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performance cams and power brakes

This is a discussion on performance cams and power brakes within the Internal Engine forums, part of the LSx Technical Help Section category; Thought I'd ask the people on here who have ms3,ms4 or cams with big duration and lift if they had ...

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    Member importhater81's Avatar
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    black
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    performance cams and power brakes

    Thought I'd ask the people on here who have ms3,ms4 or cams with big duration and lift if they had any issues with not enough vacuum to operate power brakes at idle.If so how did you fix it?..vacuum pump?

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    Slow'er'Ass Mr. Luos's Avatar
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    Not a problem here.

    248/254 629/622 113

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    Member importhater81's Avatar
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    black
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    Is that advertised duration or at .050 lift?

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    Slow'er'Ass Mr. Luos's Avatar
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    Advertised is 297/306


    Specs listed are at .050"

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    cutting and welding mark21742's Avatar
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    hugger orange
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    I'm glad you two asked and answered this, I was wondering what to expect when my new cam goes in

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    Quote Originally Posted by Mr. Luos View Post
    Not a problem here.

    248/254 629/622 113
    What other mods do you have and where does this cam make its power at? Any idle problems?

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    cutting and welding mark21742's Avatar
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    hugger orange
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    Quote Originally Posted by scubamark3995 View Post
    What other mods do you have and where does this cam make its power at? Any idle problems?
    also what rpm do you shift at MrLuos?
    mines smaller and rated at 3,000-7,000 and figured I'd want to shift around 7,200-7,300 to start out?

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    SOM
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    Quote Originally Posted by mark21742 View Post
    also what rpm do you shift at MrLuos?
    mines smaller and rated at 3,000-7,000 and figured I'd want to shift around 7,200-7,300 to start out?

    What did you decide on doing rodbolts???

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    cutting and welding mark21742's Avatar
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    hugger orange
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    Quote Originally Posted by SOMbitch View Post
    What did you decide on doing rodbolts???
    Katech, they should be at the house today.....i dropped the oil pickup bolt......and a 10 mm wrench in the oil pan so its already unbolted, just need to drop the K member (6-8).....id be dumb not to do it now lol

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    SOM
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    Quote Originally Posted by mark21742 View Post
    Katech, they should be at the house today.....i dropped the oil pickup bolt......and a 10 mm wrench in the oil pan so its already unbolted, just need to drop the K member (6-8).....id be dumb not to do it now lol
    I am so jealous Good choice on the Katechs and glad to hear you can get them now..... They were hard to find when I was looking......

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    cutting and welding mark21742's Avatar
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    hugger orange
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    Quote Originally Posted by SOMbitch View Post
    I am so jealous Good choice on the Katechs and glad to hear you can get them now..... They were hard to find when I was looking......
    I got their number off their website....called and ordered the bolts directly from Katech

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    Quote Originally Posted by mark21742 View Post
    I got their number off their website....called and ordered the bolts directly from Katech
    Even Katech was out when I was looking.....Read on another thread their supplier only makes them in runs so they can get scarce sometimes....


    Glad you were able to get them. They are the only bolt I would run without getting the rods resized.

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    NBM
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    I run the MS4 on a 111 and have no trouble with my power brakes. You might have to let them cool down between rounds, but thats about it.
    TSP 347 SB, TSP Stage 2.5 PRC LS6, TSP MS4, Performabuilt Stage 2 4L60E, Yank PT4000, 4.11s, Fast 90/90, FTRA Cold air intake+all the free mods, Dynatech Supermaxx Exaust System, DMH Cutouts, Hooker Catback/FTRA Tips. Tuned by RPM/Garner NC. 11.28@119

  14. #14
    cutting and welding mark21742's Avatar
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    hugger orange
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    I am deleteing the ABS this weekend and was really thinking about ditching the booster and going full manual brakes while I was at it......just relocate the pushrod to give me more leverage

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    Slow'er'Ass Mr. Luos's Avatar
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    Quote Originally Posted by scubamark3995 View Post
    What other mods do you have and where does this cam make its power at? Any idle problems?
    Idle was a bitch at first...once tuned, no problems.
    It is in a 402, so heads, FAST 90/90, forged motor, etc...


    mark21742....I shift around 6600, but our set-ups are completely different.
    Motor has great power from any RPM, but really comes on at 4200.

  16. #16
    cutting and welding mark21742's Avatar
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    hugger orange
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    Quote Originally Posted by Mr. Luos View Post
    Idle was a bitch at first...once tuned, no problems.
    It is in a 402, so heads, FAST 90/90, forged motor, etc...


    mark21742....I shift around 6600, but our set-ups are completely different.
    Motor has great power from any RPM, but really comes on at 4200.
    I figured with the extra cubes your can would come in sooner, but I never thought a cam that size would come in that early even it a big motor like yours.....i take it the added CI effect on cam size goes up exponentialy then? lol I'm still learning stock cube camming

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