I would think converting it to newer ABS would be overly complicated. Arent the newer ABS systems controlled differently?

Don't forget that if you convert to vacuum brakes that you will lose the ability to launch under boost.  My Lumina has it's original vacuum brakes and as soon as I see boost it's starts creeping away no matter how hard I push the brakes.  I plan on converting to vacuum brakes on my TGP, but I have a 5 speed so my launch sucks anyways.   :evil:

There's always the vacuum canisters that summit sells.  People with lopey cams use them to store vacuum for the brakes.

If your check valve in your brake booster is good...you shouldn't loose any vacume in the brake booster...or see boost inside of the brake booster. My brakes have no problem. They stop on a dime. You could intall two check valves in the line to help it.

I notice that some Bonis have hydro brake boosters. Would those work?..They have ABS.

On the ECM..if people are inclined to deal with seprate units (besides the 3bar thing)...like eprom emulator, wbo2 unit, aldl scanner, bin editor....then yea...a aftermarket unit will do...but don't give the benifits of the stock unit.

The only thing the 4t60 and the 700r4(vett?)might share are the clutches. If you could swap the sun gears and clutch pack carriers...Freaking awsome...but I don't think its possible...at least without some time and skills.

The clutch packs are my biggest concern. That's what I keep burining up.

Quote from: maximageThe clutch packs are my biggest concern. That's what I keep burining up.

Yea I have worn out my 4th or 5th set. 2nd and  3rd shutters when shifting and 3rd  gear is slipping again. Red Eagle makes a 7 disc clutch set for second. Don't know if they have any of the others. I guess I am going to try these.

THM 440-T4 (4T60) AND 4T60-E
POWERPACK? SECOND CLUTCH PACK  


CONTENTS OF THIS CLUTCH KIT INCLUDE THE FOLLOWING:
(7) FRICTIONS (.060") #62702A, (7) STEELS (.067") #62703A,
(1) STANDARD STEEL (.077") #62713K TO ADJUST CLEARANCE


This kit will correct, prevent, and reduce the complaints of premature clutch burnup or distress caused by: under capacity, low pump pressure / volume while cruising in 4th with TCC engaged and the converter in coupling mode. Remember, the second clutch is applied in 2nd, 3rd, and 4th very similar to a forward clutch used in other powertrain systems. The kit contents also offers additional durability with the later model, quicker responding engines even though Torque Management is used on some models.

Jud

Looks like that could help. My biggest issue was high speed cruising in OD. I've actually locked a couple of trannies in OD.

I looked at the Raybestos catalog...and they have Graphitic clutches for the 4th clutch pack. The look promissing. Has anyone tried those? I looked at the 4th on the 4t60 and theres no room for larger packs and little room for more clutches. They are the size of the direct clutches(3rd) on my 3t40...which fried..and it had four for some reason. If raysbestos could make the Blue friction clutches for fourth that would be awsome,,even the Red Devil clutches. But the Graphitic like I said look like the best. How ever..I do think they have the Red Devils for the other clutch packs...I would think they also make the Blue ones for custom orders. Their bands are the best...so they say...they have Kevlar lining. They supply stock band for GM, Merce, and someone else?. So I would think they know their sh!t.  Heck..the make better friction meterial for the torque converters lock up clutch.

As far as poor shifting..you might have problems with your valve body. When I rebuild my transmission...Im going to run a transmission pressure guage along with a temp sensor. Bypassing the radiator and running the oil cooler by itself is said to cool down the transmission more.

Quote from: maximageI would think converting it to newer ABS would be overly complicated. Arent the newer ABS systems controlled differently?

i dont see why we couldnt, mabye Jeff M could fab up a chip to be able to controll it, there just computer controlled, and not nitrogen (why the hell did GM even bother with such expsensive, complex crap? hmm, how hard is it to have the computer to make the brakes cycle so they dont lock?)

Makes you wish we had the same PMIII the Grand natinals guys have. What gets me is they intergrated the ABS and the PMIII together instead of having the dam ABS having its own housing.

i think GM liked the Grand nationals better, lol

Quote from: TurboGTUMakes you wish we had the same PMIII the Grand natinals guys have. What gets me is they intergrated the ABS and the PMIII together instead of having the dam ABS having its own housing.

Es la una problema.  You lose your ABS in a GN, you lose brakes altogether.

I just bought a gt2876r turbo from precision turbo.  the salesman walked me through the charts and confirmed that with the 76 trim turbine wheel and .86 A/R turbine housing coupled with the 48 trim .70 A/R compressor i could push 400 hp to the crank with ease.  all i needed was a set of 37#/hr injectors, 3-bar map sensor, and programming to accomodate the set-up.  i will end up with a 2.5 press. ratio and a flow capacity of 40 lb/min

How much? those are like over a grand a peice arent they?

When you get it to run on a 3 bar, shoot me a .bin.   :laugh:  ;)