Roller Cam Upgrade
I am thinking about switching out my flat tappet for a roller cam. I have done a lot of reserch and have I think I have it narrowed down to a few diffent cams.
Heres is my current setup. Gen V 489 Stroker with 8.9 compression all forged internals Holley MPI with 42lb injectors laptop progamable EMI exhaust with long risers and O2 sensors Large Oval 820 Heads 2.19/1.88, gasket matched and ported I do not have any flow numbers but they are very similar to 049/781 except for a smaller 110CC chamber My current cam is a Lunati 30219 540/550 lift 230/235 duration 114 LSA Here is what I have been looking at Crane 268761 598/610 230/236 114 LSA 4/7 swap Crane 169621 Same as the 268761 no 4/7 swap Crane 139671 610/632 236/244 114 LSA The 168731 looks like a good cam but I need 114 LSA for MPI Any input would be appreciated. |
I have two cams out of Hp500 one carb one EFI with lifters . The carb cam is 222/230 576/598 .$ 275.00 plus shipping. The EFI cam is 230/236 598/610 dyno time only $ 450.00 plus shipping. :cool:
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Contact RMBUILDER ([email protected]) and have one custom made for your application. He has done several for me with great results. He can set you up with everything you need.
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Originally Posted by 1BIGJIM
(Post 2780682)
Contact RMBUILDER ([email protected]) and have one custom made for your application. He has done several for me with great results. He can set you up with everything you need.
I agree..."RMBUILDER"/Bob Madara of Marine Kinetics in N.Y. 585-654-8583. He is the cam guru and helped a lot of guys with custom cam combinations for marine offshore hi-perf engines----and it wont cost you anymore than a new "off the shelf" cam that you will pay from popular manufacturers. Also, no offense to anyone, but you probably should not pay more than .50 cents on the dollar for a USED cam (i.e. $175 or so). |
I sent Bob an email. I will wait and see what he thinks. I am in no hurry I have a few months before for boating season.
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I just got off the phone with Bob. He will be getting back to me in a few days.
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Originally Posted by jeffswav
(Post 2780482)
I am thinking about switching out my flat tappet for a roller cam. I have done a lot of reserch and have I think I have it narrowed down to a few diffent cams.
Heres is my current setup. Gen V 489 Stroker with 9.3 compression all forged internals Holley MPI with 42lb injectors laptop progamable EMI exhaust with long risers and O2 sensors Large Oval 820 Heads 2.19/1.88, gasket matched and ported I do not have any flow numbers but they are very similar to 049/781 except for a smaller 110CC chamber My current cam is a Lunati 30219 540/550 lift 230/235 duration 114 LSA Here is what I have been looking at Crane 268761 598/610 230/236 114 LSA 4/7 swap Crane 169621 Same as the 268761 no 4/7 swap Crane 139671 610/632 236/244 114 LSA The 168731 looks like a good cam but I need 114 LSA for MPI Any input would be appreciated. 598/610 230/236 114 LSA 4/7 swap |
Another vote for Bob Madera... the guy really knows his stuff.
My dyno guy has been building circle track motors for 50 years and is very respected in my area. When he dynoed my last motor with one of Bob's cams in it, he was so impressed that he called Bob, and started using his cams in all his marine motor builds. Chris |
Originally Posted by KAAMA
(Post 2780801)
I agree..."RMBUILDER"/Bob Madara of Marine Kinetics in N.Y. 585-654-8583. He is the cam guru and helped a lot of guys with custom cam combinations for marine offshore hi-perf engines----and it wont cost you anymore than a new "off the shelf" cam that you will pay from popular manufacturers.
Also, no offense to anyone, but you probably should not pay more than .50 cents on the dollar for a USED cam (i.e. $175 or so). |
I thought it was priced hig at first also, until I saw it came with the lifters. With lifters, its a very good price.
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