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-   -   Am I leaving HP on the table?? (https://www.offshoreonly.com/forums/general-q/367426-am-i-leaving-hp-table.html)

hoodoo 07-12-2020 09:19 AM

Am I leaving HP on the table??
 
https://cimg0.ibsrv.net/gimg/www.off...388e451b3.jpeg
I’m trying to finish a pair of tall deck 615’s ASAP. I bought these cams because initially I was going keep wet exhaust. But the long tails won’t fit this transom without major surgery. Ordering dry tails now and thinking I should rethink the cams. Running dart 325’s with profiler sniper intakes and 1050 dominators.
CR should end up at 9.75
Any ideas would be much appreciated.

F-2 Speedy 07-12-2020 10:37 AM

Thats not much cam for your cu in and heads........this might be a good choice.....Crane #139651 - 244/256 @.50" with .632/.632, 114

hoodoo 07-12-2020 11:59 AM

I was thinking they might not be enough, I’ve had to change direction a couple times, the lockdown in March made getting some parts slow.
My GM bow tie blocks got canceled so I went to Brodix. So now I have gen 4 blocks and gen 6 cams/timing chains. I think gen 6 cams are compatible as long as I have gen 6 timing chains.

endeavor1 07-12-2020 12:00 PM

I swapped 741 cams to 651s on 565 NA motors and really woke it up. I would think what Ken suggested above is a great starting place.

Griff 07-12-2020 12:29 PM

The cam you posted would be best for a 502-540 ci. I think you need significantly more cam for 615ci.

articfriends 07-13-2020 06:41 AM

Way too small, definately go bigger otherwise your mmotor will peak just over 5000 rpms

hoodoo 07-13-2020 09:10 AM

I have the 651’s on the way.
THANK YOU

F-2 Speedy 07-13-2020 09:28 AM


Originally Posted by hoodoo (Post 4747930)
I have the 651’s on the way.
THANK YOU

you gonna dyno them ? Id like to see the #'s if you do

ThisIsLivin 07-13-2020 12:22 PM

You might want to think about the getting the heads ported. The Dart 325's are a bit small for your combination.

hoodoo 07-13-2020 04:29 PM


Originally Posted by F-2 Speedy (Post 4747934)
you gonna dyno them ? Id like to see the #'s if you do

yes as soon as I get them back
probably mid- late August, I’ll post #’s


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