i'm gonna be putting a built up caddy 4.9L v8 in my fiero, it has outputs 320 hp and 400 ft lbs of torque. i'm using the econo 4 speed manual muncie that came with certain 84 fieros.. I need a clutch and plressure plate combo suitable for handling that much torque..anybody have suggestions? any and all suggestions would be appreciated, thanks.
my email addy is aaronrus@tampabay.rr.com
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09:20 AM
PFF
System Bot
Will Member
Posts: 14300 From: Where you least expect me Registered: Jun 2000
What's been done to it? I didn't think the 4.9 had the head flow for 400 ftlbs. That's real close to 100% VE.
At that power level a SPEC Stage III is prolly your best bet. www.speclutches.com
------------------ '87 Fiero GT: Northstar, Getrag, TGP wheels, rear sway bar, rod end links, bushings, etc. '90 Pontiac 6000 SE AWD: Leaking ABS unit fixed, load levelling rear suspension fixed, still slow
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09:37 AM
aaronrus Member
Posts: 870 From: bradenton, FL USA Registered: Nov 2003
yeah the company that did the work is ASG in indianapolis. they said the engine has been maximized and you cant really squueze any more power out of it normally aspirated.. im not sure exactly what all is done to it, but its stroked to 5.0L and head work is done, new crank, new pistons, new cam, new liners, new rods, new lifters, rocker arms, guides, valve springs.. bla bla bla, etc...
quote
Originally posted by Will:
What's been done to it? I didn't think the 4.9 had the head flow for 400 ftlbs. That's real close to 100% VE.
At that power level a SPEC Stage III is prolly your best bet. www.speclutches.com
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02:02 PM
aaronrus Member
Posts: 870 From: bradenton, FL USA Registered: Nov 2003
they dont list what the torque carrying capacity is for any of those clutches though. the stage three says "ULTIMATE STREET/STRIP CLUTCH! Sharp but smooth engagement with light pedal.", and the stage 4 says, "Available in 3 or 6 wing design for serious road racing and drag racing.".. the stage 4 kit costs 20 bucks more, does that mean its better? this car is gonna be a dialy driver too, so i want the clutch to be manageable
[This message has been edited by aaronrus (edited 11-13-2003).]
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02:09 PM
$Rich$ Member
Posts: 14575 From: Sioux Falls SD Registered: Dec 2002
i have the Spec Copper puck stage III clutch with my 350 thats pushinf 400hp and Alot of Tq. im also using the 4.10 4 speed tranny it is a verry nice clutch, agressive, yet streetable, im 100% happy with it
rumor has it its the choice of the ZO6 owners
------------------ Rich AIM one fast 2m8
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02:27 PM
aaronrus Member
Posts: 870 From: bradenton, FL USA Registered: Nov 2003
thanks for the info bro.. stage three it is then.. do you remember what the part number was for it? i check the website for clutch kits for the fieros, it seems there is a different part number for the 5 speed getrags and the 4 speed muncie trannys... the muncie tranny clutches dont list a torque capacity for any of the stages, and the getrags list 450 ft lbs under the the stage 3, which would be adequate for my application with the caddy v8. everywhere ive looked for afetrmarket clutches, they ALL list the 4 speed and the 5 speed both having the same pressure plate and clutch AND fly wheel, so i was wondering if the website just has mis-information or not.. can anyone help me out here with this mystery?
quote
Originally posted by $Rich$:
i have the Spec Copper puck stage III clutch with my 350 thats pushinf 400hp and Alot of Tq. im also using the 4.10 4 speed tranny it is a verry nice clutch, agressive, yet streetable, im 100% happy with it
rumor has it its the choice of the ZO6 owners
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02:42 PM
aaronrus Member
Posts: 870 From: bradenton, FL USA Registered: Nov 2003
come one people.. anybody got an answer outthere? all you manual tranny guru's
quote
Originally posted by aaronrus:
thanks for the info bro.. stage three it is then.. do you remember what the part number was for it? i check the website for clutch kits for the fieros, it seems there is a different part number for the 5 speed getrags and the 4 speed muncie trannys... the muncie tranny clutches dont list a torque capacity for any of the stages, and the getrags list 450 ft lbs under the the stage 3, which would be adequate for my application with the caddy v8. everywhere ive looked for afetrmarket clutches, they ALL list the 4 speed and the 5 speed both having the same pressure plate and clutch AND fly wheel, so i was wondering if the website just has mis-information or not.. can anyone help me out here with this mystery?
[This message has been edited by aaronrus (edited 11-13-2003).]
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10:13 PM
aaronrus Member
Posts: 870 From: bradenton, FL USA Registered: Nov 2003
thanks for the info bro.. stage three it is then.. do you remember what the part number was for it? i check the website for clutch kits for the fieros, it seems there is a different part number for the 5 speed getrags and the 4 speed muncie trannys... the muncie tranny clutches dont list a torque capacity for any of the stages, and the getrags list 450 ft lbs under the the stage 3, which would be adequate for my application with the caddy v8. everywhere ive looked for afetrmarket clutches, they ALL list the 4 speed and the 5 speed both having the same pressure plate and clutch AND fly wheel, so i was wondering if the website just has mis-information or not.. can anyone help me out here with this mystery?
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11:19 PM
normsf Member
Posts: 1682 From: mishawaka, In Registered: Oct 2003
Hello, I sense a fair amount of fustration on your part, dont worry youre not alone. The clutch has been a problem for a lot of guys that run bigger motors. The disc and plate are basicly the same for the fiero,its the throw out bearing where it may get confusing. Each application reguires a different throw out, what you need to know is what trans your using(yr, 4spd,5spd getrag or not) Mine is a ceramic and kevlar disc with a stronger plate from www.normsfiberglass.com I recommend that you also get the adjustable banjo rod from Rodney Dickman about 20 dollars or so. Call me at 574-255-7843 thanks Norm.
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11:39 PM
aaronrus Member
Posts: 870 From: bradenton, FL USA Registered: Nov 2003
Hello, I sense a fair amount of fustration on your part, dont worry youre not alone. The clutch has been a problem for a lot of guys that run bigger motors. The disc and plate are basicly the same for the fiero,its the throw out bearing where it may get confusing. Each application reguires a different throw out, what you need to know is what trans your using(yr, 4spd,5spd getrag or not) Mine is a ceramic and kevlar disc with a stronger plate from www.normsfiberglass.com I recommend that you also get the adjustable banjo rod from Rodney Dickman about 20 dollars or so. Call me at 574-255-7843 thanks Norm.
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11:45 PM
Nov 14th, 2003
California Kid Member
Posts: 9541 From: Metro Detroit Area, Michigan Registered: Jul 2001
