Simple question!

Got an early 70's sbc recently for a rebuild. Bought a th350 tranny to mate, but see the torque converter has 3 bolt flanges on it and the flex-plate has 6. Measured the distance between the 3 bolt holes and is in no way going to work! Around 9 3/8" or so.
Man I'm used to much older motors so tell me, since the flex plate is the cheaper of the two, where do I look for one to use?
Bare with me if this is an ignorant question please.

 

napa,ect. has em,the 6 hole one may have two differant bolt patterns.I am surprised it dosent fit the converter

 

Should bolt up, rotate it & see if they align.I think all flywheels are 6 bolt for this reason.
jimV

 

Jimv is correct - it will bolt up and the bolt distances are purposeful - balance and all that rot.

dj

 

Chevy flexplates all have 6 holes , 3 each on two different size circles, usually 3 are round and 3 are oval.

 

My 454 uses an externally balanced 6 hole flexplate. The converter has 6 threaded blocks.

 

Yeah .... try again, it should fit

 

Make sure it's mounted the right way. Ask me how I know. After the engine trans was in the car............

 

What they said............Crankshafts have the same bolt pattern, whether autotomatic or standard installation......................

 

You guys Rock! Went out this morning and sure enough there are 2 different bolt patterns! Thanks very much! Love this board!