lifting heads

Mustangless

Member

Jun 27, 2003

903

1

18

home

Mar 6, 2009

#1

• Mar 6, 2009

• #1

I have been running 8lbs for a while now. It will not get me to my goals of 11s, so I was thinking about trying more boost. 12lbs is probably as high I will take it. If that does not get me there, I will just be happy with 12s.

I have stock head gaskets and stock bolts (valve covers never been off). Is 12lbs going to be too much?

 

Yobi1Kanobi

Member

Apr 9, 2003

559

0

16

Mar 7, 2009

#2

• Mar 7, 2009

• #2

There are alot of people around here that have run 12# on stock healthy motors. But IMO that does start cutting down the life...

 

BlownFiveLiter

have car, will race....wait, it doesn't run

15 Year Member

Nov 29, 1999

3,133

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108

Chicagoland

Mar 7, 2009

#3

• Mar 7, 2009

• #3

If you're really concerned, you can buy some ARP studs and change them out one at a time, without sacrificing the head gaskets. The biggest issue with getting higher into boost with stock heads is that the deck thickness allows them to literally bend and you end up losing the gaskets anyway. How high of boost can you safely run with them, I honestly can't really say, since I don't know the answer.

 

parrish5o

New Member

Dec 22, 2008

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Dirty South

Mar 7, 2009

#4

• Mar 7, 2009

• #4

12s are no problem with the stock bottom end. Can you run 12lbs of boost, well that may be pushing it a little bit but I have seen it happen before. Just not for long. The ARP studs will be better than the stock bolts, but mearly a band-aid for the bigger problem.

 

Zero_chance

Founding Member

May 29, 2001

1,243

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59

Maricopa, AZ

Mar 7, 2009

#5

• Mar 7, 2009

• #5

What are you running right now with your current setup?

 

OrangeMustangGt

Founding Member

Mar 7, 2002

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Cape Cod, MA

Mar 7, 2009

#6

• Mar 7, 2009

• #6

yeah, you will be fine bottom end wise with up to 12 lbs IMO..... HOWEVER...

After doing 4 headgaskets in a row, I learned quickly;

ARP studs! Cometic MLS headgaskets!! havent had a problem since... with my twin turbos or nitrous!

 

Venom351R

Founding Member

Apr 27, 2002

4,548

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98

MAINE

Mar 8, 2009

#7

• Mar 8, 2009

• #7

OrangeMustangGt said:

yeah, you will be fine bottom end wise with up to 12 lbs IMO..... HOWEVER...

After doing 4 headgaskets in a row, I learned quickly;

ARP studs! Cometic MLS headgaskets!! havent had a problem since... with my twin turbos or nitrous!

Click to expand...

Kyle I noticed your in Mass, you should really come up to Epping this summer Id love to see you car. Come over here as well we would love to have you

http://horman.dyndns.org:82/bor/forum/index.php

 

OrangeMustangGt

Founding Member

Mar 7, 2002

1,976

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36

Cape Cod, MA

Mar 8, 2009

#8

• Mar 8, 2009

• #8

cool, thanks. I do want to go up again to epping. I only raced the car once and it was n/a then. Would love to see how it runs with nitrous! Ill check out those forums

 

99FiveOh

15 Year Member

May 20, 2006

2,051

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99

J-Ville, FL

Mar 8, 2009

#9

• Mar 8, 2009

• #9

I was seeing 15psi in my old S/C'd 95 with stock gaskets still in place. Didn't lift the heads once, but I'm sure I was on borrowed time though.

12psi should be ok.