owning both is like having split personalities, haha 
fairly large cam & RPMs question.
Thread Starter
Staging Lane
Joined: Jan 2005
Posts: 79
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From: las vegas, nv
fairly large cam & RPMs question. i was planning on an FM13 cam soon & while looking around it said the powerband was from 2500 to 6800, does this mean i HAVE to spin it that high to get power out of it? can the motor take that? i don't want to grenade the motor since it's a stock bottom end. other than the valvetrain, are there any other precautions i can take?
it's an A4 2000 SS btw.
thanks guys
it's an A4 2000 SS btw.
thanks guys
You won't have to spin it that high if you don't want to. I find that in most of the FM13 graphs I see, the power band stays pretty flat from about 6500-6800, so shifting it earlier won't kill you. If you do want to spin to 6700-6800, it won't kill your motor. Plenty of people, including myself, do it with no problems. ARP or Katech rod bolts are the only real precaution you can take if you want to, but IMO it's really not necessary. Good cam choice by the way, I have a FM11 and love it.
Thread Starter
Staging Lane
Joined: Jan 2005
Posts: 79
Likes: 0
From: las vegas, nv
Originally Posted by LSUxBlake
You won't have to spin it that high if you don't want to. I find that in most of the FM13 graphs I see, the power band stays pretty flat from about 6500-6800, so shifting it earlier won't kill you. If you do want to spin to 6700-6800, it won't kill your motor. Plenty of people, including myself, do it with no problems. ARP or Katech rod bolts are the only real precaution you can take if you want to, but IMO it's really not necessary. Good cam choice by the way, I have a FM11 and love it.
I actually have a question too then, I am leaning towards the F13 for my Trans am actually. All i have is loudmouth with slp lid and bellow, with soon to have hooker headers. I was goin to install the f13 with new springs and a ls6 oil pump and new timing chain. The motor only has 22k on it and would it be ok to spin it up to 6600rpm or 6800rpm with the stock head bolts or is it best to have ARP's? i wont have any roller rockers yet and will have stock heads for awhile. I mean isnt stock redline at 6200rpm?
thx rob
PS-Dont mean to as some people say HIJACK your forum.
thx rob
PS-Dont mean to as some people say HIJACK your forum.
I'd say that 6800 will be fine. Just keep in mind that you are going to shorten the life of your shortblock doing it. I have mine set at 6600 at the moment b/c I'm more concerned about my engine's life than squeezing every last bit out of it.
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Thread Starter
Staging Lane
Joined: Jan 2005
Posts: 79
Likes: 0
From: las vegas, nv
Originally Posted by blkZ28spt
I'm running the MS3 (237/242 .603/.609 113) and currently have shift points set to 6500. It's not optimal or anything, but is by no means terrible.
11 Second Club
Joined: Feb 2003
Posts: 5,524
Likes: 1
From: The South
Originally Posted by loudpipes
hey man, are you only making 343 rwhp with the MS3?? not to diss, that just jumped out at me..
It did run 12.21 @ 111 though. On a 98 with LS1 intake, stock suspension, stock pulley. But still....
Originally Posted by Bigrob339
I actually have a question too then, I am leaning towards the F13 for my Trans am actually. All i have is loudmouth with slp lid and bellow, with soon to have hooker headers. I was goin to install the f13 with new springs and a ls6 oil pump and new timing chain. The motor only has 22k on it and would it be ok to spin it up to 6600rpm or 6800rpm with the stock head bolts or is it best to have ARP's? i wont have any roller rockers yet and will have stock heads for awhile. I mean isnt stock redline at 6200rpm?
thx rob
PS-Dont mean to as some people say HIJACK your forum.
thx rob
PS-Dont mean to as some people say HIJACK your forum.
2 - head bolts don't matter, nor do the rockers. stock do just fine.
3 - you already have roller rockers. you just have stock roller rockers.
/* if you're going to upgrade any bolts during a swap, upgrade the rod bolts w/katech bolts. they don't seem to have any issues w/warping the rods. */
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From: Gainesville, Denton TX
Originally Posted by cyphur_traq
/* if you're going to upgrade any bolts during a swap, upgrade the rod bolts w/katech bolts. they don't seem to have any issues w/warping the rods. */
I have my shift light set at 6600, so I imagine with my slow non driving/shifting skills Im shifting at 6800 or there abouts...
F14 btw.