NV 4500 behind a 6.2 [Archive] - Diesel Place : Chevrolet and GMC Diesel Truck Forums

: NV 4500 behind a 6.2


Tahoe Joe
04-30-2005, 04:18 AM
I'm running into some trouble with getting this set-up adapted over to my project truck. I bought Advance Adapters bellhousing to use this with my stock linkage (Jeep) and while it will work with a SBC, there is no way to make it work with a 6.2 due to starter clearance issues. I thought of using a stock 6.2 bellhousing (hydraulic clutch) but where I am running into problems with that is the master cylinder clearing the power booster and fuse block. There is just not a lot of room in this truck ('76 Jeep J series truck). Soooooooo, any ideas? I definitely want to run the NV 4500 and not a 700 r4, etc. I tow a lot and need a manual transmission. I thought of changing the case on my TH400 (from AMC to Chevy) but then again, I want/need the overdrive and I do not want the power loss of an automatic.

:help:

odee
05-01-2005, 12:55 PM
when gathering info of my nv4500 swap into my 80 model chevy dually I searched alot for parts and info. I used a factory bellhousing from the 92 and up style gm truck with the hydro part on the pass side. The tranny will not bolt to the old style hydro bellhousing without a plate type adapter. I was told that some of the bread/chip type vans,p30 chassis may have had a mech type linkage in them. Never got to verify it for sure though. Good luck with the swap.

D.Camilleri
05-01-2005, 01:41 PM
I also used the 92 stock gm bell housing from a 6.5 and all related parts including the slave cylinder and the master cylinder. The master is very small so, I would imagine that you could make room for it. You could also look into using the bell housing from say a 97 6.5 it uses a hydraulic through out bearing so there is no clearance issues with the front drive line. You would have to use the front bearing retainer of that year to make it work. Good luck.:grd:

FLChevy
05-02-2005, 10:32 PM
You could use a GM hydroboost brake booster to free up some room for a master cylinder. They take up alot less space on the firewall than a vacuum booster.
I used a Wilwood 3/4" bore master that worked perfect with my 96 up GM style internal slave.

There are some cast iron bell housings from early 70's Chevy trucks that have enough clearance for a 6.2 starter nose.. They are completely open at the bottom. usually witih Advance Adapters 1" adapter plate, you have to use a Dodge input shaft (1" longer) on your NV4500 or just get the Dodge version NV4500.
.

odee
05-02-2005, 10:36 PM
someone told me that the trannys that had the internal hydro throwout bearing uses a different bolt pattern on the face of the tranny don't know if it is true or not.

D.Camilleri
05-03-2005, 12:30 AM
All of the nvg 4500 front bolt pattern are the same. I used an early 1970 vintage bell housing on my first 6.2 conversion, into a 1970 Blazer, that was 20 years ago! The starter did fit, but not until I did some heavy trimming of the bell housing. The problem with this idea is that the bolt pattern for an nvg 4500 is not the same as for an sm 465, the ears are quite a bit wider.;)

Tahoe Joe
05-04-2005, 01:34 AM
I actually found a solution to this problem today. I was thumbing through the Summit catalog and noticed that Powermaster makes a gear reduction starter for the 6.2 (Summit part # PWM 9052 for anyone that may be interested.) I decided to make the drive down to Summit and checked it out and it does not have a nose cone like most of the other Powermaster gear reduction starters. I got home with it, and wow! It clears the Advance Adapters bellhousing that I just bought, so my clutch problems (hydraulic, linkage, room, etc, etc.) are now solved! The only drawback....$309.95 plus tax but it did save me a lot of hassle of trying to come up with a linkage and the sort to get a hydraulic clutch in the truck, so I think it's worth it in the long run. Now, if it cranks the engine over OK, then we're set.

D.Camilleri
05-04-2005, 11:14 AM
:cool2: