454/330 ----> 500hp cam selection

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11-17-2023 | 05:49 AM

#11

cdaniel525

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Quote:

Originally Posted by Rookie

Comp 11-451-8 in a 454

Thanks, any experience with that cam in a 454? I'm worried with the specs being smaller that the old Crane flat tappet I'll lose power, unless the roller design and profile will make it up?

11-17-2023 | 01:50 PM

#12

Rookie

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From: Grand Rapids, MI

I also run the 500 EFI cams in my stock Merc 420's. 230/236 Duration, 598/610 Lift on a 114

I run a Comp 237°/243° on my 8.9:1 587HP 454's. I'd run this cam if I was buying new.

11-17-2023 | 02:01 PM

#13

cdaniel525

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Quote:

Originally Posted by Rookie

I also run the 500 EFI cams in my stock Merc 420's. 230/236 Duration, 598/610 Lift on a 114

I run a Comp 237°/243° on my 8.9:1 587HP 454's. I'd run this cam if I was buying new.

Second one sounds impressive! Custom grind or do you have more specs that I can track down if of the shelf? Grind # or part #

11-17-2023 | 03:39 PM

#14

JaniH

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From: Finland

Quote:

Originally Posted by cdaniel525

Yes, it'll support 500, see below

The exhaust will support it, had EMI Thunder with dry to the tip tails and wouldn't do anything less than that. Do you think the exhaust held up yours from going over 5300?
Im not looking to go to far past 5500, 6k max

I think the 465 cam is slightly different but very close to my old flat tappet Crane can... 465 specs per oso thread is 240º/250º - 559"/.578" - LSA 110º + 5º
It's a shame Crane is gone

My cylinder heads chokes the engine. Using stainless marine with dry to transom risers, and thats how it was dynoed.

11-17-2023 | 05:33 PM

#15

getrdunn

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From: NW Michigan

Quote:

Originally Posted by cdaniel525

Second one sounds impressive! Custom grind or do you have more specs that I can track down if of the shelf? Grind # or part #

I’m guessing Jason’s power comes from his heads!!! Lol

edit;

Not sure why I was thinking crane 134551. Been a minute since those good ol days. Regardless many grinds very similar to.

Last edited by getrdunn; 11-17-2023 at 05:54 PM.

11-17-2023 | 06:40 PM

#16

Sporl Performance

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I have in STOCK
230-235 240-245 250-255 260-265 265-270 270-275
646-646 646-646 646-663 663-663 663-680 680-680
114 114 114 114 114 114
Std and LS firing order.
Other grinds available.
CALL
Ron
504-616-6005

11-17-2023 | 08:24 PM

#17

Rookie

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From: Grand Rapids, MI

Quote:

Originally Posted by cdaniel525

Second one sounds impressive! Custom grind or do you have more specs that I can track down if of the shelf? Grind # or part #

Builder called Comp and they ground it. The ramps are not too aggressive and I run solids on these HUC HR cams. Comps said that they have no issues with that. Mine are on a 114 for EFI, I probably should have put them 112 for more torque. Also 2/3,4/7 swap. (LS)