New member here

[JPalmer81]

Hey all, new member here with a 1988 Chevy V30 Crew with the 6.2l Diesel NA and TH400.



There she is, looking for some NA performance suggestions, yes I said NA. Wanna try to squeeze all the power I can out of it in its original form, i know, i know i am crazy.

I recognize some of ya'lls names from other forums, so you already know what I'm up to. Seems like the 6.2 enthusiasts are a small group of people :hihi:

Plans for the truck are as follows:
-4" Suspension Lift
-33x12.5 TSL's on old school slotted mags, awesome I know :agreed:
-Eventually a swap to a manual with a OD
-Gasket match port and polish
-Stan's Headers with 3" Dual exhaust with "H" pipe, exiting in front of the rear wheel
-4" Custom cold air intake
-Home made WMI, haven't worked out all the details yet
-Looking into a cam regrind, not for sure though, still researching
-3.73 gears all around
-Rebuilt IP, suggestions on any good companies out there in PacNW?

There ya have it, like I said i am open to suggestions from ya'll. I would love to tear this whole engine down and rebuild it from the ground up, but don't know if I am going to be able to swing that. Let me know what ya'll think!

 

[3500GMC]

Welcome to TTS.

As mentioned, your plans for WMI will help.. Or propane injection. On yer own there!. Typical intake and exhaust mods apply also. Ditch the EGR bulk if equipped, etc. Turn up the IP.

Sooner or later, somebody will try and talk you into a turbocharger..

 

[JPalmer81]

Welcome to TTS.

As mentioned, your plans for WMI will net the most 'bang for the buck' for N/A.. Or propane injection. On yer own there!. Typical intake and exhaust mods apply also. Ditch the EGR bulk if equipped, etc.

Sooner or later, somebody will try and talk you into a turbocharger..

Truck is equipped with "J" code engine, so know EGR bull crap.

I am expecting someone just thinking I am insane for wanting to fix up an NA motor, I get it wherever I talk about it, no big D :hihi:

You have any first hand experiences with the propane injection? did it work for you, alot of people I talk to didn't like it.

Really kinda interested in the cam regrind thing, wondering if it would be worth it for a NA motor?

 

[btfarm]

Welcome to The Truck Stop! :welcome2:

If there are any 'pro' NA 6.2 enthusiasts around, you'll find them right here...

 

[THEFERMANATOR]

Best thing to do is live at sea level, or below if you can find a place. A cam regrind will help some probably, but most regrinds are going to be for turbo engines.

 

[JPalmer81]

Would a regrind for a turbo be a bad thing in an NA motor? Think the same principles apply, trying to hold valves open for more intake/exhaust? Not much of a cam stud though....

 

[THEFERMANATOR]

Not really, turbo engines have a different cam profile need than a N/A engine does. With a turbo engine you can benefit from the positive intake pressure(Boost) whereas a NA engine must rely totally on the engine to pull in air.

 

[3500GMC]

You have any first hand experiences with the propane injection? did it work for you, alot of people I talk to didn't like it.

Nope.. But I hear it's a BLAST if you get it Right... or Wrong..! :hihi:

Cam alterations are a tricky deal for the diesel engines. It's all about cylinder pressure. Too much overlap (like a hi-perf gasser) and you'll most likely bleed off too much cylinder pressure at low RPM, it would be a SLUG. Let alone trying to get it started in the morning. Need that cylinder pressure.

A bump in governor RPM would help get more velocity for a N/A diesel. Conversely, it's exponentially harder on parts...

Worth it? That's not for me to decide.

 

[just a number]

:welcome5: to TTS. nice looking rig you got there. looks like we have a new land yacht member. :rof:

as far as power upgrades go, you can turn up the pump, not sure about the propane or WMI. never played with either.

the air intake will help alot. there are a ton of restrictions in the factory setup.

 

[tanman_2006]

Welcome to THE Truck Stop! I think you'll find more info here than on the OB when it comes to 6.2/6.5 diesel.

 

[JPalmer81]

Not really, turbo engines have a different cam profile need than a N/A engine does. With a turbo engine you can benefit from the positive intake pressure(Boost) whereas a NA engine must rely totally on the engine to pull in air.

