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jdf4068 11-05-2019 03:03 PM
Cam choice
 
thinking abt a cam change what is in there now is comp cam extreme marine 284 hr... spec 230/236. 547/547 lift ..... motor spec. Are stroked 454 to a 496...9.5 to 1 comp ..heads are alum 330 runners. With 2.250/1.99 valves What would y’all recommend

GPM 11-05-2019 03:09 PM
Oh, you opened the can now,

jdf4068 11-05-2019 03:18 PM
Originally Posted by GPM (Post 4713755)
Oh, you opened the can now,
lmao. I’m bored we need some drama. ..

sutphen 30 11-05-2019 03:40 PM
3/4 race cam for sure.:D

cigrocket 11-05-2019 03:43 PM
Ways to start Drama on offshore only..... Cams, Oil, Apache, Tow Vehicle rating. It is only November......lol

BBYSTWY 11-05-2019 04:35 PM
278/288
228/238 at .050
.612/.618 lift
114 lobe separation
With a set of tie bar comp lifters....if only you could find one....

I know exactly where one is right now lol

jdf4068 11-05-2019 04:56 PM
Originally Posted by BBYSTWY (Post 4713764)
278/288
228/238 at .050
.612/.618 lift
114 lobe separation
With a set of tie bar comp lifters....if only you could find one....

I know exactly where one is right now lol
you do ,,looks like a nice cam ....who made it

jdf4068 11-05-2019 04:57 PM
Originally Posted by cigrocket (Post 4713761)
Ways to start Drama on offshore only..... Cams, Oil, Apache, Tow Vehicle rating. It is only November......lol
lol.

BBYSTWY 11-05-2019 05:01 PM
Comp custom grind...ran it in my motor for 8-9 hours...nothing wrong with it at all just going a little bigger

Its a flat/button nose cam

If you're interested PM me...was gonna throw it on here once I get it pulled which should be this coming Saturday.

GPM 11-05-2019 05:11 PM
What are your plans for the boat, how are you going to run it, towing skiers, cruising or a lot of wot ? what exhaust , what intake, carb or efi ?

phragle 11-05-2019 05:15 PM
Custom Bob Straub 7/8 race grind with the even/odd cylinder swap with 3.14159265359 degree advance.

jdf4068 11-05-2019 05:43 PM
Originally Posted by GPM (Post 4713768)
What are your plans for the boat, how are you going to run it, towing skiers, cruising or a lot of wot ? what exhaust , what intake, carb or efi ?
to answer your question,,,cruiser 89 scarab 3. Has dual plane now ..going single for sure,,,exhuast is gill offshore wet style ..ard 5500- 5800,,, props are hydro 4 blade 27 pitch ...bravo drive 1.50 Does this help ?

jdf4068 11-05-2019 05:44 PM
Originally Posted by BBYSTWY (Post 4713767)
Comp custom grind...ran it in my motor for 8-9 hours...nothing wrong with it at all just going a little bigger

Its a flat/button nose cam

If you're interested PM me...was gonna throw it on here once I get it pulled which should be this coming Saturday.
i might be. Then i could have another made ,,,

phragle 11-05-2019 05:45 PM
Belt driven intake manifolds would really wake it up.....

jdf4068 11-05-2019 05:45 PM
Originally Posted by sutphen 30 (Post 4713759)
3/4 race cam for sure.:D
naw dawg. Let’s go full race deal ,,lol

GPM 11-05-2019 05:50 PM
Originally Posted by jdf4068 (Post 4713775)

to answer your question,,,cruiser 89 scarab 3. Has dual plane now ..going single for sure,,,exhuast is gill offshore wet style ..ard 5500- 5800,,, props are hydro 4 blade 27 pitch ...bravo drive 1.50 Does this help ?
Did you do any port work on the heads

compedgemarine 11-05-2019 06:08 PM
Originally Posted by sutphen 30 (Post 4713759)
3/4 race cam for sure.:D
had an old timer at a car show once ask me if I had a 3/4 cam in my motor, I said "no, I put the whole thing in there". he didnt seem impressed with my answer.

jdf4068 11-05-2019 06:21 PM
Originally Posted by GPM (Post 4713779)
Did you do any port work on the heads
no not really just cleaned up a few spots ...123 cc

GPM 11-05-2019 06:59 PM
What compression ratio

jdf4068 11-05-2019 07:09 PM
Originally Posted by GPM (Post 4713794)
What compression ratio
9.5

GPM 11-05-2019 07:26 PM
Not sure the difference between solid flat tappet and what you're going to run but a Bullet 246 /254 made 540 HP 520 torque in a 468 at 6200. The 496 stroker would probably make more and top out at 5800.

