different starter for 153 and 168 tooth flexplates? [Archive] - Chevelle Tech

: different starter for 153 and 168 tooth flexplates?


70ssclone
May 1st, 11, 11:23 AM
my flexplate is a 168 tooth on my 454 , i have 6 different hi torque starters sitting on my shelving is there a difference in the starters or do they need shimmed? thanks

Mike
May 1st, 11, 11:31 AM
Without knowing just what starters you have ,all I can offer is that GM stock type used the offset bolt pattern for the 168t and straight bolt pattern for the 153t flywheel/flexplates.
You likely have dual pattern starter like the one shown that does fit both
http://www.gmpartsdirect.com/performance_parts/store/dbimagecache/746.gif
This type dual pattern just shift's the starter toward or away from the f/w-f/p and doesn't use the offset/straight bolt pattern for the change.

http://www.gmpartsdirect.com/performance_parts/store/catalog/Product.jhtmlPRODID=6&CATID=4.html

Showalter
May 1st, 11, 9:35 PM
Like Mike said, i have a similar one from Hitachi from Checkers that was about 160.00 that is also inline and supports both 153 and 168. works great for my 454, it being inline and clock-able fixed the issue i had with the Proform bb mini starter that knocked its form in the bottom of the block.

novaderrik
May 1st, 11, 10:01 PM
i don't know about the big blocks, but most 350's and 400's from the mid 70's didn't have the inner hole drilled for the straight across bolt pattern.

DZAUTO
May 1st, 11, 11:05 PM
my flexplate is a 168 tooth on my 454 , i have 6 different hi torque starters sitting on my shelving is there a difference in the starters or do they need shimmed? thanks

NEITHER a regular or hi-torque version is the issue of concern.
The ONLY concern (related to STOCK style GM Delco starters) is the starter nose. Period.
There are two styles of noses, straight across bolt pattern and staggered bolt pattern. The staggered bolt pattern nose comes in two versions, alum and cast iron. For an auto tranny 168 teeth flexplate, EITHER alum or cast iron nose will fit the bulge of the tranny. BUT, if using a 168 teeth flywheel for a manual tranny, then ONLY the cast iron nose will fit into the starter bulge of the bell housing.
The GM regular and hi-torque starter motors are completely interchnageable with any GM starter nose. Just as an example, you can remove a hi-torque starter from a junk 455 Olds (left hand mounted on the engine) sitting in the pasture and install either a straight across or staggered bolt pattern Chevy nose and install it on any Chevy V8 engine (right hand mount). :thumbsup:

novaderrik
May 1st, 11, 11:23 PM
NEITHER a regular or hi-torque version is the issue of concern.
The ONLY concern (related to STOCK style GM Delco starters) is the starter nose. Period.
There are two styles of noses, straight across bolt pattern and staggered bolt pattern. The staggered bolt pattern nose comes in two versions, alum and cast iron. For an auto tranny 168 teeth flexplate, EITHER alum or cast iron nose will fit the bulge of the tranny. BUT, if using a 168 teeth flywheel for a manual tranny, then ONLY the cast iron nose will fit into the starter bulge of the bell housing.
The GM regular and hi-torque starter motors are completely interchnageable with any GM starter nose. Just as an example, you can remove a hi-torque starter from a junk 455 Olds (left hand mounted on the engine) sitting in the pasture and install either a straight across or staggered bolt pattern Chevy nose and install it on any Chevy V8 engine (right hand mount). :thumbsup:

the late model permanent magnet starters with an aluminum nose fit in the older bellhousings that used to require a cast iron nose. these smaller starters showed up in the early 90's and weigh half as much and have as much power as an old high torque starter.
just throwing that out there for anyone that stumbles across this thread in the future.

DZAUTO
May 2nd, 11, 7:41 AM
the late model permanent magnet starters with an aluminum nose fit in the older bellhousings that used to require a cast iron nose. these smaller starters showed up in the early 90's and weigh half as much and have as much power as an old high torque starter.
just throwing that out there for anyone that stumbles across this thread in the future.

And Derrick is exactly correct! :thumbsup:
I was simply keeping the subject within the confines of original Delco type starters.
Without question, there certainly are other options available for a starter.