 replacement first with that Hp unless you drive like your grandmother


At that power level you should be thinking of a ZF6 or T56.

Are you over estimating your power level? A 500-650 HP n/a small block is going to run like a turd on the street. A super/turbo charged motor is a different story, but we're talking about investing 10-15k into a car thats probably only worth what, 5k? Maybe you should re-evaluate your plans.

-- Joe
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Old Apr 8, 2008 | 08:37 AM
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No,plans are to build it.I have had this car since the summer after high school,and i will prob be buried in it.
Im going to stay with the 4+3,if it goes,ill worry about switching to the zf-6 down the line.
I know this is just a super t-10 with a od unit slapped on the back.It has givin me no problems to this point.I think as long as your not beating on it with od engaged,it helps it last.
Im actually thinking of doing some stuff to this motor even though it has alot of miles.
Maybe cam,heads,intake,exhaust,gears.Ill leave the short block alone and when she goes,ill build the new motor.
Anyone recommend a stout clutch to handle some power?

How about a Mcleod setup?
Thanks guys!
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Old Apr 8, 2008 | 08:58 AM
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Let me also say that i appreciate your opinions,i have read about the tranny swaps and about the 4+3 problems.I just dont want to swap at this time.I just dont want this to turn into a 4+3 tranny bashing post.
Im going to post another thread about mods to this existing shortblock so i can get your opinion on that as well
But first thing is first,i need to do a clutch and i need a good one.
Thanks again guys.
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Old Apr 8, 2008 | 09:18 AM
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Originally Posted by 87L98Z52
No,plans are to build it.I have had this car since the summer after high school,and i will prob be buried in it.
Im going to stay with the 4+3,if it goes,ill worry about switching to the zf-6 down the line.
I know this is just a super t-10 with a od unit slapped on the back.It has givin me no problems to this point.I think as long as your not beating on it with od engaged,it helps it last.
Im actually thinking of doing some stuff to this motor even though it has alot of miles.
Maybe cam,heads,intake,exhaust,gears.Ill leave the short block alone and when she goes,ill build the new motor.
Anyone recommend a stout clutch to handle some power?

How about a Mcleod setup?
Thanks guys!
The best 10.4" clutch I ran was the RAM ceramic 6 puck.

You can run a 10.7" clutch with the special pressure plate, but Im told my the clutch makers that the plate isn't as strong. The ZF uses a stepped bolt mounting point to get away with an 11" clutch.

See, you are limited by the factory hydraulics too, because you can't get a heavy enough pressure plate to make up for the lack of clutch area without overstressing the hydraulics.

A Dual friction clutch from fort wayne in a 10.4 is probably good to about 400hp, maybe more if slicks are not used.

-- Joe
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