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Author Topic:   JR Motorsports Cam
Dirt Forum Racer

Total posts: 81
posted June 30, 2005 10:58 PM  
anyone used the prc 109 modified high torque cam in a 358 on a 1/4 mile track? wondering how it was and what its characteristics were. any input appreciated. Thanks

Dirt Maniac

Total posts: 145
posted July 01, 2005 08:23 AM  
We ran that exact cam in a 353 mod engine. We had pretty big heads and valves for this little engine (64cc, 230 runner, 2.08, 1.6 valves). We had to gear it high to be able to turn enough rpms with these heads. Middle of straight to corner, it had very good power. Lacked some torque though off the corners. We turned it 7200-7500 nightly. In may opinion, a very good dry slick combo. The cam held up well too. I suggest running the lifters with the pin hole oiler in it.

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