305 .030 over is...

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Jun 24, 2002 | 01:40 AM

330hp_91RS

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Joined: Jan 2002

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From: Kona, Hawaii / Redlands, CA

Car: 91' RS

Engine: Built 355

Transmission: Probuilt 700r4

305 .030 over is...

I just picked up my new L69 yesterday... had it bored .030 over and shaved the heads to 56cc

What does the c.i. come to if you bore a 305 .030 over and what is the equation to get the #??? My guess is 309 or 310c.i.

Jun 24, 2002 | 07:29 AM

ede

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From: Jackson County

310, at least that's what everyone i know calls them

Jun 24, 2002 | 07:57 AM

five7kid

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From: Littleton, CO USA

Car: 82 Berlinetta/57 Bel Air

Engine: L92/LQ4 (both w/4" stroke)

Transmission: 4L80E/4L80E

Axle/Gears: 12B-3.73/9"-3.89

Volume of a cylinder: area of the base times the height. Base is a circle, which is radius squared times pi (or diameter squared divided by 4 times pi). Diameter is what we call bore. Height is the stroke.

So, 3.766" times 3.766", divided by 4, times 3.14159, times 3.48", times 8.

310.11 cubic inches.