I was going to start digging and then it occurred to me---are you wanting to know if the original 63 flywheel is 153 or 168? Or a replacement flywheel you are getting that you plan to install when you do the conversion?
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1966 Strato Chief 2 door, 427 4 speed, 45,000 original miles
1966 Grande Parisienne, 396 1 of 23 factory air cars
I am thinking he is asking if his car currently has a 153 or a 168 but I was hoping he would see this and confirm that. I assume he doesn't want to change starters so wants to stick with the same diameter.
All speculation of course...
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1966 Strato Chief 2 door, 427 4 speed, 45,000 original miles
1966 Grande Parisienne, 396 1 of 23 factory air cars
I am thinking he is asking if his car currently has a 153 or a 168 but I was hoping he would see this and confirm that. I assume he doesn't want to change starters so wants to stick with the same diameter.
All speculation of course...
You eastern dudes need to give us here in Calgary some time to get up in the morning....
....you're right Carl, wanted to know what my 283 presently has......is there an advantage to changing the flywheel (and the starter ) to a 168 tooth?
Thanks for the list Pierre... I didn't think to look in the same parts book that I have.......doh!
From the list......what's FIRST JOBS- STAMPED 3840383/SUP 3858401 and AFTER JOBS - STAMPED 3779553 mean ?
When I was at GM Parts meetings way back when, I was taught that first jobs were built prior to Jan 1st (i.e. on a 63 Pontiac, built before Jan 1 1963) and after jobs were built from Jan 1 to end of the production year. However, this is definitely NOT always true from what I've seen.
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1966 Strato Chief 2 door, 427 4 speed, 45,000 original miles
1966 Grande Parisienne, 396 1 of 23 factory air cars
If you just drive it on the street, a 10.5" is fine.
If you want to drive it hard, put in an 11". If you go 11", as Dave mentioned the starter is different. And I don't think you can fit the 11" setup in anything but the 621 bellhousing, but once again, I could be wrong.
My two cents.
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1966 Strato Chief 2 door, 427 4 speed, 45,000 original miles
1966 Grande Parisienne, 396 1 of 23 factory air cars
63 up were all 153 tooth closed bottom aluminum for a small block and the starter mounts to the block.
62 back were open bottom cast iron (except for some every rare aluminum ones for a 62 409, expensive) and 168 tooth and had a starter mount on the BH. I like the open bottom (can be handy for lots of reasons) and the BH starter mount, the starter and the flywheel align themselves, no need for shims. One of those cast iron ones would likely do the trick, but you'd need a new starter. Check the casting numbers and year on anything you buy, there are some truck ones with a bigger hole for the transmission input shaft.
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63 Parisienne sport coupe (The Big GTO), black, maroon interior, 409 4 speed; former owner of a 59 El Camino, 63 Corvette SWC, 62 Chev Bel Air SC. 1963- Pontiac top selling car in Canada
Mahone Bay, NS Still not old enough to need an automatic