spoons stang v2, 98gt 2.5krms 2 12s, incriminator, singer, sundown, xs, crescendo

[omg_spoon]

do you get any belt slippage?

ive always had belt slip when high rpm shifting, but i havent noticed anything abnormal. nothing at idle or regular driving.

[walwalka]

My buddy gets some belt slip at high rpm/hard throttle around is S/C pulley. Seems to be normal with these cars.

[boom50cal]

I know that the truck motors have bad as fuck belt slippage with high-amp alts under load because ford's awful pulley setup

[omg_spoon]

fucking fords lmao

[boom50cal]

"Oh hay ford engineer lets give an alternator pulley less than 30% of coverage area that'll work FUCKING AWESOME"

"FUCK YEAH OTHER FORD ENGINEER FUCK HORSES AND GET MONEY"

[walwalka]

To be fair. For the way it was designed, it works just fine.. It wasn't designed to have a H/o alt.

[boom50cal]

I could argue that. Even a stock motor will cause slippage on the alt pulley. Stock 5.4 2 valve in a 03 F150, SCT Tune, slips out of 1st and 2nd at 6200 rpm while in 4wd. Mechman makes a nice dual idler kit although. Trying to talk my dad into buying it, but we don't spend enough time offroad to really justify it.

[OrionStang]

Small idler pulleys can be attached to the bottom mounting bolts of the alt. Doubles belt wrap on the alt. Just need to find the right size belt.

[OrionStang]

Got wrap?

Thats a 370XP on my buddy Jon's 2000(?) GT.

[walwalka]

I could argue that. Even a stock motor will cause slippage on the alt pulley. Stock 5.4 2 valve in a 03 F150, SCT Tune, slips out of 1st and 2nd at 6200 rpm while in 4wd. Mechman makes a nice dual idler kit although. Trying to talk my dad into buying it, but we don't spend enough time offroad to really justify it.

There again, it's not stock. It's been modified. The 5.4 in my truck has never slipped a day in it's 220k mile life.