409 flexplate

[Ed Habuda]

I am having a 1965 409 rebuilt. I have also had a 200r4 built for this motor. It appears the flexplate cover will not fit with a 168 teeth flex plate. can I go with a 153 teeth flex plate and what starter should I get.

 

[Don Jacks]

To install a 153 tooth plate,your blocks starter mouting pad will have to be drilled for the sdifferent starter required.It would be best to forgo the cover entirely.

 

[Murphdog]

To install a 153 tooth plate,your blocks starter mouting pad will have to be drilled for the sdifferent starter required.It would be best to forgo the cover entirely.

Don,
Aren't blocks drilled for the straight across pattern?
Jeff

 

[Don Jacks]

All I've seen were drillied 3 with holes,but whenever some one has used the small flywheel,they've had to drill the block for the matching starter.I just thought of a cover that should work.It would be from an 82-85 GM fullsize car that was equipped with the 5.7 diesel/200r4 trans. como.I don't remember them having the small 153 tooth flywheel.

 

[Jim Sullivan]

I had to cut out and add an additional piece to cover the flywheel when I put the 700r4 in my four door.

 

[Murphdog]

After some investigation this morning here is what I learned. On the straight across bolt pattern for a 153 tooth starter/flywheel combination the bolts holes have 3-9/32" spacing. BOTH holes have a recessed register that accepts the knurled alignment shoulder section of a special "starter bolt". A W block has an inner hole the appears to be for the 153 tooth combo, but is spaced at 2-13/16". This inner hole does not have a recess to accept the knurled shoulder. I think there is a cast iron 3 bolt vertical pattern starter nose that fits this W pattern but I did not find one handy to try.
Jeff

 

[Don Jacks]

Thanks for that clairification Jeff.

 

[SSpev]

After some investigation this morning here is what I learned. On the straight across bolt pattern for a 153 tooth starter/flywheel combination the bolts holes have 3-9/32" spacing. BOTH holes have a recessed register that accepts the knurled alignment shoulder section of a special "starter bolt". A W block has an inner hole the appears to be for the 153 tooth combo, but is spaced at 2-13/16". This inner hole does not have a recess to accept the knurled shoulder. I think there is a cast iron 3 bolt vertical pattern starter nose that fits this W pattern but I did not find one handy to try.
Jeff

That is correct. Pictures. http://www.348-409.com/forum/threads/starter-question.53851/#post-636268

 

[Murphdog]

Thanks SSpev, that is the starter nose I was thinking of. Not sure what it's application is. Maybe someone can comment.
Jeff

http://www.348-409.com/forum/attachments/1692884162870-jpeg.129436/

 

[SSpev]

It is for Aluminum PG and probably 65 64 aluminum bellhousings.
Older manuals had starters bolted to the bellhousing. (iron) These were use back to 57. i think even the iron PG used this style.