As you know, I goofed on my 3.4 swap and put an unbalanced 86 2.8 flywheel on a 3.4 pushrod motor. I'm checking junkyards and car-part.com now looking for another flywheel so I can minimize down time, but I'm having a little trouble. Neither the 88 Fiero or the Grand Prix with the 3.4 DOHC are common in the junkyard.

So what other GM cars had the 2.8 with the balanced flywheel or other engine with a balanced flywheel that will work for my application?

Dont quote me on this, but i HEARD most, if not all GM 60* V6s were neutrally balanced after 88. Dont remember where I heard that, and Im not presenting it as fact, but merely suggesting you look into it.

Correct.

http://www.partsamerica.com/PartDetails.asp?SourceArea=&SourcePage=SEARCHRESULTS&MfrCode=sfw&MfrPartNumber=6500&PartType=267&PTSet=A

Kragen Auto Parts #1351
1626 Freedom Blvd, Freedom
Freedom, CA 95019
(831) 722-1108
has one in stock

Our Price: $39.99
Core Charge: $35.00

------------------
'84 Fiero Sport Quad 4 coming soon
'87 Blue GT 3.4L Swap in progress!!!!!!!!
http://www.lasvegasfieroclub.com/
Rate me if I'm usefull

i purchased one from advanced auto parts, for a 1988 beretta GT 5 speed, it was 49.99 with no core charge.

matthew

since i need to resurface the on my 87 GT, could i simply get e neutrally balanced one? the price is almost the same as what i would pay to get it reworked... question is... would it fit?

quote Originally posted by pft_217: since i need to resurface the on my 87 GT, could i simply get e neutrally balanced one? the price is almost the same as what i would pay to get it reworked... question is... would it fit?

no, it wont work, yours is not balanced neutrally, if you put a neutral flywheel on your motor, it will vibrate apart.

the weight is on your motor to counter balance the crank.

matthew

quote Originally posted by m0sh_man: no, it wont work, yours is not balanced neutrally

Didn't he say up top that he now has a 3.4? Unless I'm mis-reading it...

If so, it'd be a neutral balance would it not?

Oh, as for the original question - check a Hollanders interchange manual. There's a WHACK of them that will fit. Some Isuzu's used them, the 2000 Sunbird 2.2L, etc etc.

Mosh_man was answering pft_217's question. pft_217 says he has an 87 2.8 engine. The 87 2.8 engine is not internally balanced so the neutrally balance flywheel will not work with it, it will be detrimental to the engine's life. The 88 2.8 engines are internally balanced and required a neutrally balanced flywheel. The other engines that share this are the 3.1 and 3.4, as the used the same crank.

[This message has been edited by avengador1 (edited 05-04-2004).]

get one from an early 90's corsica, beretta, or S-10. Those should all work. Make sure the clutch used on the flywheel was 9 1/8" not 8 1/2". You can check this by measuring with a ruler. You can see where the clutch burned into the flywheel. Ask for several of them, often you can find one that is in excellent shape and will not require resurfacing.

Neutrally balanced flywheels suitable for a Fiero.

2000 82 M.T.; (2BC)
2000 83-84 M.T.; 4-121 (2.0L)
6000 87-88 M.T.
BERETTA 87-89 M.T.
BERETTA 90-93 M.T.; 6-191 (3.1L)
BERETTA 90-94 M.T.; 4-134 (2.2L)
BERETTA 95-96 M.T.
CAVALIER 82-84 M.T.
CAVALIER 85-86 M.T.; 4-121 (2.0L)
CAVALIER 87-94 M.T.
CAVALIER 95-99 M.T.; 4-134 (2.2L)
CAVALIER 00-01 M.T.; 2.2L
CAVALIER 02 M.T.; 2.2L, VIN 4
CELEBRITY 87-88 M.T.; 6-173 (2.8L)
CIMARRON 82-84 M.T.
CIMARRON 85-86 M.T.; 4-121 (2.0L)
CIMARRON 87-88 M.T.; (6-173, 2.8L)
CORSICA 87-96 M.T.
CUTLASS 88-89 M.T., FWD; (6-173, 2.8L)
FIERO 88 M.T.; 6-173 (2.8L)
FIRENZA 82 M.T.; (2BC)
FIRENZA 83-86 M.T.; 4-121 (2.0L)
FIRENZA 87 M.T.; 4-121 (2.0L), VIN (8th digit) "1"
FIRENZA 87 M.T.; 6-173 (2.8L)
FIRENZA 88 M.T.; (4-121, 2.0L), VIN (8th digit) "1"
GRAND PRIX 88-90 M.T.
ISUZU HOMBRE 96 M.T.
ISUZU HOMBRE 97-00 M.T.; 2.2L (4 cylinder)
ISUZU PUP (PICKUP) 91-94 M.T.; 3.1L (6 cylinder, TBI)
ISUZU RODEO 91-92 M.T.; 3.1L (6 cylinder), 6 bolt transmission cover
S10/S15/SONOMA 94-98 M.T.; 4-134 (2.2L)
S10/S15/SONOMA 99-02 M.T.; 2.2L
SKYHAWK 82 M.T.; (2BC)
SKYHAWK 83-86 M.T.; 4-121 (2.0L)
SKYHAWK 87-88 M.T.; VIN (8th digit) "1"
SKYHAWK 89 M.T.
SUNBIRD 85-86 M.T.; 4-121 (2.0L)
SUNBIRD 91-94 M.T.; 6-191 (3.1L)
SUNFIRE 95-99 M.T.; 4-134 (2.2L)
SUNFIRE 00-01 M.T.; 2.2L
SUNFIRE 02 M.T.; 2.2L, VIN 4
TEMPEST 87-93 M.T.
ISUZU TROOPER 89-91 M.T.; 2.8L (6 cylinder)

[This message has been edited by Steve Normington (edited 05-04-2004).]