The ports dont need more lift, they are high velocity, venturi shaped, so low lifts work on street engines. Its why they are big on torque. The lifter bores aren't a problem until 700 lift or with very aggressive solid roller lobes. I don't need cams larger than that because I'm not getting the heads ported yet. I want to see how well the 6X can do on its own.
The big cams require a brace that bolts into the lifter galley, they're called mega braces. I have one in my high powered 467 for insurance, even though it has only 660 ish lift. When I build a RAV engine it will get the brace, because those ports can utilize more lift. The street cams for RAV heads have 770 lift, and those ports are huge, damn near 351C 4V size, I think bigger.
http://lmc3470.wix.com/mccarty-racin...-engines/c1qul out of the budget for this one, but if I can sell something and get the funds for that top end, it will go on one of my other 400 blocks.
The big cams require a brace that bolts into the lifter galley, they're called mega braces. I have one in my high powered 467 for insurance, even though it has only 660 ish lift. When I build a RAV engine it will get the brace, because those ports can utilize more lift. The street cams for RAV heads have 770 lift, and those ports are huge, damn near 351C 4V size, I think bigger.
http://lmc3470.wix.com/mccarty-racin...-engines/c1qul out of the budget for this one, but if I can sell something and get the funds for that top end, it will go on one of my other 400 blocks.
Comment