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Old 11-20-2002, 11:13 AM
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Thumbs up How to build a 302

Hi I just recently bought a 67 Camaro and It has
no engine or transmition and ive been surfing
seeing what i could put in it I think it would
be cool to make a 302 but I have no Idea how
could anyone tell the all the parts I need thanks

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Old 11-20-2002, 12:17 PM
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**scratching head**
Why would you want a 302 in a camaro?
At the minimum, I'd say build up a 305 and stick that in there.
The standard 350 is a cheap enough engine and will provide you with an even bigger smile when you punch the go button.

-=NOTE: the above statement reflects my personal opinion, I'm not saying there is anything wrong with the 302=-

As far as rebuilding, grab a few books on overhauling engines and read through them to get a grasp on what you are doing.
~Michael

[ November 20, 2002: Message edited by: lozinit ]</p>
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Old 11-20-2002, 02:32 PM
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302 Chevy motors run good. They are just a 4" bore block (302-327-350) with a 3" stroke crankshaft.

Just go ahead and get a 350. Easier. More power. You can buy/build one for the same or less than the 302 and have 48 more cubic inches.

Cubic Inches wins races.......
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Old 11-20-2002, 03:49 PM
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The Chevy 302's HP is a mystery as to how much HP it has. In the beginning of the Z/28 in 67' everyone was told it had 290HP. I Know iy was more than that just by talking and reading "The Secrets of the Camaro". My Geuss as to how much HP it has is about 375. I've heard anywhere from 290-400. NOW how to make one is pretty simple get a 327 and put in a 283 crank in it. This will give you a 4 inch bore and a 3 inch stroke I believe. If there are any corrections someone would like to make please do.

P.S. I also have a 67' Camaro. (327 4brl) I thought about putting in a 302 b/c it was the original Z/28 motor. The problem is getting it to stay together. MAKE FOR CERTAIN YOU HAVE A GUY THAT CAN BALANCE YOUR ENGINE! Read up on the internet to that helped me make my decision.
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Old 11-20-2002, 05:54 PM
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I was always under the assumption that a 283 block that has the pan rails with slight notch( not all 283 blocks have this)with a small journal 327crank and the right set of heads high compression pistons and you should have a quick 302 a friend of mine did this years ago it was a little monster! please correct me if i'm rong somebody
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Old 11-20-2002, 07:04 PM
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[quote]Originally posted by tworotten4u2:
<strong> please correct me if i'm rong somebody</strong><hr></blockquote>

You are WRONG!

A 283 block with a 327 crank makes a 307.
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Old 11-21-2002, 07:29 AM
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you both are wrong a 283 block with a 327 small journal carnk makes 301 cubic inch this is a good stick shift motor also so is the 302 my camaro has been a race car since 70 and it had a nasty 302 with a doug nash 5 speed and 6:14 gears and went 10:40s it used to be run in southeren ohio said wild bill red white blue
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Old 11-21-2002, 11:01 AM
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no deuce roadster is right a 283 block with 327 crank is 307. a 283 that is bored .125 over is a 301.
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Old 11-21-2002, 11:54 AM
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Deuce was correct. The original 302 was an early 327 with a 283 crank. You could make one from a 350 block but you would need bearing spacers.
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Old 11-21-2002, 12:17 PM
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I find it kind of funny how some people don't know that Chevy made a 302, and they think your talking about a ford, I find it really funny.
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Old 11-21-2002, 01:54 PM
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one says a 283 block/327 crank; the other a 327 block/283 crank. but so far nobodies said it was a 351C w/a 289 crank. hardieharhar
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Old 11-21-2002, 02:35 PM
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Cubic Inches

Bore divided by 2

square the results, multiply by 3.14159

Multiply by stroke of crankshaft

Multiply by number of cylinders

327 bore 4.00 div by 2 = 2

2 squared is 4 X 3.14159 =12.566371

12.566371 X 283 crankshaft (3") =37.699

37.699 X 8 =301.592 cubic inches (or 302)
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Old 11-21-2002, 02:37 PM
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[quote]Originally posted by engineczar:
<strong>Deuce was correct. The original 302 was an early 327 with a 283 crank. You could make one from a 350 block but you would need bearing spacers.</strong><hr></blockquote>

Or use a 68 - 69 Z28 302 cranktshaft



[ November 21, 2002: Message edited by: Deuce Roadster ]</p>
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Old 11-21-2002, 07:53 PM
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[quote]Originally posted by 67' BoleroCam:
<strong>The Chevy 302's HP is a mystery as to how much HP it has. In the beginning of the Z/28 in 67' everyone was told it had 290HP. I Know iy was more than that just by talking and reading "The Secrets of the Camaro". My Geuss as to how much HP it has is about 375. I've heard anywhere from 290-400. NOW how to make one is pretty simple get a 327 and put in a 283 crank in it. This will give you a 4 inch bore and a 3 inch stroke I believe. If there are any corrections someone would like to make please do.

P.S. I also have a 67' Camaro. (327 4brl) I thought about putting in a 302 b/c it was the original Z/28 motor. The problem is getting it to stay together. MAKE FOR CERTAIN YOU HAVE A GUY THAT CAN BALANCE YOUR ENGINE! Read up on the internet to that helped me make my decision.</strong><hr></blockquote>

I had a 67 Z28 that someone stole from me after 6 -8 months of ownership. Took the insurance money a got a 69 RS Z28. 302's are overated by those who have NEVER had one. They run good but when a 327 with the same equipment (heads,intake,cam ect) came along, 327"s were faster. Same for the 350. Comparable equiped, 350's are faster.

CUBIC INCHES WIN RACES....

When a good BigBlock pulled up alongside, you got outran. A early Camaro witha 302 cannot outrun a early Camaro with a 427. Sorry that's the way it is and the way it was from someone who was THERE.

So I went a bought a 70 Chevelle with the LS6. (that's a 454 450 HP). No Fear..... long before the term became popular. :p :p
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Old 11-21-2002, 08:19 PM
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The only reason GM went to all the trouble of a 302 was to go racing. They were great race engines once the only original things left were the block and heads and they weren't recognizable. If you want or need a 9,000 RPM engine to develop a realistic 350 horsepower, then by all means jump in a time warp and head back to the sixties. Deuce Roadster is right, these little motors didn't have the torque to cut it on the street. It was embarrassing. Two carburetors, idled at 1000 (on a good day), valve clatter so bad you couldn't hear the radio if the windows were down and you were gonna get shut down. Every night. Got rid of a "K" Mustang to get the Camaro and kicked myself daily until it was gone.
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