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Old 12-14-2006, 11:55 PM   #1
chevyc1068
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Need 307 info

Can someone either point me to a site or tell me some general info on 307s? Like compression ratio, horsepower, torque, stroke, bore, quality of heads, what kind of valve lift the heads accept, and anything else that might be useful for buying parts for it.

Thanks for any info!!
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Last edited by chevyc1068; 12-14-2006 at 11:58 PM.
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Old 12-15-2006, 12:20 AM   #2
dave2953
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Re: Need 307 info

All this info. is from the service manual for my 68.

Two compression ratios are listed.

8.25:1 is 180 HP@4400 RPM and 285 torque @ 2400 RPM
9.0:1 is 200 HP @4600 RPM and 300 torque @ 2400 RPM

Bore is 3 7/8" and stroke is 3.25"

I'm not sure about the lift the heads will accept. Hope some of this helps.
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Old 12-15-2006, 04:02 PM   #3
chevyc1068
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Re: Need 307 info

Thanks for the info. The compression ratios will do I wanted to make sure they were above 8:1 ratio.
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Old 12-15-2006, 05:02 PM   #4
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Re: Need 307 info

Little bit of info about 307 Chevys: http://www.jalopyjournal.com/forum/s...ad.php?t=45615
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