Bummer, I sent an email to Delta Cams to see if they had any profiles for the 6.2 NA, we shall see and I will let ya'll know

Nope.. But I hear it's a BLAST if you get it Right... or Wrong..! :hihi:

Cam alterations are a tricky deal for the diesel engines. It's all about cylinder pressure. Too much overlap (like a hi-perf gasser) and you'll most likely bleed off too much cylinder pressure at low RPM, it would be a SLUG. Let alone trying to get it started in the morning. Need that cylinder pressure.

A bump in governor RPM would help get more velocity for a N/A diesel. Conversely, it's exponentially harder on parts...

Worth it? That's not for me to decide.

I looked into the propane deal and it sounded promising, but kinda averted my attention to WMI. I am not a chemist, so I have no idea why either one would work better, other than the fact that the water cools and makes the air more dense coming in the combustion. If I do it it will be all trial and error..

:welcome5: to TTS. nice looking rig you got there. looks like we have a new land yacht member. :rof:

as far as power upgrades go, you can turn up the pump, not sure about the propane or WMI. never played with either.

the air intake will help alot. there are a ton of restrictions in the factory setup.

I agree. I am deployed right now but get home in like 3 weeks and the first thing I am doing is sending my IP to get rebuilt and while that getting rebuilt,i am adding the bigger exhaust and cold air intake to it. The pump guy said he will turn it up when he is rebuilding it so the truck should feel totally different when I get that pump back on.

Welcome to THE Truck Stop! I think you'll find more info here than on the OB when it comes to 6.2/6.5 diesel.

Thanks tanman, I am just digging in on all these forums and trying to get all the info I can. I am finding out that the 6.2 enthusiast circle is not very big cause I have seen alot of the guys are on the "other" forums too. Its all good, I am just here as a sponge to suck up all the info I can, and then give back when I can.

 

[ak diesel driver]

welcome fellow AKer

 

[JPalmer81]

welcome fellow AKer

Thanks!

 

[635]

I do know Heath has a new cam for the NA 6.2. I will be adding one to my NA 6.2 going in my 81 Chev 1/2 short box 2wd.

You will not get much use from propane, without a turbo. Or you will have to use a manual control valve to adjust the propane flow. Propane systems work best with boost. Mine was set to come on a 2 pounds of boost with just a whif of propane and to have 2 CFM at 20 pounds of boost. And the same thing goes for WMI, you really won't be building enough intake air temperature to benefit from the expense of WMI. But you will be building exhaust temperature when you turn the pump, even just a little, on a NA 6.2.

Add a Spectre dual snorkle air cleaner to you intake and run the snorkles to the holes in the core support. That will give you a cooler outside air flow to the intake. In Alaska you should have plenty of cold air!

You may want to add 2 stroke oil to your fuel with every fuel up. This will help keep your pump lubed internally.

 

[JPalmer81]

I do know Heath has a new cam for the NA 6.2. I will be adding one to my NA 6.2 going in my 81 Chev 1/2 short box 2wd.

You will not get much use from propane, without a turbo. Or you will have to use a manual control valve to adjust the propane flow. Propane systems work best with boost. Mine was set to come on a 2 pounds of boost with just a whif of propane and to have 2 CFM at 20 pounds of boost. And the same thing goes for WMI, you really won't be building enough intake air temperature to benefit from the expense of WMI. But you will be building exhaust temperature when you turn the pump, even just a little, on a NA 6.2.

Add a Spectre dual snorkle air cleaner to you intake and run the snorkles to the holes in the core support. That will give you a cooler outside air flow to the intake. In Alaska you should have plenty of cold air!

You may want to add 2 stroke oil to your fuel with every fuel up. This will help keep your pump lubed internally.

Thanks 635. I am going with a big cone filter and hopefully 5" round into the intake, but might be only 4" round, we'll see when i get home. Been planning this project for quite a few months now, and when i get home it will probably all change anyways!

Never heard of the 2 stroke oil in the fuel, I put an additive at every fill up in it as it is, kleen diesel or diesel kleen or something like that i think, can't remember, been a few months since I have been home.

I plan on running my pump as hot as i can get it without blowing black smoke every time i touch the pedal, wouldn't mind seeing a puff of black smoke when i really stomped on it though....:hihi: