performance cams and power brakes

[importhater81]

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?

[Mr. Luos]

Not a problem here.

248/254 629/622 113

[importhater81]

Is that advertised duration or at .050 lift?

[Mr. Luos]

Advertised is 297/306


Specs listed are at .050"

[mark21742]

I'm glad you two asked and answered this, I was wondering what to expect when my new cam goes in

[scubamark3995]

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?

[mark21742]

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?

[SOMbitch]

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???

[mark21742]

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

[SOMbitch]

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......

[mark21742]

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

[SOMbitch]

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.

[PFM]

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.

[mark21742]

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

[Mr. Luos]

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.

[mark21742]

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