Basically I want to do a straight forward GM conversion and seek help from anyone that may have done the swap. I have a 1995 Chevy 3500HD with 6.5TD and 5 speed NV4500.

Also have a one piece rear seal small block with Tune Port Injection ready to go.

1) Will the SBC bolt into the current 3500HD 6.5TD frame (motor) mounts

2) Will a 454 bellhousing (circa 1986) accept the NV4500 input shaft housing diameter (ie a T5 won't).

3) What portions of the 6.5TD clutch setup can I use with the SBC, (have SBC flywheel)..can I use the clutch, pressure plate "and the hydraulic throw out bearing with the old syle bellhousing".

4) What misc challenges did you run into wiring up a gas engine in a diesel cab.

Will be using a Camaro speed density (730) ECM and intend to re-pin the wires under the dash into the Camaro ECM.

I assume the that NV4500 has a 40 pulse VSS, just like the smaller NV3500? Do have a MEMCAL programmed for the 5sp NV3500.

Thanks

I was needing to know the same thing i have the same setup 6.5, nv4500 wanting to go to sbc and I wanted to get as much info as I can before I get into it

I was needing to know the same thing i have the same setup 6.5, nv4500 wanting to go to sbc and I wanted to get as much info as I can before I get into it

The only thing I learned so far is that I need a SBC/BBC bellhousing (which I have Part #460486) and can use the clutch, pressure plate and hydraulic throw out bearing from the 6.5TD. Will also need a SBC flywheel (which I have also).

If you use the new style motor mounts (shell looking type) on the SBC they will mate up with the 6.5TD rubber frame mounts.

In my case I plan on installing a 350 tune port engine, so I'll have a little more wiring to figure out. Plan on installing a 1227730 ECM (tune port) and repinning it for the OBD1 sensors. Will run a 2 speed electric fan.

May just mount a gasoline saddle tank since the diesel tank doesn't have an internal fuel pump (ie lift pump instead)..but could run an inline also.

FYI: I just started a web page dedicated to the 3500HD truck www.3500HD.com (http://www.3500HD.com) and plan to document the change over once I do it.

this is what i"ve got. two 95 chevy trucks ,one is a3500 dually long bed ex cab man 4500 6.5td , with broke crankshaft .other one is step side 5.7 man trans ,went foot deep around tele pole ,totaled. runs perf i should be able to pull 6.5 harness out and install 5.7 harness w/ecm and use the clutch disk from 6.5 with 4500 trans same bellhousings sound right so far?

this is what i"ve got. two 95 chevy trucks ,one is a3500 dually long bed ex cab man 4500 6.5td , with broke crankshaft .other one is step side 5.7 man trans ,went foot deep around tele pole ,totaled. runs perf i should be able to pull 6.5 harness out and install 5.7 harness w/ecm and use the clutch disk from 6.5 with 4500 trans same bellhousings sound right so far?


10-4..and since my last post I learned that the 6.5TD bellhousing will bolt up to the gas 5.7. I just need a flywheel for a one piece rear main small block (ie externally balanced).

Other consideration: the 5.7 fuel tank, tank wiring, instrument cluster?

Don't have a lot of info there yet, and plan to document the 6.5TD to 5.7 swap on my 3500HD web site: www.3500HD.com (http://www.3500HD.com)

Is '95 OBD 1 or 2? If it's 1 the instrument cluster should work, but you definitely have the wrong tach for a gas engine. I'd go get a cluster out of a gas truck. As far as the fuel tank, again, I'd go to the wrecker and get one out of a gas truck with the pump and all.

Is '95 OBD 1 or 2? If it's 1 the instrument cluster should work, but you definitely have the wrong tach for a gas engine. I'd go get a cluster out of a gas truck. As far as the fuel tank, again, I'd go to the wrecker and get one out of a gas truck with the pump and all.


I am trying locate a complete 88-95 (OBD1) Chevy/GMC truck with gas engine to do a body, wiring, bumper, gas tank swap onto the 3500HD chassis. It's been tough locating a regular cab truck with solid cab corners..but I'm in no hurry.

i've got a 94 1500 sle cab and bed , frame is tweeked in the front , no fenders or hood . it's a start .

i've got a 94 1500 sle cab and bed , frame is tweeked in the front , no fenders or hood . it's a start .

If you are selling it, California is just too far away. I do have (2) cabs for sale or trade. One is 1998 1500 4X4 extended cab (mint condition) and the other a 1995 3500HD "diesel" reg cab (very solid). You can see them by visiting the link in my signature below.

Im not a h8r its neet to see folks using thier brains. Im really trying to understand swapping from a 6.5 TDI to a SBC. specially in a 3500 Maybe a 454 just cause your a gas hawg like me and love the gas BBC rumble. Hell I had a solid roller 454 on N2o in my 72 blazer for over 10 years before the 6.6 swap. Just thinking out loud :cool:

Im not a h8r its neet to see folks using thier brains. Im really trying to understand swapping from a 6.5 TDI to a SBC. specially in a 3500 Maybe a 454 just cause your a gas hawg like me and love the gas BBC rumble. Hell I had a solid roller 454 on N2o in my 72 blazer for over 10 years before the 6.6 swap. Just thinking out loud :cool:

Just building a Toy, I have a barn full of tune port injection (TPI) setups & small blocks. The TPI engines are really strong pullers and pretty good on gas, (& just look gnarly) ..so I just want one in the truck.

Kinda like putting a SBC in a 32 Ford hotrod, the Ford small block is a great engine...but the SBC is more common, more parts available and just cheaper to build.

Now if I was building a serious work truck..then I would put in my extra 454, but I would rather put that in my 33 Chevy!

6.5's are hard to find with low hours and are not cheap ,454's are like a tap on your pocket .both are perfect for the 3500 dually ,the 95 5.7 is small ,maybe to small for A 3500 I'll soon know. all thats left is the fuel oops gas tank & pump harness .I have a 6.5 core for sale broke crankshaft ,webs are ?able cheap,I'm in CA bay area.and yes diesel rules .