question about under drive pulleys

[Youngblood]

im looking into buying a set of under drive pulleys for my marauder. but the merc has the clutch on the alternator. so im guessing i wont be using the alt pulley? and since ill only be using the 2 pulleys will i still be using the stock belt?.also i was told i should have the idle raised about 200 rpms when i do the tune... and what type of hp gains will i be seeing?

[Blackened300a]

im looking into buying a set of under drive pulleys for my marauder. but the merc has the clutch on the alternator. so im guessing i wont be using the alt pulley? and since ill only be using the 2 pulleys will i still be using the stock belt?.also i was told i should have the idle raised about 200 rpms when i do the tune... and what type of hp gains will i be seeing?

Pulleys are a good start they definitely do make power. Leave your alternator pulley alone and you can use the stock belt. For voltage issues, the idle should be bumped up.

[FordNut]

About 10 hp gain.

[musclemerc]

They are worth a gain in HP for the money. Go with a Gatorback belt and get a tune ASAP to compensate for the voltage drop. Make sure the pullies have the longer bolt with them for the install.

[fastblackmerc]

What they all said.

[Granite]

where can i get the longer bolt, i got a set a while back but i didn't have the longer bolt

[Blackened300a]

where can i get the longer bolt, i got a set a while back but i didn't have the longer bolt

Contact Steeda, they will send you out a new one right away. Do not attempt to do the install without it unless you have a pulley installation kit.

[musclemerc]

And let's not forget the stock bolt is TTY.

[Granite]

thanks blackened, what's TTY musclemerc?

[musclemerc]

Torque To Yeild. Which kinda means it a one time use bolt.

[Blackened300a]

thanks blackened, what's TTY musclemerc?

Torque to yeild. There is a 3 step torque process that makes the bolt stretch a little when installed. It also makes the bolt a one time use only bolt.
Make sure you replace the crank bolt as well.

[Granite]

ah, ok, great explaination it makes sense, but doesn't seem practical at the same time, lol

[Youngblood]

what would be a good bump up in idle to compensate for the pullies ?

[Bradley G]

I left mine (idle) alone and never had a problem.

[Blackened300a]

what would be a good bump up in idle to compensate for the pullies ?

I think the stock in drive idle was 650 I have mine at 750 and my in park idle is about 950

[SC Cheesehead]

i think the stock in drive idle was 650 i have mine at 750 and my in park idle is about 950

^^^^^^ +1 ^^^^^