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Old 05-02-2004, 10:37 AM
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chevy 283/327

I have a 1967 283 I was wondering is it possible to take a small journal 327 crank and put into the 283 block without have to notch the block and what would that make new CID, also I would be using teh standard 283 bore.

thanks In Advance
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Old 05-02-2004, 10:40 AM
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I don`t think you`d have to notch the block, The combination of the two engines created 307 cubic inches in 1968.
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Old 05-02-2004, 09:05 PM
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I saw in a book that there's interference at the bottom of the bore, & that some of the water jackets go almost all the way to the bottom so you can't notch them enough.
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Old 05-02-2004, 09:14 PM
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Take the 283 crank and put it in the 327 block, and make a 301....................will rev like a bast*rd.
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Old 05-02-2004, 09:25 PM
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costly pistons tho.
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Old 05-03-2004, 03:08 AM
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Some 283 blocks won't accept the early (small journal) 327 cranks, but some do. You read right - if there's crank counterweight to block interference then move onto a different 283 block. You cannot grind the crank or block for clearance or, like you said, you'll hit water and throw the crank out of balance. Remember if you go ahead you'll need to get 307 pistons or otherwise the 283 slugs would protrude past the block decks. 283's are more popular than 307's due to 307's never being offered in a performance version. But increasing the stroke on your 283 would certainly be a step in the right direction. A 307 would have better HP potential than a 305 due the 307's larger bore size and shorter stroke.
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Old 05-03-2004, 11:48 PM
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And even the "cheap" rebuilder 307 pistons that are .013-.020" too short (Silvolite & Sealed Power, respectively) are expensive. Speed Pro forged ones were almost $400 last time I checked, but the height is correct. Mine's staying a 283.
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Old 05-04-2004, 12:09 AM
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Get the block sonic checked. Some of the early blocks were thick enough to go 0.100" over. There's your rpm and valve clearance. Screw torque, 283's were meant to rev. Hard.

Larry
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Old 05-04-2004, 04:19 AM
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Yes, that theory is true and it's the same argument with the 327 against the 350. Smaller stroke = more RPM = more HP. But the choice is unanimous with the 350 being the first choice for most rodders. It's torque that get's the car rolling and plants you hard into the seat. Tell those who've gone to a 383 stroker they've made a mistake and see what they do. Carrol Shelby once said HP wins sales, torque wins races.
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Old 05-04-2004, 08:33 PM
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True, if you have a 350 to start with. I have a 406 in my Nova and wouldn't trade it for anything short of a 500" or better big block. The man's got a 283, making the bores big enough to accomodate 1.94/1.50 valves without excessive shrouding is a step in the right direction. It'll never make decent low speed torque compared to a 350 so why not make it scream?

Larry
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Old 05-05-2004, 07:50 AM
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I currently have a 1964 283 with the double hump heads on it with 2.02 intakes with a roller setup. etc. I got this motor for free with about 8000 miles on it from a friend of mine. I have been toying with the idea of getting a small journal 327 block and swapping my parts into it. what would I need for rods and pistons for this setup?
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Old 05-06-2004, 07:12 AM
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Well not much going by the previous replies. On the bottom end the only parts that should be different would be the crank and the pistons. The rods are interchangeable. But jimfulco says that getting 307 flat tops that go up to the deck are expensive. You'll have to do some cost evaluations. Might not be worth it unless you can score parts at the right price.
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Old 05-06-2004, 05:46 PM
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Thanx Guys all the input has really helped me. I am going to put this enine into a Pickup it was given to me. I have rebuilt a few 350's but this is my first 283. I am not looking for anything to radical just something to get the ole 91 Siverado moving and to keep the wife out of my Galaxie. All I have is the Short block right now I am thinking about going with and edlebrok performer package for this engine and a mild street cam. any recommendations will be appreciated.
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