Re: Project: Turbo 250
 

Engine: 91.5 12 valve fully rebuilt balanced within 1 gram, stock bore, stock compression with the .010 head gasket,pistons fully coated ceramic top moly side ARP everything
Cam: Hamilton 182/214 with matching valve train with Smith bros push rods (was told by hamilton, good for 100 # of boost up to 5k rpm)
Fuel: New old stock VE pump with 3800 spring, THD Pin, M&H timing spacer, 6x.013 VCO Bosch injectors from THD, 2nd gen fuel pump upgrade from THD, stock high pressure fuel line diameter
Trans: NV4500 fully built and cryo treated by midwest trans
Clutch: American Powertrain highpressure ceramic single disk rated for 850 lb ft at 20k lbs towing
Exhaust: 4" 409 stainless mandrel bent turbo back straight pipe
It will be running compound turbos of a HE351CW wastegate bored to 1" secondary over a S475 with 1.15 turbine housing primary

Re: Project: Turbo 250
 

Motor/ trans is capable of putting some serious power to the ground (over 1000hp with the propane injection secondarys) but will be keeping it de-tuned to keep it clean and see what kind of fuel economy I can get. Going to shoot for around 400hp and 850 lb ft of torque

Re: Project: Turbo 250
 

Is it done yet? :lol: Sounds like a great powerplant!

Re: Project: Turbo 250
 

That’s gonna be stout!
What about the 4bt wasn’t working for you? Not enough power?

Re: Project: Turbo 250
 

I'm thinking of getting the Curt 14082 hitch for my 70 LWB 1/2t GMC. I will be using the sport bumper.

Do you have any pics with the flip up license plate and receiver hitch installed??

My bed is off right now (and also the bumper/brackets). It would be easier to install the hitch now, but I think it would be better for alignment if I wait til bed/bumper is installed.

You had to drill the 6 holes correct? Also, was the hardware provided sufficient?

Lastly, where did you get the flip up license plate holder?

Thanks,


Beautiful truck btw

Re: Project: Turbo 250
 

Job well done!!!
I've always thought a Cummins would be cool in a street driven pickup. A friend had one in a 3/4 ton. He took out the original 6.2.