18 or 23 spline?

Chris&Adam · Post by **Chris&Adam** » Wed Mar 26, 08 9:18 pm

Needing a new clutch for my roadrunner. Its got a 440 and an A-833 4speed manual. Before I order my new clutch, can the number of splines on the main drive pinion be determined by 'decoding' any of the cast or stamped numbers on the box or will I need to drop the box off?

Thanks

Mick70RR · Post by **Mick70RR** » Wed Mar 26, 08 10:06 pm

The casting number on the bellhousing is what you need.
Counting the number of teeth on the flywheel will back it up.
Have a look here, it should tell you what you have.

http://www.brewersperformance.com/products.asp?id=28

Cannonball · Post by **Cannonball** » Thu Mar 27, 08 11:01 pm

i would think its a 23 spline, if yer bellhsg is cast iron 11"clutch, ally "10.5 clutch, hemi/sixpacks got the 18 spline,

the bishop · Post by **the bishop** » Thu Mar 27, 08 11:11 pm

My 69 is a 11" 23 spline but the only sure way to tell is to drop the box

Chris&Adam · Post by **Chris&Adam** » Mon Mar 31, 08 1:34 pm

We dropped the box and it is a 23 spline. Now need new clutch kit!!!! Anyone got any preferences? Street/strip use.

Pete · Post by **Pete** » Mon Mar 31, 08 1:43 pm

A torqueflight

I used Centreforce clutches in both 18 & 23 spline configuration. Light pedal throw; you have to shorten the travel to stop them "turning inside out". A block under the carpet will do this.

Not really up to it on the strip in my opinion.........and expensive.