what clutch and where to get it?

[Micaiahfied]

ok so i've procrastinated, i'm swapping in a NV4500 tranny into my 91 w350 next saturday. by summer i hope to have pods, water meth, and some sort of intercoolers installed, along with the HTT stage III and maybe the 12cm/wg that i have laying around. i would love to be able to do the occasional pull but don't have a huge budget left... what is the correct clutch for this setup? thanks
Mark

[g1625s]

After watching what Wannadiesel went through with his ConO, I think it would be wise to step right up to the ConFE, more for the 13'' size than the holding power. It still won't tolerate slipping, even for the occasional pull, but will hold just about anything else you can throw at it.

[stillsmokin]

The con OFE does well for occasional sled pulling as well. My getrag is still holding up somehow too! But, I need to get to the dyno soon. I'm worried as I'm losing traction in 5th passing cars under 70 mph . I think I to need to swap in a NV4500 big shaft and the south bend pulling dual disk.

[KTA]

I like the Hailsey street puller for sled pulling. As for the getrag dying, I was surprsied to do a side by side comparison with an NV4500. The getrag has bigger gears than the Nv4500, but the getrag drawback is it has puny little bearings. While the small bearings are a killer in every day use and trailer pulling, I think they can be fine in competition.

[stillsmokin]

I don't know much about that haisley clutch, I've seen his truck on video though, WOW! I think the real drawback of the getrag is the automotive sized gear engagement teeth. It wouldn't be a real problem until big torque numbers. Also there is no big input shaft for the rag so I can't run dual disk. The NV4500 shifts easier, has a nicer gear spread, engagement teeth are larger, and there is a larger input shaft available.

I just need to find a core around here so I can build one with a big input, cast iron adapter, and heavy 5th. I'll call it the NV4500SD.

[KTA]

You can get plenty of 1 1/4 dual disk clutches. We had dual disk clutches back in 1997 before there even were any big input shafts. LOL Van Haisley can tell you they have never had a stock input shaft broke sled pulling, it is always on the street where they meet their demise. When you are playing in the dirt you have alot more give between the tires and the ground than on the road, its those sidestepped burnouts that kill the input shafts. As for gear engagment teeth i assume you are talking about the syncros in the trans, they arent really that much smaller if any than a 4500, actually 1st and 2nd are alot bigger syncro in the rag than the 4500. I do have a NV4500 with the cast tailhousing in the 93 in my sig. The smaller gap in the 2-3 shift is alot better in the 4500 than the getrag.

[Micaiahfied]

i think i had someone recommend the haisley street puller to me... does it require the larger shaft? and any idea about how much they run and where i can get the best deal?

[KTA]

Call Haisley Machine at 1-877-948-3164. Talk to Van if he is there if not Patty can help you just tell her what you are doing and that Brian Block sent you and they will guide you in the right way for shure. They are a small shop and are really busy so it can be hard to get ahold of them, but just keep trying you will be VERY satisfied with the product.

[Micaiahfied]

KTA, hey, i gave them a quick call and talked with patty. i only asked for prices on the street puller, i am sure it's a great product but it's way out of my budget cababilities right now. especially since she said i'd need the input shaft. i understand the concept of "you get what you pay for" if need be i can refrain from pulling this year until i can afford something better but i'm afraid that with upcoming mods i am going to be slipping the stocker like crazy if i leave it in.

[KTA]

The stocker is usally good to around 800ft-lbs. You might try TST they used to sell a button single disk for $250 that used the Sachs cover and was rated for 1000ft-lb. I put a few of them in 2nd gen trucks and they held like crazy, but were very grabby. I wouldnt recommend slipping one to pull with, but they would hold the power for low $$$.

[stillsmokin]

Mine stocker held a 90 foot pass with 2 turns on the pump and a 16cm housing . I think they get pretty worn after 200,000 mile or so, heck mine only pulled a 16 foot aluminum boat occasionally and was a daily driver.

[Micaiahfied]

my stocker was slipping with pump mods and timing bumb. 198ft when it started to hop, truck only has 51k miles on it though.

[KTA]

I was referring to holding engaged power not sled pulling. A tocker doesnt take well to sled pulling even at stock levels, seems it wasnt made to do that. LOL

[PSUCE]

The TST clutch, for the money, isn't bad at all. It will hold more than the Centerforce. But as KTA said don't truck pull, they don't like being slipped while hooked to a sled.