1986 Flex plate tooth number?
08-20-2009, 11:28 AM
#1
Burning Brakes
Thread Starter
1986 Flex plate tooth number?
Im replacing my flywheel not (flex plate) and wanted to no how many teeth are on it?
Thanks
Thanks
Last edited by rad928music; 08-20-2009 at 05:29 PM. Reason: wrong part
08-20-2009, 05:30 PM
#5
Thoroughly chapped
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Keep in mind the difference in a 87+ motor that has a one-piece rear main, vs the earlier motor that was
two-piece. The bolt pattern and center hole size on the 87+ is smaller.
two-piece. The bolt pattern and center hole size on the 87+ is smaller.
08-23-2009, 09:39 AM
#6
Burning Brakes
Ah, I'm pretty sure the one piece seal started in '86. (It's been a LONG time since I dropped my clutch out). I think '85 was the last of the two piece rear mains.
12-01-2010, 04:32 AM
#7
- 1986 Original Owner -
12-01-2010, 01:08 PM
#8
Slingshot
12-01-2010, 01:36 PM
#9
Race Director
Wasn't 86 a transition year with the earlier models having a 2 piece seal and the later one's a one piece, or was that the aluminum heads?
12-01-2010, 03:02 PM
#10
- 1986 Original Owner -
That was aluminum heads only. All the blocks were one piece seal. There is talk that the very late '86 had roller cam or were at least roller blocks, but my '86 block is stamped 0627 so there weren't many after that and mine is not a roller block.
12-01-2010, 03:12 PM
#11
Le Mans Master
I don't recall what was stamped on the block though.
Jake
12-01-2010, 03:14 PM
#12
Slingshot
Ray - my roadster is a relatively early convertible, assembled approximately 14% thru the mid-year roadster run. How can you tell if the engine is a roller block? Is there anyway to discern if an engine has roller lifters without disassembly?
12-01-2010, 08:36 PM
#13
Le Mans Master
[QUOTE=pmihaltian;1576086878]Ray - my roadster is a relatively early convertible, assembled approximately 14% thru the mid-year roadster run. How can you tell if the engine is a roller block? Is there anyway to discern if an engine has roller lifters without disassembly?[/QUOTE]
Using a flash light you should be able to see the spider bolted to the lifter valley once a valve cover is removed. There are other ways too but that one seems to be the easiest.
Jake
Using a flash light you should be able to see the spider bolted to the lifter valley once a valve cover is removed. There are other ways too but that one seems to be the easiest.
Jake
12-01-2010, 10:22 PM
#14
Race Director
12-02-2010, 12:46 AM
#15
- 1986 Original Owner -
Pete, Jake's method would be the only way I can think of short of disassembly. As yours is also known by you to be unmolested, I can't see the point though. You can be assured that yours is not roller. What happens (and it stands to reason why people make the assumption that very late '86 Corvette blocks could be roller) is that the factory runs out of '86 blocks toward the end of the run and uses '87 blocks to complete the production run. But as I said, mine is quite late, June 27 '86 engine date and July 15th vehicle assembly date. I can't remember when shutdown for changeover happened, but it wouldn't have been too long after that. In fairness, they did make about 400 convertibles after mine and I don't know how many coupes, but I've yet to see from any verifiable source that any '86 Corvettes were produced with roller blocks.
