jcoker

iTrader: (17)

My belt contacts the lower alt. bolt.

nemss1

ive heard of people having this problem and leave the lower alt bolt out or trim the head of the bolt

the_merv

iTrader: (88)

^^I've seen that done.

nemss1

u using the stock crank pulley?

jcoker

iTrader: (17)

Its an underdrive, I may grind the face of the bracket a little so I dont have to cut the bolt down so much.

nemss1

ya underdrive pulleys can cause that prob. ya thats what id do, find what is making contact with the belt and grind'r off

chrs1313

iTrader: (24)

i removed the bolt...just to post this again it absolutely gained nothing in back to back runs...

nemss1

very true chris, no gains. i removed mine because i do remove just about everything i dont need for the car to run down the track

Z28/2002

iTrader: (27)

I had to trim the bolt as well

jcoker

iTrader: (17)

I'm just trying to get the weight down and I don't drive the car on the street very often. (looking for that 9 second motor pass)

Intercooler2

iTrader: (24)

I know it has been a while for this thread. I have a 25% underdrive now and was pondering the short belt bypass so dug this up to find the part number. In reading here I wonder if anyone had a gain. Seems a guy I saw at the track one time said yes. Instead of spending the $18.00 I was thinking just yank the A/C belt.... zero $$$ to do and see. Thoughts on this?

Intercooler2

iTrader: (24)

Not turning the A/C and bypassing the powersteering has to help just a little right? Might not be but 5 HP but still

Ls1Rook

iTrader: (1)

Did anyone else try this

LS1nut377

iTrader: (16)

im thinking about doing this in a couple of weeks for track day. but im not sure yet. a buddie of mine did the short belt mod on a dyno with heads and cam and pulled 10rwhp
from it on a dyno.so i dont know. might be worth it for track day

Ls1Rook

iTrader: (1)

Do it let us know, i might try it too

Gray86hatch

iTrader: (83)

Has anyone found a ribbed idler pulley to go on the alt bracket?

I have my advance auto girl working on it for me monday.

For the belt to bolt issue what about a 5 rib belt.

I have this on my ford motor with no issues

Tim

LS88FoxBody

iTrader: (2)

I have a 5.3 I'm putting in a fox body. Looking to go with a manual Rack. Currently Have a Truck water Pump ,and all other normal accesories. Can I get away with just going with the F body alternator bracket or do I need to change other stuff?

Gray86hatch

iTrader: (83)

I know that the balancer needs to match the alt braket.

Not sure on the WP.

I am Just modded the bracket the other night for the belt to bolt clearance. As soon as I get the crank in the block I will have it mocked up to verify all the fitment.

Tim

01ssreda4

iTrader: (96)

If its not even 5 hp then why bother. Why not leave it alone and just enjoy racing your car? Just a thought.

Intercooler2

iTrader: (24)

Yea that was an old post. I just took off the A/C belt and left it as-is. Not worth the trouble!