92 GT Motor into 70 w/ 4spd toploader

[mmorningstar]

okay posting this question for a buddy, I'm currently a fox guy, so I figured I would ask the guru's in the old school tech section.

My buddy is swapping a 92 302GT motor into his 70, he is staying carbed, etc, just switching motors for a new(er) rebuilt one. The car is a 1970 Mustang with a 4spd toploader, it's a 302 car so the shaft is the right size, and it looks like it will bolt up, but his dilemma is the clutch. The stock 1970 is a 164 tooth flywheel and the 92 motor is a 157 tooth flywheel. So what clutch does he need? And will he need anything else?

Thanks!
Matt

 

[Rusty67]

He needs a 164 tooth flywheel, however the imballance is not 50oz on the old motor so he will either need to get another flywheel or have a good machine shop change the imballance on his existing flywheel. Also, there is no provision on the 5.0 motors for the mechanical clutch linkage. I think NPD sells an adaptor bracket for this.

 

[bnickel]

i'm not even sure if anyone makes a 164t flywheel for the 50 oz imbalance but the i've never really looked either. best bet is probably gonna be Mcleod or Hayes.

 

[rbohm]

there are 164 tooth 50oz balance factor flywheels available. your friend may have to change the clutch disc though to fit the input shaft of the top loader.

 

[65ShelbyClone]

1.) My buddy is swapping a 92 302GT motor into his 70, he is staying carbed, etc, just switching motors for a new(er) rebuilt one. The car is a 1970 Mustang with a 4spd toploader, it's a 302 car so the shaft is the right size, and it looks like it will bolt up, but his dilemma is the clutch. The stock 1970 is a 164 tooth flywheel and the 92 motor is a 157 tooth flywheel. So what clutch does he need?

2.) And will he need anything else?

1.) He can use a 10.5 or 11" clutch with the 164t flywheel. In order to use a 157t flywheel(for whatever reason), a 157t-specific bellhousing is needed to put the starter in the right place. If the flywheel is a stock 164t early style, a 3-finger clutch can be used. I'm relatively sure the T5s and Toploaders use the same disk in case a diaphragm clutch is needed.

2.) Yup, he'll also need one of these:

It's that little bracket hanging off the scattershield where the stoc z-bar pivot used to be. 5.0s blocks don't have that provision on the block itself like the earlier engines.

 

[mmorningstar]

thanks so much for the input guys, it helped us out a lot as far as pointing us in the right direction. It is very appreciated, especially to the guy that attached the pics. thanks again! -Matt