604 CI Build sheet
01-31-2011 | 04:45 PM
#41
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From: Frankfort,ill
I did get to talk with Bob. However he was running out the door to catch a plane. I have decided to call Crane cam and based on my build this is what they came up with.
690 Lift 262/274 @ 50 LS 114 with 1.8 rockers.
I wish I knew enough to say go ahead. Bob will be back in town early next week so I guess I should wait.
Thanks
690 Lift 262/274 @ 50 LS 114 with 1.8 rockers.
I wish I knew enough to say go ahead. Bob will be back in town early next week so I guess I should wait.
Thanks
02-02-2011 | 02:52 PM
#43
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Cams
Well I have not been able to reach Bob. However I did talk to Joe Coretti who said do not go over 650 on the Lift with HYD rollor lifters. He said my duration should be about 245 -255 @ .50 and 650 with LS @ 114 and 1.7 Rockers.
What do you think?
What do you think?
02-02-2011 | 08:14 PM
#45
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That is the reason for the 1.8 ratio rockers, it keeps the cam lobe lift and the ramp speed down (good for hydraulic rollers) but puts the lift into the valve for extra air flow. I agree do not exceed .650 lift with hydraulic roller lifters.
02-02-2011 | 08:42 PM
#46
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From: Delaware
I am running a Hyrdaulic now. .647/.647 and 252/262 @50. I dont know what my LSA is. I would say that what you have there is a good choice, but if you have dry exhaust i would throw some more duration in there.
02-02-2011 | 09:22 PM
#47
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From: New Castle, DE
Rudy knows his stuff and he just finished another 1 just like yours that was Brand new & came from here in ill .Rudy's engine is top notch! He educated me too.
02-03-2011 | 06:29 AM
#48
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what are the CI's on your motor? Are you fuel injected or Carb? How is your Idle? Thanks
02-03-2011 | 12:34 PM
#49
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I just got off the phone with Bob. WOW what an education and a great guy to talk to. Bob asked questions that no one else had asked. Everything from how I plan on using my boat to what exhaust, Head type- flow and EFI I was using. I underestimated how the cam really works. If I had not already ordered my motors Bob would have receive my purchase order after all that. Building a low maintenance and dependable motor was always my number one goal. I think Bob filled in all the missing pieces. Thanks Bob
02-04-2011 | 07:14 AM
#50
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From: Delaware
I idle at 850rpm out of gear, 500rpm in gear. It doesnt surge, has never stalled, just lopes along. I am running 10:1 compression and pretty conservative timing at 33º total.
