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» Northern California Ford Owners     » Automotive   » Tech Talk   » Cam Lift

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Author Topic: Cam Lift
PopTheHood
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I was just wondering how to figure out the final amount of lift that you get when you change the rockers,or pushrods? Lets say my cam has 499/510 lift and i use that with 1.6 rockers. does that change the amount of lift? i would not be changing the pushrod size. I have a set of heads with springs that are only good till a 540 lift. What amount of lift along with the 1.6's would be close to that lift?
Posts: 185 | Registered: Sep 2006  |  :
FasterDamnit
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Your cam will be rated for total lift at the valve w/ stock rockers- that is 1.6 ratio for Ford small blocks. To find your lobe lift divide the .499"/.510" numbers by 1.6. Once you have lobe lift you can multiply by any rocker ratio you want to find the total valve lift (say move up to 1.7's.)

Sooo-

.499"/.510" is your valve lift w/ 1.6 ratio rockers and will be fine w/ .540" lift capable springs. Be sure they are also rated for hydraulic roller lifters.

--------------------
'92 LX T5
Looked stock, went 11's 11.90 at 115mph.

'65 Mustang 347

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Posts: 2971 | From: NorCal | Registered: Sep 2001  |  :


 
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