Diesel to gas

K20-85-8600GVWRod

Junior Member
Location
New jersey
I have read brief statments on different Chevy boards about taking a diesel block and converting it to a gas engine. I have 50K miles on a GM crate engine , but I am considering restoring my truck ( original owner) and want more power. Having a HD emissions truck there are no cats, dual exhaust from the factory, 410 rears and a TH400 tranny. Thanks for your imput , Rod
 

plowking35

2000 Club Member
Location
SE CT
I dont understand what your question is. Do you currently have a diesel crate engine in the truck? Is your crate engine a gasser, and you are thinking that a diesel engine block converted to gas, will make you more hp?
If you have a diesel now, add a turbo and free exhaust that will gain you some hp.
If not sell the diesel and find a 454 gas. The diesels are under 400 ci, and I dont see a way to convert it to gas fuel delivery. The heads do not have any area for spark plugs, plus the intakes are suited for a carb.
You can get good money for a late model 6.5 diesel engine, that will offset the cost of a BB.
Dino
 
OP
K

K20-85-8600GVWRod

Junior Member
Location
New jersey
Wow, thought i was the only one here a couple days before Xmas. I am running the standard GM 350 right now. I think 200hp with about 375 ft/lbs torgue. My understanding is that you take an old 350 ci olds diesel, keep the block, crank and pistons. Add gas heads, intake and carb and whatever else. I am not a mechanic. The diesel block gives you a bullet proof motor that can be built into a really bad motor. thanks, rod
 

Pelican

2000 Club Member
K20, Welcome to Plowsite!:drinkup:

I agree with Dino, the cheapest way to get more power is more cubic inches. If you're going to swap motors, why not throw in a Rat? You'll never get the torque from the mouse that is standard equipment with the big block without spending gobs of money, and then you get a reliability factor if you get too radical.
 

plowking35

2000 Club Member
Location
SE CT
The swap would be furthe complicated by the fact that the diesel you are looking at is an olds, and has a different block to bellhousing bolt pattern than a Chevy/GMC.
Either build that 350, which any slightly modified 350 should more than enough grunt for a truck, or get a BB. I have a stock BB in my 89 K-3500, and that has so much low end compared to a SB.
Dino
 

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