: 94 gmc



cwjfarms
11-09-2007, 01:00 PM
Hello all, I am looking for help? I am looking at installing a 4bt in 94 gmc 4x4 3/4 5spd to replace 6.5? Ok let's have the low down on this good and bad?Truck will be use around farm very little towing mostly for run around and feeding. Ok what all will I need from start to finish??? Don't hold back I need all the help i can get!! My 5spd.(nv4500) is in good shape and would like to use it. Thanks Barry

tndonor
11-09-2007, 01:09 PM
Well first off all I would recommend searching and reading the sticky threads, thats what they are for.

The look through the build up sections for similar vehicles. There are several thread related to parts needed, time, ,oney, etc.

Your NV4500 will not work with the dodge style bellhousing, it was the post 95 NV4500 where chevy and dodge were the same. However you have the low 6.34 (iIRC) odd bellhousing that some crawlers will pay top dollar for as they are getting rare.

Other than that welcome and have fun/

Where in TN are you located?

cwjfarms
11-10-2007, 05:06 PM
Thanks for the reply. Live up around Dale hollow lake,if you know where that is? Will a motor out of a p van with (4spd.sm465) adapter mate up to my nv4500?Thanks Barry

BobS
11-10-2007, 05:27 PM
The SM465 bellhousing to transmission bolt pattern ended in 1992. The NV4500 used by GM from 1993 ▬ 1995 had it's own unique bolt pattern. Finding a 4BT with the SM465 is somewhat uncommon which makes that particular parts set on the pricey side.

cwjfarms
11-10-2007, 05:39 PM
Sound like I need a trans. and all? Is my best bet is go with a dodge nv4500? May look at auto 400 or 475? Thanks Barry

tndonor
11-10-2007, 06:09 PM
If you dont need overdrive, a TH400/475 will do fine.

Nv4500 are nice too, I run one of those.

rbarnett
11-10-2007, 07:58 PM
Sound like I need a trans. and all? Is my best bet is go with a dodge nv4500? May look at auto 400 or 475? Thanks Barry

Don't you already have the bellhousing that was originally on your 94? That bellhousing should bolt right up to the chevy style adapter that is on the 4bt. The flywheel and clutch from the 4bt should also work. The mechanicals are basically "bolt in". You will just have to fab up engine mounts, exhaust, and the other basics. I did a Suburban with a NV4500 and everything bolted right up.
Bob B.

cwjfarms
11-10-2007, 08:02 PM
So is there away to use my nv4500(94),would like to have low gear?What are you all useing for motor mounts,are you making them or what?What is the best set up? Thanks Barry

dieselwrangler
11-11-2007, 02:58 AM
my did did this conversion in his 1954 ford pickup he used a 4BT from a big trencher its 85HP then he had a buddy who bought a breadvan for the engine t oput in his case tractor so he sold the trans adaptor out of it it had a SM 465 my dad bought the trans and adaptor and traded the chevy trans for a Ford Np435 then bougght a chevy NV4500 and it bolted right up however he modified it some not because it didnt work but because he wanted t otake the tilt out of the engine trans combo so he bought a lakewood I think bellhousing and redrilled where the bell bolts to the trans and strighted the trans up he did have t oturn down the input shft coller mounting egee some or grind the bell to fit the larger NV4500 bearing retainer he also got rid of the HYD slave cylinder and converted it to linkage he just modified a throwout bearing arm for that and it all works off of the stock 1954 pedels the truck gets driven alot!!! like i said it has a 85HP 4BT chevy NV4500 9" rear with 3.00gears and about a 31" tire it has a tilt fiberglass hood and a big 4" flat black stack it gets 30MPG consistantly and has done a best of 37MPG and the worst tank ever was 25MPG!!! today he towed a S185 Bobcat with it on a trailer that weighs 3500 lbs the bobcat another 5,000 and he said it had no trouble pulling that he side it pulled in Overdrive too but EGT rose to past 1000 the max boost ive ever seen on it is 10PSI it is a H1C not sure on turbine size tho its bigger like the bread vans we have it also is lacking a aniroid valve I think this is why the higher Egts? cause it can dump alot of fuel in before any boost plust it only gets 10psi of boost

cwjfarms
11-11-2007, 07:35 AM
Ok have found a p30 van setup with a 465 4spd. This adapter should bolt up to my nv4500(94) will I use my clutch or one for p30 van? Will clutch linkage work?How bad does oil pan have to be cut? Man this is going to be fun,Can't wait to start! THANKS for all the help keep it coming, it a big help!! The more I find out now less trouble I will have when starting!!Thanks Barry

BobS
11-11-2007, 07:52 AM
Review this thread before you buy anything:
http://4btswaps.com/forum/showthread.php?t=841

Notice two important areas of that thread:
Not all GM chassis came with GM SM465 transmissions & pictures of SM465's.
The difference in size & weight of the SM465/Cummins flywheel.
There has been some past confusion in telling the differences between the Borg Warner T-19 Ford bolt pattern and the GM SM465.

cwjfarms
11-11-2007, 08:23 AM
Thanks Bobs will keep reading and looking. P30 does have sm465,I am researching if nv4500 will bolt up and what clutch will work? Thanks Barry

dieselwrangler
11-11-2007, 11:10 AM
as far as I know my dad used the SM465 flywheel and clutch new clutch of course its like 12"clutch I think?

cwjfarms
11-11-2007, 11:40 AM
form what i have read and check on my nv4500 will bolt up to 465 adapter. A 12in. clutch will work I thing linkage will have to be work out? Thanks Barry

95Z28A4
11-11-2007, 12:05 PM
my did did this conversion in his 1954 ford pickup he used a 4BT from a big trencher its 85HP then he had a buddy who bought a breadvan for the engine t oput in his case tractor so he sold the trans adaptor out of it it had a SM 465 my dad bought the trans and adaptor and traded the chevy trans for a Ford Np435 then bougght a chevy NV4500 and it bolted right up however he modified it some not because it didnt work but because he wanted t otake the tilt out of the engine trans combo so he bought a lakewood I think bellhousing and redrilled where the bell bolts to the trans and strighted the trans up he did have t oturn down the input shft coller mounting egee some or grind the bell to fit the larger NV4500 bearing retainer he also got rid of the HYD slave cylinder and converted it to linkage he just modified a throwout bearing arm for that and it all works off of the stock 1954 pedels the truck gets driven alot!!! like i said it has a 85HP 4BT chevy NV4500 9" rear with 3.00gears and about a 31" tire it has a tilt fiberglass hood and a big 4" flat black stack it gets 30MPG consistantly and has done a best of 37MPG and the worst tank ever was 25MPG!!! today he towed a S185 Bobcat with it on a trailer that weighs 3500 lbs the bobcat another 5,000 and he said it had no trouble pulling that he side it pulled in Overdrive too but EGT rose to past 1000 the max boost ive ever seen on it is 10PSI it is a H1C not sure on turbine size tho its bigger like the bread vans we have it also is lacking a aniroid valve I think this is why the higher Egts? cause it can dump alot of fuel in before any boost plust it only gets 10psi of boost

Please try using a little punctuation. I'm not asking for anything complicated; an occasional period between thoughts would be a big help.

rbarnett
11-11-2007, 06:05 PM
form what i have read and check on my nv4500 will bolt up to 465 adapter. A 12in. clutch will work I thing linkage will have to be work out? Thanks Barry

Do you have the bellhousing that was originally in the truck, and bolted to the 6.5? If so, you don't need any other adapter, except the one that came on the back of the 4BT. That is if you have the chevy style adapter. Your bellhousing will simply bolt to that adapter. You use the Cummins flywheel, obviousy, and if the clutch is still good and it is a 12" chevy style with the 1 1/8" by 10 spline, you are good to go. You will end up with the engine tilted aproximately 10 degrees to the passenger side. The tilt is designed into the adapter that bolts to the 4BT. Your clutch linkage is hydraulic, and need no modification. Just fab your mounts so that the trasmission is still level. This is one of the easier swaps.
Bob B.

cwjfarms
11-11-2007, 07:32 PM
well have a set back miss hold deal (4 bt cummins, 858 cpl, 105 hp. 65,000 miles on cummins recon. Chevy bellhousing with 4 speed manual trans. Both are in great working condition. Came out of a P30 stepvan. Included are a radiator, hoses, hydroboost, intake hoses and exhaust pipe) By $25 well will keep looking? Can fine motor but not many adapter and fly wheels and help on this?? Barry

dieselfidder
12-09-2007, 12:09 PM
Hey.. i have a 4bt with a chevy adapter, flywheel and 4spd man. PM me if you are interested.

ncovey
12-10-2007, 06:24 PM
Hey.. i have a 4bt with a chevy adapter, flywheel and 4spd man. PM me if you are interested.

Give up on your conversion?-Nicholas

dieselfidder
12-11-2007, 08:21 AM
Nope... i found a whole nother setup really cheap so i picked it up just in case i needed some parts but everything is going ok so far. So now i have extra stuff to get rid of! No way am i giving up.. i am about a week away from getting the motor in for the finial fit and fire it up :)