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engine performance mods

  
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engine performance mods

 
90gmc377 90gmc377
New User | Posts: 2 | Joined: 08/09
Posted: 08/04/09
01:53 PM

I currently have a 90 gmc 3/4 ton with a 4 speed trans. I'm in the prosses of building a 377 chevy small block. And i was wondering which would be better for a mud truck a turbo charger or a super charger?  

 
heavymetalk20 heavymetalk20
User | Posts: 187 | Joined: 12/08
Posted: 08/04/09
07:21 PM

if your gonna be runnin in the higher rpm's then a turbo wld since it has to build boost but for off the line power a supercharger would be best. i figured for a mud truck you would build a 383 or 400 instead of a 377 most people build those for street/strip s10's its a high winding motor.  

 
90gmc377 90gmc377
New User | Posts: 2 | Joined: 08/09
Posted: 08/05/09
12:12 PM

i had thought of a 383 first. but a 350 bored out would weakin the block cause you have to bore it out. i could also make 650-675 hp and about 800 something torque out of a 400 small block with out wicking the block. also a 383 is better for the strip just cause the weaker block and your not runnin high rpms for a long time like you would be in the mud. one more thing the turbo might suck up water, and the 3 inch belt might slip off the blower. thats my delima. but thanks for the input.  

 
GM1tonOfFun GM1tonOfFun
User | Posts: 223 | Joined: 11/07
Posted: 08/05/09
10:43 PM

It would only be a .030" over bore.  Unless the coolant side of your cylinders are very rusty that is safe.  You get the big increase in displacement with the longer stroke.  With your dilemma over a turbo or super charger, maybe consider NOS.  

 

Toyota Tacoma Research
Toyota Tacoma Being one of the most popular cars in its class, the Toyota Tacoma offers good performance and quality. The V6 standard engine in the Tacoma gives you 236 horsepower with an estimated 16 mpg. It comes with comparable warranty coverage to other vehicles in its class. You may also be interested in the Ford Ranger and the Jeep Liberty.