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Unread 07-14-2010, 09:09 PM   #1
rodjr
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1980 CJ7 
 
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what clutch for sbc swap with gm 151 bellhousing?

my sbc is here, motor mounts are here. need clutch. i have the iron duke bellhousing, 153 tooth flywheel, hydraulic clutch. my engine is from a 79 malibu, it had a 153 tooth, 10.4" clutch stock. can i just order one for a malibu? ive seen some pressure plates listed as high profile/low profile not sure which one i need, or if the stock one is high or low? help!

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Unread 07-14-2010, 11:26 PM   #2
southshore30
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You will need to order a throw out bearing for the Iron duke, use a 10.5" 10 spline GM clutch disk and pressure plate. They were used in 68/69 camaros and the early 80's Vette's and I'm sure a few more like your malibu. Diaphragham pressure plate Napa CA1897, and a Napa RCF 556 10.5" disc are the part numbers if you get them individually. I ordered them together. You will have to use a Iron Duke starter. You are right on about using the 153 tooth flywheel.
Just finished up w mine
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Unread 07-15-2010, 12:12 AM   #3
rodjr
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thanks! i just went to napa online and sure nuf, 68 camaro is same part # as 80 malibu. ill order tomorrow!
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Unread 07-15-2010, 05:23 AM   #4
cw4stein
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It's all based on what transmission you're going to use. I have a 327 in mine with the iron duke BH and a Ford T-18a/D300. I ordered the pilot bearing from Novak that had the SBC outer diameter and the Ford inside diameter. The clutch disc was indeed a 10.5 inch, 10 spline but it had to be 1 and 1/16 for the T-18a instead of the 1 and 1/8 that was originally on the SR4. Double check the outside diameter of the input bearing retainer too. I had to order one from Novak for the T-18a that fit the bore size of the iron duke BH.
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Unread 07-15-2010, 05:50 PM   #5
southshore30
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Yea, I didn't ask what trans you are using. I used a T-176 so I used the throwout bearing for the Iron duke with a T-176 trans. The pilot bearing that comes with the clutch is the right one. That is ithe 1 1/8" spline clutch I think.
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Unread 07-15-2010, 07:58 PM   #6
rodjr
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im using a t5, so 1 1/8 10 spline, same as chevy. i think the chev clutch should work, i was most worried about the pressure plate profile.
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Unread 07-15-2010, 11:16 PM   #7
southshore30
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It's not gonna take long to grenade that transmission! Why not start with something stronger? Can you find a T-176? Is that the trans the bellhousing is drilled for? Do some more research on that trans, its not going to hold up long.
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Unread 07-15-2010, 11:55 PM   #8
rodjr
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i am aware of the t5s weakness, however i intentionally sought out this particular engine for that reason, that and these engines got incredible mpg, made peak torque at 2000rpm, and ran super smooth. its a 1979 malibu 267ci (4.4l)v8, bone stock. its 125hp, 215 lbft. considering a stock 258 i6 makes 110-115hp and 210ish lbft, i think it will last a good bit. i only use the jeep as dd and some logging roads with a little snow here and there. i know a guy who has a t4 behind a 305 and its been there for 8 yrs. i know its a gamble but im gonna risk it.

Last edited by rodjr; 07-16-2010 at 12:46 AM..
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Unread 07-16-2010, 09:23 AM   #9
CSP
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Wow, there are still some of those engines around huh?

I had one in a 1980 Chevy Monza in high school. Great engine and lotsa people got surprised by the little car they assumed had a four cylinder in it.
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Tags
bellhousing , chevy , clutch , clutch fork , diaphragm , iron duke , pressure plate , t176 , throwout bearing

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