GT40s.com - View Single Post - 302 - SVO re-build

Howard Jones · 10-22-04, 12:14 AM

I'm home now so I can look at my FMS catalog.

The B cam I mentioned above has a little more lift than I remembered. It is listed as .48 so the increased lift going to 1.7 rockers from 1.6 is .48 X 1.1 = .528

I WILL SAY AGAIN CHECK FOR VALVE TO PISTON CLEARANCE. It should be ok with the 1.94 intake valve head. I'm not sure about the 202's.

Changing over to 1.7 roller rockers is sort of a 2fer. You pay for much better rockers and kind of get a free cam change in the process. Looks good on the comtrollers buget report also.

As a point of reference the next cam in FMS's catalog going towards hotter is the X cam and it has a lift of .542 along with a slightly longer duration on both intake and exaust so you can see that you would be going in the right direction without getting too exotic with cam selection.

I plan to do this to my motor at some future date. New springs and rockers and change the chip in the rev limmiter and keep the rest of the motor intact. My guess is it should be good for 40hp or so. Or about 10 ro 11 bucks per hp. Thats not too bad. Anyway thats my story and I'm sticking to it.

10-22-04, 12:14 AM	#7 (permalink)
Howard Jones 10 tenths Join Date: Jun 2002 GT40: San Francisco Bay Area California USA Posts: 1,947 Rep Power: 26	Re: 302 - SVO re-build I'm home now so I can look at my FMS catalog. The B cam I mentioned above has a little more lift than I remembered. It is listed as .48 so the increased lift going to 1.7 rockers from 1.6 is .48 X 1.1 = .528 I WILL SAY AGAIN CHECK FOR VALVE TO PISTON CLEARANCE. It should be ok with the 1.94 intake valve head. I'm not sure about the 202's. Changing over to 1.7 roller rockers is sort of a 2fer. You pay for much better rockers and kind of get a free cam change in the process. Looks good on the comtrollers buget report also. As a point of reference the next cam in FMS's catalog going towards hotter is the X cam and it has a lift of .542 along with a slightly longer duration on both intake and exaust so you can see that you would be going in the right direction without getting too exotic with cam selection. I plan to do this to my motor at some future date. New springs and rockers and change the chip in the rev limmiter and keep the rest of the motor intact. My guess is it should be good for 40hp or so. Or about 10 ro 11 bucks per hp. Thats not too bad. Anyway thats my story and I'm sticking to it.