350 to 383

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May 5, 2002 | 11:23 AM

89BlackFBird

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From: Naugatuck, CT USA

350 to 383

For a stock 91 Formula 350 TPI L98 how much more horse would it have if u rebored it to a 383 stroker?

May 5, 2002 | 11:56 AM

John Millican

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From: Savannah, GA

Car: 1997 Jeep Wrangler

Engine: 4.0L

Transmission: 5 speed

Axle/Gears: 8.8 rear, 4.56 gears, 4:1 transfer

You don't bore it to a 383, you remove the 350 crank and install a 400 crank. This and .030" over pistons give you a 383. If you don't change the pistons it will be something like a 377.

May 5, 2002 | 02:29 PM

rhuarc30

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From: Cottonwood, AZ 86326

John's right, a 383 won't give you that much more hp than a 350, a little, not a lot though. What it will do is give you a bunch more torque at lower rpms, and using the same cam you'll get the power to come in at a lower rpm.