Cam gurus!
The boat I just bought has a 496" 420 mega blower, 8.7-1 compression . The cam is a hyd flat tappet, 240 246 .560 .570 with a 112lsa. Does that sound like a good cam for this setup? Motor made 720hp 697 TQ on 6 psi.
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Originally Posted by monster12valve
(Post 4543235)
The boat I just bought has a 496" 420 mega blower, 8.7-1 compression . The cam is a hyd flat tappet, 240 246 .560 .570 with a 112lsa. Does that sound like a good cam for this setup? Motor made 720hp 697 TQ on 6 psi.
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Originally Posted by monster12valve
(Post 4543235)
The boat I just bought has a 496" 420 mega blower, 8.7-1 compression . The cam is a hyd flat tappet, 240 246 .560 .570 with a 112lsa. Does that sound like a good cam for this setup? Motor made 720hp 697 TQ on 6 psi.
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Thanks guys, only reason I asked is because it does surge. Afr is 13.5 at idle 12.4 at I believe (don't have sheet in front of me) at 4000rpm and 11.7 5700 to 6000. Oh and motor has 3 hours.
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Originally Posted by Rookie
(Post 4543440)
I'd go with a 2/3 race cam. I don't think you have enough compression for a 3/4 race. Make sure it has the 2-3, 4-7 swap so it doesn't sound to powerful and get the attention of the H2O Po-Po.
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Originally Posted by monster12valve
(Post 4543467)
Thanks guys, only reason I asked is because it does surge. Afr is 13.5 at idle 12.4 at I believe (don't have sheet in front of me) at 4000rpm and 11.7 5700 to 6000. Oh and motor has 3 hours.
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I haven't heard 3/4 race cam since the sixties. and I am pretty sure it was meaningless then. I am assuming there was some tongue-in-cheek there?
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Mike, It has twin Holley 750's
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Originally Posted by dereknkathy
(Post 4543529)
I haven't heard 3/4 race cam since the sixties. and I am pretty sure it was meaningless then. I am assuming there was some tongue-in-cheek there?
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