December 05, 2025 8:28 am

Author Topic: Adapting a small block chev to 39 toploader  (Read 8358 times)

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Offline tracywiedrich

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Adapting a small block chev to 39 toploader
« on: January 10, 2013 2:00 am »
Does anybody on here know what clutch disc and what diameter flywheel  and pressure plate you need to adapt a 39 toploader to a sbc? I know I have any article but cant seem to remember which mag it was in...oldtimers kickin in you know...thanks boyz

Offline Eyeball

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Re: Adapting a small block chev to 39 toploader
« Reply #1 on: January 10, 2013 3:27 am »
This is from the Speedway site.

Aside from what is included in your adapter kit, the adapter is designed to use the '49-'53 10”
Mercury pressure plate with the B&B pattern and the 10” clutch Ford disk. The stock throwout bearing
from your transmission is used.


The engine@s stock flywheel (168 tooth ring gear with 10.5” clutch pattern) and the 1955-1962 flange
mount starter or the later block-mount starter for the 168 tooth flywheel (offset bolts holes) are used. If
youdo not have any of the above items, contact Speedway Motor@s, Inc. as we should be able to supply
any of these parts.
Check that all of the following parts are in the package and free of damage:
1 Cast aluminum adapter
1 Pilot bearing adapter (see note #5).
Torque values: 7/16-20 crankshaft bolts—55-65 ft-lbs
3/8-16 bellhousing bolts—35 ft-lbs
soaken wet shoes and winkled fingers...
hours and hours
inch at a time...

henryj1951 HAMB

Offline tracywiedrich

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Re: Adapting a small block chev to 39 toploader
« Reply #2 on: January 10, 2013 3:35 pm »
Thanks Tim, I did a search on the Hamb but it was kinda sketchy. I never thought of looking on the Speedway site.

Offline Kustom Dallas

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Re: Adapting a small block chev to 39 toploader
« Reply #3 on: January 10, 2013 3:47 pm »
.....with a little help from a ay dapter kit.....
"You own a car nobody wants." Serious
"The beer I had for breakfast wasn't bad so I had one more for dessert" Johnny Cash

Offline Tom

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Re: Adapting a small block chev to 39 toploader
« Reply #4 on: January 14, 2013 4:49 pm »
.....with a little help from a ay dapter kit.....

Which they just happen to sell ::)
"A rat rod is a hot rod with poor workmanship". Roger S.

Offline tracywiedrich

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Re: Adapting a small block chev to 39 toploader
« Reply #5 on: January 14, 2013 5:27 pm »
I got the bell adapter, found it north of Bismarck a few years back, I believe its a speed gems but not sure anymore....