Offshoreonly.com - 310 cc heads

Offshoreonly.com (https://www.offshoreonly.com/forums/)

- General Q & A (https://www.offshoreonly.com/forums/general-q-20/)

- - 310 cc heads (https://www.offshoreonly.com/forums/general-q/332359-310-cc-heads.html)

Quote:

Originally Posted by MILD THUNDER (Post 4376148)

So 650hp 540 with a 236/244 hydraulic cam is kool aid as well sutphen?

What cam would you recommend in a 6,000rpm marine hyd roller engine ?

one thats normal and not some abomination that your buddies like.
but I too call bullet and get cams but I don't say I designed it.

and I've built the engines,why don't you tell us your great fantasy pick w/ magical upping the hp bar that seems to come from the 3 amigos.

maybe the next time I dyno,I'll use 10/40 oil and run the water temp close to 200°.oh and have 10-20% correction.I'll also leave out the fuel flow rate as I don't want you guys doing basic math to catch the major fudge factor.

Quote:

Originally Posted by sutphen 30 (Post 4376152)

For one, I am not "buddies" with foxwell, nor straub. I have never purchased anything from them, or done any business with them.

From an outsider looking in, they seem to sell alot of stuff to drag racers, with good feedback. They provided the cam, and a few other things for offshorexcursions 6k rpm 750hp 572's. Which I know for a fact, were not "dyno fudged" . They had no reason to "fudge" numbers, as matter of fact, they were trying to see who knows setups, as at the same time, they had these 572's, and a pair of 572's with bob's cams.

I know I know, everyones dyno numbers are lies...you've told me several times the DTS dyno we use at our local shop, is "happy", we are all lying, and if anyone wants accurate numbers, they should just go to coughlin machine....

Quote:

Originally Posted by MILD THUNDER (Post 4376003)

You're just an idiot, and so is Chris Straub. That combo you guys did for offshoreexcursions hyd roller 572ci's, making 750HP at 5900RPM, thru 1 7/8 primary CMI headers, and around 800hp with 2.25 dyno headers, with less than 10:1 compression, that run fantastic in his 36 gladiator, just a real turd. :rolleyes: Oh, and the parts that were purchased, sent in for machine work, and overall time from first phone call to delivered components, was very reasonable.....but, some guys don't like you, so you suck.

You guys are a joke. Please, there's no room for your input here on engines. ;)

So whos dyno did it make 800 hp on? Im good friends with john teenier and we talk regularly, id like to see THAT dyno sheet!

Quote:

Originally Posted by articfriends (Post 4376168)

So whos dyno did it make 800 hp on? Im good friends with john teenier and we talk regularly.

Was it johns dyno kevin used ?

Yep, i will give kevin this, johns dyno is known to post lower numbers than most.

Quote:

Originally Posted by articfriends (Post 4376170)

Yep, i will give kevin this, johns dyno is known to post lower numbers than most.

He sent me his sheet of his last pull, and i certainly thought 750ish thru 1 7/8 cmi headers he has, was very respectable at 6k rpm , esp with less than 10:1 compression.

From what i read here, being a straub cam, i would have thought 475hp at 8500rpm and reverted so bad it would suck the rear cleats right off the boat

Right, dynoed with his tractor headers in the 730s, 740s with inserts out and low to mid 750s with the cmis, theoretically might have made bigger numbers with 2.25 dyno headers but i was told by john that never happened.

Quote:

Originally Posted by articfriends (Post 4376176)

Now how about those crockett built 509s he had with 274ish duration supercat cams, with flat top pistons and ported chamber brodix heads netting sub 9:1 compression....that was a nice combo.

Quote:

Originally Posted by MILD THUNDER (Post 4376003)

You're just an idiot, and so is Chris Straub.
offshoreexcursions hyd roller 572ci's, making 750HP at 5900RPM, thru 1 7/8 primary CMI headers, and around 800hp with 2.25 dyno headers, )

Quote:

Originally Posted by articfriends (Post 4376176)

, theoretically might have made bigger numbers with 2.25 dyno headers but i was told by john that never happened.

well at least you got 1 thing right and caught in another stretching of the truth.

Quote:

Originally Posted by MILD THUNDER (Post 4376180)

Now how about those crockett built 509s he had with 274ish duration supercat cams, with flat top pistons and ported chamber brodix heads netting sub 9:1 compression....that was a nice combo.

Never heard his exact old combo except that it had giant race cams with low compression, sounds like a mess, never heard who built them, i know they didnt last long!