Differences between 302 and 351

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Jul 2, 2005 | 11:16 PM

PyroBandito

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Joined: Jul 2004

Posts: 125

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From: Culpeper, VA

Differences between 302 and 351

Ok, I just have a few questions about things i need to change on my engine. I switched from a 302 to 351w (EFI) and I'm working on getting it running right. Do i need to make any changes to the exhaust system to increase flow, or is it the same for both engines? Also its running quite a bit warmer than the 302 did, but still well within the safe limit, do I need a bigger radiator or water pump? I was looking at a cool loooking Edelbrock water pump with the Permastar finish, but it says they shouldn't be used with serpertine belts. Is that because the pulley will slip, or is it something i haven't thought of? Also, I hear people talk alot about checking for vacuum leaks, but is there any easy way to do that?

Thanks alot, any input would be appreciated.

Jul 2, 2005 | 11:20 PM

chrono4

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Joined: Jan 2004

Posts: 5,377

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From: Elkhart IN

well, if you think your having a vacuum problem, try spaying the area you think might be leaking with starting fluid, and listen for a raised idle, theres your leak. put a vacuum gauge on it and check.