best UD/ harmonic balancer

[viperkota]

what do you have and how much do you like it?

[otter1363]

I have the Summit 20% pulley, it spins real good.

[crazeejay]

ATI here. I wouldn't trust anything else for the high rpms

[SharaDon]

Ati

[dline]

Ati

[sldhemi]

Yup the ATI is the best, comes already installed on the drag pak cars

[hemi1569]

Ati doesn't make a true underdrive though correct? ati does not make a 20 pecent underdrive correct?

[adamsredlines]

Just remember you have an LX motor and timing cover, so your choices may be different.

[SharaDon]

ATI makes a 25%underdrive for the trucks

Not sure what underdrive the drag pak damper is,, but it's small.

[Hemi345]

I have a ATI as well only I have a 5% OD for my superchager, Hemifever has a SLP on his LX he can chime in on that.

[viperkota]

Just remember you have an LX motor and timing cover, so your choices may be different.

there arent any differences between the two...at least when putting in the vehicle selection for the site.....even ATI just shows 5.7 and 6.1 hemi


which kinda leads to another question...i read where one guy purchased an ATI, but it wouldn't fit his 5.7 (even though it stated for 5.7), but yet a 6.1 pulley is about an 8% reduction for the 5.7...though ATI does have different part number for the 5.7 and 6.1

so is there a difference?

[daytonahemi392]

the cars and trucks are different.

[crazeejay]

My ATI was a super tight fit

[hemi1569]

My ATI was a super tight fit

As Michael Scott would say, "That's what she said" lol

[Onebadbee]

ati is the best

[Blk05Hemi]

I'm sure ATI is the best,but i would'nt sell the summit pulley short.Sfi approved at half the price with the same benifit's.JMO

[hemi1569]

x2

[Onebadbee]

i have the summit andhave shifted at 6300 a couple times so i cant say much for it but otter ran theshit out ofit on a dyno

[Blk05Hemi]

Since i put mine on my motor is so smooth it's crazy.(though it was already smooth) Even accelerating is smoother.Not to say it easier to get to speed because of the definite torque increase you feel.And i still have'nt got to really test it out because of bad weather,we're expecting snow here today in Florida.

[LETHAL HEMI]

since i put mine on my motor is so smooth it's crazy.(though it was already smooth) even accelerating is smoother.not to say it easier to get to speed because of the definite torque increase you feel.and i still have'nt got to really test it out because of bad weather,we're expecting snow here today in florida.

and is this the summit one

[Blk05Hemi]

Yes Ray.If you don't have the summit 20% u/d you need to try it.I think you'll be impressed for the price.I also put on a o/d alt pulley to keep the amperage from falling to much.

[LETHAL HEMI]

yes ray.if you don't have the summit 20% u/d you need to try it.i think you'll be impressed for the price.i also put on a o/d alt pulley to keep the amperage from fall to much.

sweet ill be getting it with income tax...

[white lightning]

New SFI MotoBlue 20% u/d. Good mod! looks similar to the Summit, probably same pulley with different stickers. Summit is $20 ish cheaper. Summit also sells a Trick Flow 20% u/d for Gen III Hemi's.