ok im in the need of a new clutch so goin to a dd sb finally, my question is on sb's site they dont list for ours can i use a 94-97 hydro upgrade kit or what will i gain with goin to the 98-02 adjustable hydros? also will i need to clearance the bell houseing any for a dd? thanks rw

 

Hi Randy.

SBC doesn't have anything in the way of hydro's for a 1st gen.

Use the adjustable hydro's.

I just went threw clutch hydro's when I installed the G56 a while back.

 

so if i get the 2nd gen adjustable how long should it take to put it in i have 3 days to do this and can i use this same kit if i do a tranny swap?does the bell housing adapter need to be trimed any if i get it for the getrag? good news i dont have the clutch saftey thingy i took it off for when im at the yard its easier to start from the passenger side when i roll up

 

Now on those upgrade hydro's. Don't think of them as a upgrade. The clutch slave cylinder has the same casting number and bore size. The M/C has the same bore size and travel. The only thing you could think of as an upgrade is the flex line instead of the hard plastic line.

If your not having any problems with your current hydro's. They should work with the DD. The slave cylinder push rod from the adjustable kits is 1" longer than a getrag push rod is. So you would be reusing your old rod anyway.

I can't say what is need on the DD install. I don't know.

If you go with a trans swap later on. If its a NV4500 the stock getrag setup would work. If you go to a NV5600 or a G56. You need the longer hydro hose the upgrade kits has. These two trans runs the slave cylinder mounted differently.

You would need to remove the clevis end. Rethread the rod full length. The adjustable push rod needs to be shortened 1.3750". Other than that its bolt in just like the orginal hydro's would be.

 

If your stock hydros are still good they will work fine with that clutch. If you feel the need to replace them just get a new factory one. It comes pre-bled and ready to go. Takes 15 minutes to replace. Peter at south bend said the first gen hydros are a very stout unit and do not need to be upgraded. I did not need to do any trimming anywhere to get my DD in but it was close. Peter is working on some new stuff for the dual disc clutches. He is also doing a new setup with a special throw out bearing to get it to fit better in the 1st gen. Should be a sweet setup.

Aaron

 

We did not have any clearance issues with the SBC DD. I guess some bellhousings may rub a little, if so get out the die grinder. We did put on a braided stainless line just for insurance.

I cannot promise these fittings will work, but I am pretty sure they will:

http://www.speedwaymotors.com/LS1-an...ing,25017.html

If you got two of them and a -3 line, you would have "upgraded hydros".

 

sweet thanks guys!the stock hydros leak i have to fill it up 1ce a week and i can get both the 3250dd and hydros out the door for 1300 from a buddy of mine in enid ok. thats also good news bout the clutch fitment i just want to put it in and go,i have to keep in mind its a work truck(so the guys at the yard tell me) that needs 400+hp and a dd clutch that weight 13k ill take pics and let yall know when i get it. thanks alot again