Magic Stick4 Piston to Valve Clearance

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Aug 10, 2007 | 03:08 PM

6.0mcSS

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Magic Stick4 Piston to Valve Clearance

I have a 6.0 LQ4 with MS4 cam and ls6 heads. i have about 54 thousanths is that enough p to v clearance?

Aug 10, 2007 | 05:18 PM

Flaco

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From: Across the neighbors

no, you need about .100 int/ .080 exh atleast.

is that with gasket compressed? if no, the gasket is .053 compressed

Aug 10, 2007 | 05:18 PM

nobreaks254

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no, I think you need about twice that

Aug 10, 2007 | 05:28 PM

00 Freak

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I think it's .080 int and .100 exh

Aug 10, 2007 | 05:33 PM

NHRAFORMULA00

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.080 intake-.100 exh these are the bare minimum with the clearance being checked properly!!!

Aug 10, 2007 | 05:49 PM

6.0mcSS

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this was with a .40 gasket my i have L92 gaskets which are thicker

Aug 10, 2007 | 05:50 PM

6.0mcSS

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im hoping it gives me enough clearance

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Aug 10, 2007 | 07:19 PM

Quik

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where did youcome up with that? i thought it was around .077

Aug 10, 2007 | 08:21 PM

#10

cbrtrx

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that is a very tight fit but it has been done before, ive clayed a few setups with cams around that size and the ptv was about the same, im not saying its safe or anything but these cars with ptv that tight are still running if that helps you at all, my last set up had .065 intake and .085 exhaust and i shifted at 6,700 rpms i pulled the heads off after many miles and there was no ptv issues at all

Aug 11, 2007 | 12:09 AM

#11

6.0mcSS

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thanks for all the help guys i appreciate it ill post when i have it running and hopefully it doesnt blow up!!!!

Aug 11, 2007 | 11:12 PM

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heavy6.0

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you should be fine!

Aug 11, 2007 | 11:23 PM

#13

PREDATOR-Z

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From: BFE

It will run, as long as you valvetrain is under control, a bit of valvefloat or a boken outer spring and Sionara to the motor.
the clearances you have are race clearances and not daily driver

Aug 12, 2007 | 01:05 AM

#14

juiSSed1172

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From: Orlando, FL

Don't miss a gear.

Aug 12, 2007 | 03:34 PM

#15

davered00ss

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I believe you have to flycut with that cam. A friend of mine installed that cam 1 tooth off on the gearset and blew his motor. Not a lot of room for error with that cam.

Aug 12, 2007 | 04:22 PM

#16

juiSSed1172

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Quote:

Originally Posted by davered00ss

I believe you have to flycut with that cam. A friend of mine installed that cam 1 tooth off on the gearset and blew his motor. Not a lot of room for error with that cam.

You don't have to flycut with stock heads & stock gaskets. You just have to install it correctly.