The Mariah Owners Club

The Mariah Owners Club (http://www.mariahownersclub.com/forum/)
-   Mercury MerCruiser (http://www.mariahownersclub.com/forum/mercury-mercruiser/)
-   -   Port & Polishing 4.3LX (http://www.mariahownersclub.com/forum/mercury-mercruiser/7628-port-polishing-4-3lx.html)

ColoradoDiablo 11-26-2012 12:21 AM

Re: Port & Polishing 4.3LX
 
Forgot to mention , My 4.3 has a roller cam.
Here is the specs

CAMSHAFT SPECIFICATIONS:
Cam Lift (Int./Exh.): .269/.273

Valve Lift (Int./Exh.): .404/.410

.050" Duration (Int./Exh.): 202/213

Motoxxx43 11-26-2012 02:38 AM

Re: Port & Polishing 4.3LX
 
$143 and 10 for shipping sounds like a really good deal... The cam in my 450F cost a lot more than that...

ColoradoDiablo 11-26-2012 04:02 AM

Re: Port & Polishing 4.3LX
 
I'd be all over it , but it isn't a roller cam.:( The rest of my valvetrain is roller setup(lifters , pushrods , roller rockers , etc)

Oregondunes 11-26-2012 04:40 AM

Re: Port & Polishing 4.3LX
 
Performance Camshafts, Lifter Kits and Matching Valvetrain for 6-Clylinder Chevy - Edelbrock.com

Products > Automotive > Camshafts > Ch. 4.3L 90D V6 92-02

Engle Racing Cams

ColoradoDiablo 11-26-2012 04:43 AM

Re: Port & Polishing 4.3LX
 
Thanks for the info Oregon. I'll check em out :)

husker_fan 11-26-2012 04:53 AM

Quote:

Originally Posted by mikeyt (Post 40385)
Can u get away with just changing the camshaft? Will you still realize some significant gains?

If its a roller cam, yes. Changing from a stock shaft to something aftermarket is probably one of the best and biggest things a person can do to increase performance.
Compression wise 10:1 pistons are doable pretty easy as deck clearances, head gasket thickness, and head combustion chamber volumes are usually all greater than advertised. Another thing to remember is if you put a bigger camshaft in you may have 10:1 but with valve overlap it may have an effective ratio of only 9:1.


Sent from my SCH-I535 using Xparent ICS Tapatalk 2

ColoradoDiablo 11-26-2012 05:20 AM

Re: Port & Polishing 4.3LX
 
I wish Lunati had the VooDoo cams in roller configuration!

husker_fan 11-26-2012 05:23 AM

Quote:

Originally Posted by ColoradoDiablo (Post 40395)
I wish Lunati had the VooDoo cams in roller configuration!

They do.
Part #20090720 is a good one.

Sent from my SCH-I535 using Xparent ICS Tapatalk 2

ColoradoDiablo 11-28-2012 01:46 AM

Re: Port & Polishing 4.3LX
 
Thanks for all the info guys :)
Decided to shy away from porting the heads and I went with the Edelbrock 3714 cam since I am already running the Edelbrock 2111 intake.

Edelbrock #350-3714
Rollin' Thunder Hydraulic Roller Camshaft
Chevy 4.3L 90° V6
.479''/.488'' Lift
272°/276° Adv. Duration
Idle-5500 RPM Range

Thanks again for all the great info!
I'll post what happens when I get it finished and back in the water come spring.

Oregondunes 11-28-2012 04:27 AM

Re: Port & Polishing 4.3LX
 
great choice. But Im with ya...I hate it. It's winter, the time you want to do upgrades and changes, then you gotta wait til spring to test your results.


All times are GMT. The time now is 11:49 PM.