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Old 01-21-2006, 05:53 PM
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is a chevy 302 worth building

was the chevy 302 a good engine?im thinking of building one to put into a s10and what gears would i need to keep the rpm up in the power band.

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Old 01-21-2006, 06:02 PM
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What do the Mustang 302 guys run for gears?
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Old 01-21-2006, 06:13 PM
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302

i think 3:55 but the chevy 302 can hold alot more rpm
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Old 01-21-2006, 06:13 PM
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onovakind67, that is a poor comparison. A Ford 302 is a completely different engine design, and has different power output and bands. A Chevy 302 is a racing engine derived from the 327. It only makes power, albeit gobbs of it, at high rpm. The Ford motor, however, can be built to be a stump puller.

An S-10 is light, which is crucial for this motor. I would not recommend using an auto with a Chevy 302 just because you need to keep the RPM's waaayy up there all the time to make power. Idealy you would want a close ratio 4 or 5sp and steep gears like 4.11 at min. That 302 was put in the Camaro Z28 with just that kind of drivetrain.

A 302 Ford was designed for pickup trucks, and lots of torque on the low end, so you can run a automatic with taller gears to get the same pull.
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Old 01-21-2006, 06:14 PM
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302

i was planning on putting a 4 sppeed behind it
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Old 01-21-2006, 06:16 PM
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302

hey nova man you an amc guy to i have a 401 and a 360 amc good low end power
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Old 01-21-2006, 06:49 PM
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78novaman,
How is a 302 Ford a completely different engine design? Last I looked they 302 Chevy and the 302 Ford had the same bore and stroke, same OHV design, 2 valves per cylinder, etc. What's so different about them? The 302 SBC was certainly a fine factory motor in its day, but just because you put a 283 crank in a 327 block doesn't launch you into another universe. The 283 was a good truck motor in its day, as was the 327, and putting the crank out of one truck motor into another one doesn't make a race motor.
We get the Z-28 guys on our chassis dyno who are caught up in the 'mystique' of a 302 SBC, expecting to pull some really cool high rpm numbers and end up falling far short of their expectations. The 302 Ford guys are making equal numbers, and none of them are doing much over 6000 rpm's.
You can put the power band wherever you want with any engine, just because it's a SBC with a 3" stroke and a 4" bore doesn't mean you need to rev it to 7000 rpm to see some power.
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Old 01-21-2006, 07:23 PM
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Chevy 302

Onovakind
I think you have you chevy small blocks crossed up. The 283 and the 327 were not truck motors at all. They both had high RPM capabilities and were not the same as a Ford 302. The Ford had different heads and smaller valves. The exhaust system on a Ford was very small. Both the Chevy and the Ford can rev when set up right The chevy was a high performance motor from the start (302) and was set up to run hard. The boss 302 Ford wasnt the same design as the standard 302 so a comparison would not be fair. The question was about how thye Chevy would run, and if set up properly(gearing and engine) will make a stout performer.
Steve
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Old 01-21-2006, 09:26 PM
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Hmmm....

I don't really know if you are being fair, either. The chevy 302 was a destroked 327 for trans-am racing, the exact same purpose as the ford "boss" motor. To compare those two is not really even fair, as the canted valve heads on the Boss are much superior. I also don't know the production #'s on the chevy 302, but they don't seem to be real common as well. Let's not forget the 289 Hi-Po as well, that was a motor that came straight from the factory, ready to rev, including those tubular cast iron headers....

All of the 283, 302, and 327 motors are fine performers, and in stock form definitely have the edge over the more common and pedestrian Ford 302. The stock Ford motors like the Boss and 289 Hi-po that could give these motors a run where pretty rare, and saying that, when worked, the Ford's and Chevy are damn near equivalent.

With that said, go ahead and build it. Should make a fine street motor.

Cheers,
Andy
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Old 01-21-2006, 09:46 PM
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What do you mean the 283 isn't a truck motor? It was the base V-8 in all Chevy trucks from about 1957 to 1968. The 327 was used in trucks from 66 to 68. The 331" SBC in our road racer started its life in a motor home chassis.
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Old 01-21-2006, 10:35 PM
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Quote:
Originally Posted by fearsomefairmont

The chevy 302 was a destroked 327 for trans-am racing....
The first 302 chevy engines were .125 over bored 283's. A rather popular engine in the Sixties. When GM decided to put the Camaro into the Trans Am series they used the 327 block for its stronger cylinder walls. The crank bearing journals and rod lengths were the same. Some of the original engines actually used 283 spec pistons until 302 spec parts could be manufactured.
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Old 01-21-2006, 10:41 PM
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The 302 was developed to meet the 5 liter requirements of SCCA and other racing organizations. While the 302 Chevy was an awesome engine, the only substitute for cubic inches is rectangular dollars. Plus, a longer stroke engine will give you a more versatile street engine with a broader torque band. I think you would be happier with a 350 or a 383.
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Old 01-21-2006, 11:01 PM
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whats all this sh##t got to do whith his ?
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Old 01-21-2006, 11:49 PM
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Quote:
Originally Posted by onovakind67
What do you mean the 283 isn't a truck motor? It was the base V-8 in all Chevy trucks from about 1957 to 1968. The 327 was used in trucks from 66 to 68. The 331" SBC in our road racer started its life in a motor home chassis.
the 283 and its little brother, the 265 were also standard engines in the Chevy cars from 55-57 and beyond. when someone says 327, i automatically think of a Corvette.
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Old 01-22-2006, 03:36 AM
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Quote:
Originally Posted by denny1977
was the chevy 302 a good engine?im thinking of building one to put into a s10and what gears would i need to keep the rpm up in the power band.
Yep, I thought the 302 was a great engine. Always a lot of fun. I had most of my exposure to that motor in a 69 Z-28 that weighed way over 3000 #s and I thought it "ate" for a street car. In terms of gears, which tranny, overdrive, tire size, intended use, weight? With regard to power band, your cam grinder will determine where that band is based on the parameters of your combination.
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