GPM 11-05-2019 07:28 PM
I'm sure Bullet could make you a nice cam, techs seem to be decent.

Baja Rooster 11-05-2019 08:39 PM
22 post and no Bob M reference? Slackin’!

I’d look at the Airgap dual plane intake. It seems to outperform any single plane until you get over about 555cu plus.

jdf4068 11-05-2019 08:55 PM
22 post and no Bob M reference? Slackin’! Lmao. What ever happen too him ....

phragle 11-05-2019 09:36 PM
Originally Posted by Baja Rooster (Post 4713811)
22 post and no Bob M reference? Slackin’!

I’d look at the Airgap dual plane intake. It seems to outperform any single plane until you get over about 555cu plus.
No slackers here....read a little closer.....

Full Force 11-06-2019 04:57 AM
Flow the heads if you want to pick the best cam, if not you are guessing what you need....

flashgordon 11-06-2019 06:24 AM
Originally Posted by sutphen 30 (Post 4713759)
3/4 race cam for sure.:D
yea for sure A 3/4 RACE CAM

love hearing that from people ,,showed what they knew in 3 words....hahahah

i would go with a FULL race cam
my cam roller solid red zone lifters
http://iskycams.com/shop/index.php?m...roducts_id=702
head are 14044861 bow tie heads flowed by carl foltzhttp://www.cferacing.com/
1050 carb..
so far highest i pused motors was 5600

Full Force 11-06-2019 04:17 PM

jdf4068 11-06-2019 06:02 PM
Originally Posted by Full Force (Post 4713931)
now thats funny ,,,i dont care who you are ,,,loll

hogie roll 11-06-2019 06:54 PM
Not bad, could use more lift though.

sutphen 30 11-07-2019 06:04 AM
Originally Posted by flashgordon (Post 4713837)
yea for sure A 3/4 RACE CAM

love hearing that from people ,,showed what they knew in 3 words....hahahah
what do you mean by this?

flashgordon 11-07-2019 06:08 AM
Originally Posted by sutphen 30 (Post 4714002)
what do you mean by this?

people that tell you they are running a 3/4 race cam ................ are idiots.

flashgordon 11-07-2019 06:10 AM
Originally Posted by hogie roll (Post 4713957)
Not bad, could use more lift though.
this comment was for which post??
my cams are 720 lift at rocker.

TylerBurich 11-07-2019 07:47 AM
Originally Posted by jdf4068 (Post 4713754)
thinking abt a cam change what is in there now is comp cam extreme marine 284 hr... spec 230/236. 547/547 lift ..... motor spec. Are stroked 454 to a 496...9.5 to 1 comp ..heads are alum 330 runners. With 2.250/1.99 valves What would y’all recommend
Fellow boater has that same cam in a Coretti 525hp 496 in his formula. Bullet specd the same duration for another Formula on our home lake with 496's. Seems like a popular choice for mild builds, needs more lift in my opinion though.

hogie roll 11-07-2019 10:17 AM
Originally Posted by flashgordon (Post 4714005)
this comment was for which post??
my cams are 720 lift at rocker.
The OP

TomZ 11-08-2019 06:53 AM
And here’s an article giving the history of the 3/4 race cam... for anyone interested:

https://www.enginelabs.com/engine-te...race-camshaft/

phragle 11-08-2019 11:28 AM
If your worried about reversion with a 3/4 race cam, use an RV cam...

thirdchildhood 11-08-2019 12:37 PM
My 1982 Mustang GT was advertised by Ford as having a marine grind cam and made a whopping 157 hp. Now it makes about 450, lol.


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