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  #16 (permalink)  
Old 04-06-2013, 06:43 PM
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I don't know, so asking, is there a difference between Vortec and early SBC starters? I see some mini starters listed do not work with LS motors.
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  #17 (permalink)  
Old 04-08-2013, 11:17 AM
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The difference is the pre 86 and post 86 flexplates. Pre 86 had the 2 piece RMS and the post 86 had the 1 pice RMS.
The 1 piece RMS required the round crank end which necessitated the flexplate/flywheel with the welded on weight to make up for teh weight that was on the 2 piece RMS cranks.

I piece RMS left, 2 piece RMS right


I piece RMS


400 2 piece RMS


There isnt any difference between Vortec(1996-1999 305/350) and non-Vortec (1986-1995) flexplates.

I installed a reman starter on my 1997 Vortec 350 truck, and after a short while it started to make horrible noises as the starter gear wasnt fully engaging the flexplate gear.

Never did solve that issue.

peace
Hog
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  #18 (permalink)  
Old 04-08-2013, 11:21 AM
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Quote:
Originally Posted by MouseFink View Post
Besides the number of gear teeth and overall diameter, there are two types of flex plates. One flex plate has a "flat" crank flange bolt circle with a spacer between the crank flange and the flex plate, and it uses longer bolts. The other has a "dished" crank flange bolt circle. Just something to think about because I have see this happen before.

Spacer, GM 12563532 (1 spacer)
Bolts, GM 11569956 (pack of 10 bolts) *

*Some dealers will break up a package of parts and some won't.
This spacer is only for GEN 3/4 engine use or transmissions that were behind GEN 3/4 engines.
It wont help in this instance. The flexplates you are talking about are for GEN 3/4 use as well.

peace
Hog
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  #19 (permalink)  
Old 04-08-2013, 12:17 PM
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Quote:
Originally Posted by Hogg View Post
This spacer is only for GEN 3/4 engine use or transmissions that were behind GEN 3/4 engines.
It wont help in this instance. The flexplates you are talking about are for GEN 3/4 use as well.

peace
Hog
Hogg, Thanks. Nice to see someone post some useful info. One-piece for me. I've got another (3rd) starter coming supposedly from Chevy Performance. If it doesn't engage any more fully, I'm going to have a machine shop bush and re-drill the bolt holes in the alum. mounting plate. This should be a roll-off-the-wall easy job and no matter the cost, solves my dilemma - time to move on.

I'll post later for posterity.
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Old 04-08-2013, 01:42 PM
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Quick Time #RM-935 flex plate spacers. Kit of 5 steel spacers from .030" to .125" thick.

Fits: 1974-1985 Chevrolet V8 (1-piece seal)
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  #21 (permalink)  
Old 04-08-2013, 05:06 PM
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Mousefink, I dont think that is going to help him, flywheel is already too far out, with no shims.
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Old 04-09-2013, 10:10 AM
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Success!!

Chevrolet Performance starter fits like it should, teeth mesh fully, backlash is good. The other two 'off brands' are going back.

Glad to get this off the list.
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Old 04-09-2013, 11:12 AM
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Yeah look at the difference between pic 1 and pic 3. Pic 1 the starter looks like it mounts 1/8 inch further forward (away from flywheel) than in pic 3. Good call Mitchman, I guess thats a starter for earlier motor? or just Chinese engineering? Thankl for updating us.
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