looking at clutch kits for my t56 swap and im in need of a twin disc for holding capacity.the engine is a 400 based block.

im looking at this kit because of the 168 tooth flywheel

http://www.jegs.com/i/Ram-Clutches/7...ductId=2091958


or do i need this kit?

http://www.jegs.com/i/Ram-Clutches/7...ductId=2091958

or am i looking at the wrong kits?

 

Unless you have changed the rotating assembly balance arrangement , your 400 based engine requires a unique EXTERNAL balance flywheel
both you have linked are for reg 2 pce RMS ( non-400 ) NEUTRAL balance engines

 

one is 168 tooth flywheel vs 153. standard flywheel/starter combo for 400s is 168 tooth. im not sure if only the 153 will work and if these clutch kits are what i should be looking at for the engine/trans swap?

 

Doesn't mean that is the only flywheel option

 

I dont want the weights on it, the engine is neutral balanced! And most 400 blocks only have offset starter holes which unless you have an aftermarket starter IS a 168 flywheel.

 

Most? It's one additional bolt hole. We don't know if that's added on yours or not.

Secondly and more importantly, there isn't just "a T56 clutch."

There are multiple input shaft lengths and multiple bellhousing setups to use which work behind a 400.

Does yours have the 3rd starter bolt hole? Which bellhousing and T56 are you plannin on using? Those matter. You also didn't mention the neutral balance until it was pointed out by someone else. Kind of hard to suggest you're looking at "the wrong kits" without all this information, preferably in the first post.

 

all i wanted to know was what tooth flywheel to use... and no my block does not a third starter hole. again most 400 blocks do not have the third hole. ive got 2 406s and 2 bare 400 blocks. all of them are staggered only.

its the stock lt1 bellhousing, 26 spline input shaft. no need to over react. just wasnt sure if you knew about the starter holes.

thanks for your input. i will find a neutral balance 400 one and just use a mcleod rxt twin disc.

 

That bellhousing doesn't accomodate the starter for a 168 flywheel. So far, I'd say you should go with a 153 and drill the starter hole (using a starter as a template to get it located right) and counterbore it so the correct bolt indexes the starter location.

"I will just use an RXT twin"

Well, no you won't; at least with the LT1 bellhousing & trans. It's somewhat shallow in there. There isn't extra room for clutch & flywheel assemblies above and beyond the depth of a stock third gen throwout bearing & 10.5" clutch setup.

And there's no room for a hyd. throwout bearing setup; BTDT.

McLeod does make their Street Twin on a 153 flywheel for the stock pull clutch setup. You will of course, need to specify a neutral balance 1985-down flywheel.

You're welcome.

 

Of course I knew that from the extensive info you gave out in your 1st post where you specified yours was not a std configuration 400
NOT

ESP doesn't work well over the net

Nope
Once it doesn't have the 400 balance weights on it is is just a plain jane 2 pce RMS flywheel (in the size of your choosing)

 

if i seen in someones signature that the engine has 14:1 compression, it is safe to say its not a stock configuration. as stated was only asking for flywheel size.

64032-00-07

this is the part number of the mcleod kit i need

 

What does the CR have to do with the crankshaft balance?
Plenty of worked 400 based engines with the stock crank balance ; even some 383 stroker kits come with that setup.

You specifically stated 400 ci ( like it was something special ) so then it is reasonable for a reader to ASSUME
you are talking about a 400 BALANCE unless otherwise specified.
I even asked you about the balance setup in my 1st post and you made no mention of it when you replied 4 min later

As yours is now neutral balanced ,when it comes to flywheel fitment there is nothing 400 about it any more so why bother even mentioning it ????
It is just another reg 2 pce RMS engine with the flywheel choice limited by what will fit in the bellhousing and what starter you can use

 

Thanks for letting us know.