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Old 02-20-2009, 08:07 AM
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Chevy 350 Whats Next to boost performance?

I have a 1983 Chevy Silverado with a 350 in it. This is what ive done so far: Holley 4 bbl. edelbrock performer intake manifold. headers. new cam. and a rebuilt turbo 350 transmission. So whats next? i am on a buget so dont tell me to put a supercharger on it. Thanks

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Old 02-20-2009, 08:11 AM
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nitrous kit?
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Old 02-20-2009, 12:03 PM
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Better heads. The 83 engine is low compression, so cam changes are kinda pointless until you get that compression up. Vortecs maybe?
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Old 02-20-2009, 12:28 PM
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i'd recomend vortec heads.
just so you know, you'll need a different intake if you go with vortecs
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Old 02-20-2009, 05:30 PM
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Did the truck come with a computer controlled distributor? There was the ones that came with a ECI which was a standard HEI with vac and mechanical advance which you can still use but you`ll need to check the mechanical advance, if it hasn`t been checked you can bet it`s either frozen or the bushings are worn out. You can go to the parts store and get a advance curve kit. Add spiral core plug wires and route them correctly, get a brass terminal distributor cap and rotor. Don`t buy anything with the name Accel on it. Add a K&N air filter. A better set of heads would be a step in the right direction as well. Since you already have a edelbrock intake you can look for a set of aftermarket replacement heads with smaller chambers that won`t break the bank. Gears would also be a massive improvement as these trucks came with tall tires and really high gears. If you can wind it up to 50 mph in first gear you need lower gears. a set of 3.55`s would be just right.
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Old 02-21-2009, 09:45 AM
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What do you have for an exhaust after the headers ? If you have a vaccum secondary carb have you tried softer springs to make sure it is opening fully ? Is your fuel system keeping up with the engine's requirements ? I have found that it doen't take a whole lot of engine to outpace most stock fuel systems. What do you know about the rest of the engine as far as compression, heads camshaft specs etc. ? What do you want the engine to do ?
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Old 02-23-2009, 08:24 AM
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After the headers theres a couple feet of pipe then a set of glasspacks. and thats it
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Old 02-23-2009, 08:32 AM
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About my gearing... im pretty sure its 373. at least thats what i think.
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Old 02-23-2009, 10:18 AM
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most 83's came with 3:08 no more than 3:23 rearend gears. Most 3:73's came in 4x4's(in most cases). The next thng I would do is find out for sure what gears you have. That will make a substantial increase in power.
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