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Old 08-13-2007, 02:00 PM
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What Cam To Use?

I Have A 351 Small Block And Am Wanting To Give It A Little More Umph. Without Having To Change Every Internal Part. Any Suggestions?
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Old 08-13-2007, 02:48 PM
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Why do you capitalize every word in your post?


What year and car is this 351 in?



I could suggest something like a 4bbl carb,.....But, if it's already fuel injected........
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Old 08-13-2007, 02:56 PM
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The 351 Is In A Ford Truck,and Its A '94
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Old 08-13-2007, 03:35 PM
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Your 94" Ford could have came with a roller, or flat tappet cam......Vin H for the roller, and vin R for the flat tappet.

The flat tappet cam specs where 198*/208* @ .050", .416"/.445", 114.5LSA.
The roller cam specs where 176*/197* @ .050", .421"/.447", 115.5LSA


Where do you want more "Umph"?

If you have a roller motor, a used Mustang 5.0 cam off Ebay might be the hot ticket... Dan
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Old 08-13-2007, 06:09 PM
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Changing cams

Where would the H or the R fall in the vin? Cause my vin has both an H and an R.
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Old 08-13-2007, 06:18 PM
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You're starting at the wrong end of the truck. Shorter ring & pinion first.
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Old 08-13-2007, 07:13 PM
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Different cam, headers and gears.
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Old 08-13-2007, 08:16 PM
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Your letter code should be in, about the 8th spot.

Go here to decode your VIN...... http://www.fordf150.net/howto/decodevin.php

And here to figure your axle ratio from the sticker in the door.
http://www.fordf150.net/howto/decode.php


You may find that you already have a 3.73 and limited slip in the truck.

Then again, you may have a peg leg and a 3.08 gear. If that's the case, techinspector1 is giving good advise.



My guess is that you have the roller cam with only 176* of intake duration.....A Mustang roller has 210* on both intake and exhaust. Very mild in a 351, yet it'll wake it right up in the mid range.......Dan
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