redline increase advice 6500 rpms

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stanggt00

New Member

Jul 16, 2003

371

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baltimore md

Apr 5, 2008

#1

• Apr 5, 2008

• #1

quick question guys ??

with patriot stg2 heads,comp valve springs ,mph blower cams and mmr900 shortblock

will it be safe to raise my redline from stock to say 6500 rpms

thxs guys

 

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SilverBullet00

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Jul 5, 2004

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Wichita, KS

Apr 5, 2008

#2

• Apr 5, 2008

• #2

I would think so.... but I'd ask your tuner to be sure.

 

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ceracer33

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Aug 30, 2005

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Apr 5, 2008

#3

• Apr 5, 2008

• #3

i would think 6500rpm would be no problem for that combo.

 

blkhorse

Founding Member

Oct 30, 1999

345

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Apr 5, 2008

#4

• Apr 5, 2008

• #4

6500 no problem,with that combo(depending on valve springs) 7000 is not out of the question

 

Tripoli

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Mar 30, 2005

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Dallas, TX

Apr 5, 2008

#5

• Apr 5, 2008

• #5

I did mine at 6500 for over a year. Now it's at 7,000 and holding just fine.

 

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stanggt00

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Jul 16, 2003

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baltimore md

Apr 5, 2008

#6

• Apr 5, 2008

• #6

my other question is are patriot heads still problematic in another forum someone said he heard a lot of bad things about them

i was under the impression that they had improved on there product quality


and thxs for the repleys on the combo looks like i will be able to run the vortech to 6500-rpms no problem

 

CobraRed_96_GT

Active Member

May 20, 2006

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UCSD/La Jolla

Apr 5, 2008

#7

• Apr 5, 2008

• #7

blkhorse said:

6500 no problem,with that combo(depending on valve springs) 7000 is not out of the question

Click to expand...

+1, only thing stopping you from 7krpm would be springs if they aren't made for it

 

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stanggt00

New Member

Jul 16, 2003

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baltimore md

Apr 5, 2008

#8

• Apr 5, 2008

• #8

the comp cam valve springs i got are used for the stage 3 comp cams

spring

seat load 93lbs@1.570

open 198lbs@1.020

spring rate 191lbs/in

 

blkhorse

Founding Member

Oct 30, 1999

345

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18

Apr 5, 2008

#9

• Apr 5, 2008

• #9

those springs sound pretty light for high rpm use,for comparsion, my crowers have 120 seat and around 250 open and 7000 is about their limit

 

jivepepper

Founding Member

Jun 19, 2002

776

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Under a Sombrero. in WV.

Apr 6, 2008

#10

• Apr 6, 2008

• #10

I do 6400-6500 rpm shifts at the track all the time.

I have the mod 900 sb, stock heads and valve springs. with HP cams.

In May I'm with MMR stage 3 heads with SS OZ valves, Bronze guides. titanium retainers, and comp high load springs with 120lb seat pressure.

 

Mustang5L5

That is…until I whipped out my Bissell

Mod Dude

Feb 18, 2001

43,221

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Massachusetts

Apr 6, 2008

#11

• Apr 6, 2008

• #11

Do you make power at that high an RPM?

 

jivepepper

Founding Member

Jun 19, 2002

776

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Under a Sombrero. in WV.

Apr 6, 2008

#12

• Apr 6, 2008

• #12

Mustang5L5 said:

Do you make power at that high an RPM?

Click to expand...

My et's and traps say I do. It was still climbing at 6200 at the dyno.. It just feels like it's still pulling.

 

ProCharger GT

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Jun 3, 2004

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Cleveland

Apr 7, 2008

#13

• Apr 7, 2008

• #13

Patriot heads are fine, they had issues a number of years ago but have since gotten better.

 

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jprovence

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May 20, 2007

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Albany, OR

Apr 7, 2008

#14

• Apr 7, 2008

• #14

You biggest issue is the intake just isn't going to flow much up there. Its a big bottle neck. Get something else on there and you will pick up some nice gains.

 

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stanggt00

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Jul 16, 2003

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baltimore md

Apr 8, 2008

#15

• Apr 8, 2008

• #15

thx god finally someone chimes in with a good exp about patroit heads

called mmr shortblock is being shipped out to my house today also call texas hotrods and they said next week heads should be shipped to them then out to me with my $200.00 refund because i payed for stage 3 heads but can only use the stg 2 heads because the block is not .20 over



also did some reading and the springs i have should hold up ok at 6500 rpms not sure just how good the springs that come with the heads are

ps a guy on mph forum is selling me a cobra fuel tank minus the pumps for 580.00 does that sound about rigth