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-   -   Cam and lifter choice 548ci (https://www.offshoreonly.com/forums/do-yourself-boating-budget/384323-cam-lifter-choice-548ci.html)

WR-1 11-30-2024 10:22 AM

Cam and lifter choice 548ci
 
Hey guys.. this has probably been gone over a bunch but I need some advice on cam selection.. To give some info on what I am doing.. I have a Dart block, Eagle rotating assembly, je pistons.. using AFRs partial cnc 305cc heads, B&M 420 mega blower with superchiller and twin quick fuel 750 carbs.. I like the Crane 651 but I'd like it with a 4/7 swap.. I am running CMI headers and I'm trying to stay safe on 92* octane and no chances of reversion issues.. I would like to see 850-900 hp but obviously want it safe and reliable.. any help is appreciated..also, I am not opposed to buying a lightly used cam if anyone has a lead on.. thanks again

sutphen 30 11-30-2024 06:58 PM

call bullet cams and tell them what you want.do it quick,,cores can be hard to come by.so be ready to buy

F-2 Speedy 11-30-2024 08:10 PM

I dont see any way you will make that kind of power with those parts

mike tkach 12-01-2024 02:53 AM

the 651 or an equil cam from another company would be a good choice.the heads would not be my choice and i think will hurt higher rpm power.what compression ratio are you at?

SecondWind 12-01-2024 06:39 AM


Originally Posted by F-2 Speedy (Post 4915532)
I dont see any way you will make that kind of power with those parts

Does 750-800 sound reasonable with the correct cam selection?

sutphen 30 12-01-2024 10:22 AM


Originally Posted by SecondWind (Post 4915540)
Does 750-800 sound reasonable with the correct cam selection?

thats more likely the power your gonna make,,torque will be pretty high too

ICDEDPPL 12-01-2024 10:49 AM


Originally Posted by mike tkach (Post 4915537)
the 651 or an equil cam from another company would be a good choice.the heads would not be my choice and i think will hurt higher rpm power.what compression ratio are you at?


Hey mike !! Good to see you post again.
Hope all is well.

WR-1 12-01-2024 12:27 PM

Probably 9:1.. I'd like to stay around 7-8 psi.. I already have the AFRs and I'm kinda committed at this point so if it can't make the power I'm going for, it'll just be what it is..lol.. I guess I was hopeful by what I've seen from others builds

F-2 Speedy 12-01-2024 03:20 PM

I like the 651 cam, I built some 540's with those AFR 305 heads they made 630 hp through a 500 EFI intake, they had custom grind double swap billet core cams by Cam Motion dont know if they are still around or not.

https://cimg9.ibsrv.net/gimg/www.off...aaa726853c.jpg


WR-1 12-01-2024 06:22 PM

Those are good numbers.. How did your valve train hold up with this cam?


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