C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

looking at possible engine build

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Old Jan 20, 2011 | 09:24 PM
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Default looking at possible engine build

the question I have is, I have a 350 engine out of a 76 model truck and was thinking about using the short block to build a 383 for my 84 vette but I'm not sure if I can use the block?
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Old Jan 20, 2011 | 09:30 PM
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You should be able to use that block. The SBC engine has not changed for the most part in years. BUT.....you would be better off in finding a roller block to build up your engine. Or look at Summit. They have a GM short block 383 that has many more parts than their short block ZZ4.

If you PM me with your email address, I will send you a word document that I put together when I built my ZZ4 short block. This shows all the part numbers and costs that I incurred.
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Old Jan 20, 2011 | 09:42 PM
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what do you mean by a roller block, dragracr502@aol.com
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Old Jan 20, 2011 | 09:45 PM
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He means a block that is designed to accept factory roller cam and lifters. They are usually a 1 piece rear main seal motor yours is two but you can get around that.

Another option is (look up Durango Boy in the C3 tech section) he has a pdf on using the V6 roller lifter setup that will work in your block with minimal mods. uses a .5 shorter pushrod. Unless youre going real radical dont see why you couldnt do that.

Just something to think about.
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Old Jan 20, 2011 | 09:48 PM
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A roller block is set up to use hydraulic roller lifters and a cam set up for the same. You will get more power from this setup. You can convert the block you have to to this but it will cost you for the machining. There are three bosses in the center of the lifter valley that have to be drilled and tapped. You would have to purchase the special lifters that don't allow the lifter to twist in the holes and the "spider spring" that holds these in place.

EMAIL sent with attached file.

Last edited by John A. Marker; Jan 20, 2011 at 09:56 PM.
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Old Jan 20, 2011 | 09:52 PM
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ok then what year of block should I be looking at
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Old Jan 20, 2011 | 10:03 PM
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Block options to look for are 87 and up, truck or passanger car engine.

It is good to to do a lot of research before jumping in. I suggest you read Vader86's web site as a place to start.
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Old Jan 20, 2011 | 10:25 PM
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Earlier (70's blocks) can be easily converted to run a roller cam. I used to have one.
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Old Jan 20, 2011 | 10:37 PM
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thanks to you all, I'm sure I'll have more questions, I'm just glad I have ppl to ask
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