383 stroker 8inch balancer?
Thread Starter
Intermediate
Joined: Sep 2007
Posts: 33
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383 stroker 8inch balancer?
my 86 is getting a 383 stroker built but the 8 inch external balancer is gonna hit the cross member i think. there are probly several solutions as to this.. ideas anyone?
Thread Starter
Intermediate
Joined: Sep 2007
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thought about beating it but then figured theres got to be some other better out there. may beat it yet though..lol. 6 ichis same as original l98 350 and internal balance and would clear but cant use it cause the 383 is external balance and needs a like balancer.
Safety Car
Joined: Jan 2006
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From: Mt Laurel NJ
St. Jude Donor '06-'07
The L98 in your car and mine is externally balanced. I'm sure others will chime in, but I am pretty sure you can use a 6" balancer on the front of a GM crate 383.
Melting Slicks
Joined: Mar 2002
Posts: 3,108
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From: S.L.C. UT
Pioneer, and there are other ones out there that make a small external balance damper. Around 6 1/4"- 6 1/2". I don't remember the exact size. But I have used one on a 383 super ram motor I did that was external balanced in a 87 Vette, and it cleared the crossmember fine without beating on it
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Melting Slicks
Joined: Mar 2002
Posts: 3,108
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From: S.L.C. UT
By the way... our L98's and all 1 piece rear seal small blocks including LTx motors are balanced like this from the factory: the front half is internal balanced, and the rear half is external balanced.
Le Mans Master
Joined: Aug 2000
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From: Australia
Instructor
Joined: Sep 2006
Posts: 133
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From: Mt Pleasant Michigan
The smaller External balancer is 6.75" one of them anyway and the only one I could find (reasonable anyway $60.00) is from Professional Products, Jegs, Speedway, Northern and Probably Summit sell it, the part number is 8001.
The L98 are not externally balanced. The one piece crankshafts have a balance weight on the Flywheel/Flexplate only, this is because the original 350 crankshaft had an offset on the crank at the flywheel this was removed when they made the rear end of the crank round to slide through the one piece seal, rather than re-invent the wheel they put a small piece of weight on the Flywheel/Flexplate only to make up for the loss of the small offset. The L98 is not externally Balanced.
Joe
The L98 are not externally balanced. The one piece crankshafts have a balance weight on the Flywheel/Flexplate only, this is because the original 350 crankshaft had an offset on the crank at the flywheel this was removed when they made the rear end of the crank round to slide through the one piece seal, rather than re-invent the wheel they put a small piece of weight on the Flywheel/Flexplate only to make up for the loss of the small offset. The L98 is not externally Balanced.
Joe
Instructor
Joined: Feb 2004
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From: holland
The smaller External balancer is 6.75" one of them anyway and the only one I could find (reasonable anyway $60.00) is from Professional Products, Jegs, Speedway, Northern and Probably Summit sell it, the part number is 8001.
The L98 are not externally balanced. The one piece crankshafts have a balance weight on the Flywheel/Flexplate only, this is because the original 350 crankshaft had an offset on the crank at the flywheel this was removed when they made the rear end of the crank round to slide through the one piece seal, rather than re-invent the wheel they put a small piece of weight on the Flywheel/Flexplate only to make up for the loss of the small offset. The L98 is not externally Balanced.
Joe
The L98 are not externally balanced. The one piece crankshafts have a balance weight on the Flywheel/Flexplate only, this is because the original 350 crankshaft had an offset on the crank at the flywheel this was removed when they made the rear end of the crank round to slide through the one piece seal, rather than re-invent the wheel they put a small piece of weight on the Flywheel/Flexplate only to make up for the loss of the small offset. The L98 is not externally Balanced.
Joe
Melting Slicks
Joined: Mar 2002
Posts: 3,108
Likes: 126
From: S.L.C. UT
The L98 are not externally balanced. The one piece crankshafts have a balance weight on the Flywheel/Flexplate only, this is because the original 350 crankshaft had an offset on the crank at the flywheel this was removed when they made the rear end of the crank round to slide through the one piece seal, rather than re-invent the wheel they put a small piece of weight on the Flywheel/Flexplate only to make up for the loss of the small offset. The L98 is not externally Balanced.
Joe
Joe
I guess if you consider a flywheel with a weight on it to be internal balance, that's a new one on me.
Last edited by tpi 421 vette; Mar 13, 2008 at 11:34 AM.
Team Owner
Joined: Sep 2001
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From: Athens AL
C7 of the Year - Unmodified Finalist 2021
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Your original L98 is an externally balanced engine. Its different from a 400 which uses a weight on the damper. The L98 motor with the 1 pc seal has a neutral balanced damper up front and the flywheel has a weight on one side. Hence, externally balanced.
