… that cam made the GTO go the fastest it had run with the HP heads and make the most power it had done on the Dyno with the HP heads …
… so what exactly is your reasoning for thinking the cam favors the CV-1’s more than the HP’s ??? …

Bill,
Could you or Mike post up a dyno sheet?

You have read this forum long enough to know there are some strange ideas about cam selection here.

Thanks,
Stan

What was the MPH difference ? That is the measurement of power.

Just under 3 mph

Mike Dyno tested the HP combo awhile ago but the CV-1 combo wasn’t run on the Dyno …

What heads were on it before the High Ports ?
The cam is a good 20 deg more than the cam I am running in my 461 with High Ports.
Its just my opinion, that cam was not a great match for those heads and his combo.
Its going to want more head and the converter and gears required for a .285 @ .050 is not street friendly.
Kind of a miss-match and the CVs helped the situation.

… unported HP’s we’re on it previously, but you’re saying the CV-1’s are more head, in what way ?? …

… cam is fairly snotty but still drivable, so what I looks like you’re suggesting is the CV-‘s don’t make this improvement if Mike had a smaller camshaft ?? …

To make peak HP at the same RPM as you, how much more cam does his 505 ci engine need verses your 461 ci engine if both are running the high-port heads?

Also he is running a SRT cam is your cam Solid or Hydraulic?

Stan

I don't get your logic. Just because it's a bigger cam than you run?? Street able?? That's an opinion. I'm running a .276/.284@ .050 SR. I have driven it on the street. It idles at 1100-1200 rpms. It's kinda rowdy but it's all about what you are willing to accept as street
The HP heads flow close to what the CV1 heads flow, just a little less so I don't see the cam being such a miss match for the HP heads

That is not what I am saying at all. I am saying the combo as done originally was strange. Not a good match.
3550lb car with 200lb driver running a 6.74 is showing 675 HP and a 505 with that much cam should blow well past that level.
Its near the same weight as my car, same gears and my old 455HO had the same 60 foots or better and would go in the high 6s in the 1/8th. Lot of money for a couple of tenths.
Its just my opinion for whatever that is worth but a cam that big in a 505 should have lower than 4.10s with a big stall converter to make it work.
Just a strange combo and your heads helped it work better.

… you know what Mike weighs ? …
… maybe you can post your time slips ? …
… maybe you could post actual details of your car, including weight ? …
… maybe post your actual experience and track data with a HP combination? …
… so Mike’s HP combo is “Strange” now ? …
… so apparently you’re smarter than Kevin Sweeney ?

We all knew where this thread was headed................

:ranger:

SMH! :D

… yeah he clearly doesn’t care for the CV-1’s, so I figured I’d just ask questions based on his posts …

I am not going to say one bad thing about your heads.
Clearly the owner Mike, who I am sure is a fine fellow thought his 505 with the 380 High Ports was not what he wanted, paid a lot of money for that stuff. So he bought your heads and it ran quite a bit faster.
I know 2 people who bought some of KREs CNC High Ports. A 380 set and a 400 cfm pair.
Both were unimpressed and sent the heads out to another head porter and both commented that the ports were tall and kind of narrow.

Who Is Kevin Sweeney? Also what makes him smart? ..... Just curious

Just a fwiw the amount of duration on that cam is almost same as mine that made 1050hp @8000rpm from a 511ci. Seems like a lot of duration for this application to me.
3 tenth in 1/8 is a good gain for sure

Exactly. I thought of builds like yours when that cam was posted.

… well paint me stupid because I didn’t expect that 👍🏻 …
… so does that mean you think the CV-1’s are good heads ? …