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Old 04-11-2002, 08:57 PM
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crate chevy 302?

is there a company out there that sells any long block or complete chevy 302 crate motors? i've done some half arsed looking but have come up empty. i want to stay away with used 302's cause they're going to be pushing it with regards to age and wear. your help would be greatly appreicated, thanks.

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Old 04-11-2002, 10:18 PM
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To my knowlege Chevrolet never made a 302, 302's are a ford engine. now if your talking about 5.0 letre engines, chevrolet classification for a 5.0 is a 305.
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Old 04-11-2002, 10:52 PM
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1967 302 Chevy's used a 327 block and a 283 crank (3.0 inch stroke X 4.0 inch bore small journal crank).

1968-69 302 Chevy's used a 350 block and a 283 crank (3.0 inch stroke X 4.0 inch bore, big journal crank).

All had 5.7 inch rods I beleive.

All these engines were produced for homologation in the Trans-am series to compete against the 302 Ford Boss engines that dominated at the time.

All 283 cranks are forged so you can use any one to create your engine, just make sure you get the right size journal block to suit. You can get spacers to fit a small journal crank into a big journal block or have the crank ground to fit, I don't recommend either. Why you would want to destroke a perfectly good 350 or 327 is beyond me? Are you trying to get into a specific class of racing?

They don't sell 302 crate motors because everyone wants the bigger cubes. Here's a site with a good breakdown of Chevy engines.

<a href="http://www.v8s-series.freeservers.com/sbc.htm" target="_blank">http://www.v8s-series.freeservers.com/sbc.htm</a>
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Old 04-11-2002, 11:26 PM
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chevys make 305's not 302s ford makes them and 351s
chevy makes 350s
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Old 04-11-2002, 11:58 PM
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it's like 4 jaw says, this size engine was made for trans am racing,i believe cubes had to be under 310 cubes. you had to be there i guess, they were screamers. made 67 to 69, factory balanced, blueprinted, some dynoed at 375 horse. i was 17 in 69, hard core race fan, i dreamed of a 302 in my 57 chev.
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Old 04-12-2002, 12:01 AM
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Throughout all my reading and overhering I never knew chevrolet made a 302, thanks for the new information 4 jaw, and dinger
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Old 04-12-2002, 12:26 AM
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thanks for the feedback. it might be interesting to build one up with some good power numbers, race it then tell the looser in was a 302!!! just my goofy dream i guess. for all of those who didn't know they chevy made a 302 well they did and they revved hard. come on i'm 18 and i new that. all smiles!
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Old 04-12-2002, 01:52 AM
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69 Z-28, 302, 4spd., my dream car. 4jaw, ford made its 302 after chevy, I beleive 69 or so. Any combination of 3" stroke and 4" bore will make a 302. But I think originals had large diameter mains, nitrited crank, 4 bolt blocl, 2.02" intake valves, 1.6" exhaust valves, aluminum dual plane intake, and Holley 750 cfm carb. If you build this get a car with weight over the rear tires, put in some low gears, a 5 or 6spd trans, and have some fun. If it hooks up at all you will break parts. I drag raced with small engines for years. There is not much that can compare to leaving the starting line at 11,000rpm, and then rowing through 4 gears (clutch assisted)in 10 secounds. Yep I am old, but I still remember.
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Old 04-12-2002, 08:10 AM
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ford started making 302's in 1968, Boss 302s in 1969 and 1970
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Old 04-12-2002, 08:24 AM
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If you want a GM 302, why don't you get a GMC 302 staight six??? j/k
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Old 04-12-2002, 03:07 PM
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Hey everybody, Chevy did make a 302 and from what I've heard it was the motor sought after back 67-69 camaro's, ford makes a 302 also, not a prayer
against chevy's 302,a rare factory motor. If you can get a hold on a used factory chevy 302, I'd do it in a heart beat.Watch your casting dates
67-69 only I believe.Or watch for a Tonawanda
built chevy motor,327-350's. Tonawanda built some
pretty strong power plants
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Old 04-12-2002, 05:15 PM
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One thing I always try to do is leave room for error when posting 'cause there's a lot of room for error in the world of cars. Halloweenking at least said "to the best of my knowledge" allowing room for error. But Ford definately did not make it's 302 after Chevy, it had nothing to do with Chevy. In 67 Ford decided to bump the 289W to 302 cubic inches for the 68 model year. I think in 68 Ford used the 302 and 289 version, but that's not important. I personally just think it's a good idea to try and not give specifics unless you're sure.

[ April 12, 2002: Message edited by: dmorris1200 ]</p>
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Old 04-12-2002, 06:17 PM
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Your are all correct, the Chevy was produced first and it was Ford who decided to jump into Trans-am racing by building the 302 Boss. Sorry I got my "facts" all backwards, hey I'm not perfect!

One of my favourite sounds is a short stroke small block with low gears going through the gears and hitting 8 grand at every shift.
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Old 04-12-2002, 07:13 PM
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I was alive and well when both the Boss 302 Ford Mustang and the 302 Chevy Z-28 Camaro came on the scene brand new. It would really be hard to say which was the best or the baddest, they both would run like a scalded dawg..right off the show room. I have been a party to a '68 Z-28 many nights in my teen age years, which belonged to my best friend, but got my butt kicked driving a '68 383 Charger by a '69 Boss 302....not just a little either...I mean KICKED. The Ford and Chevy were both bad boys in their day. PACO
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Old 04-12-2002, 07:22 PM
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I was alive and well when both the Boss 302 Ford Mustang and the 302 Chevy Z-28 Camaro came on the scene brand new. It would really be hard to say which was the best or the baddest, they both would run like a scalded dawg..right off the show room. I have been a party to a '68 Z-28 many nights in my teen age years, which belonged to my best friend, but got my butt kicked driving a '68 383 Charger by a '69 Boss 302....not just a little either...I mean KICKED. The Ford and Chevy were both bad boys in their day. PACO
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