Re: POSI vs SPOOL
 

I have a MW lite-weight steel spool in my Dana 60 and as Ed says, there's a reason. I'm not giving up strength / deflection for a small advantage (if any). But I believe the small engine / no HP car is the one I would use the lite-weight parts on. I've seen some impressive results on a V6 stocker by going this route; especially what I said about slick size.

Re: POSI vs SPOOL
 

I agree about the tires. I can't see lugging those big suckers down the track (SS) if you can hook with smaller, lighter tires.

Re: POSI vs SPOOL
 

What Billy said is the best use of $$ spent. Light wheels and small diameter tires will make a noticeable difference. Since those things have to be purchased anyway, buy what works best. The other lightweight axle parts may or may not make a noticeable difference and cost a lot of money. Loosening the preload on the carrier bearings and pinion bearings makes a noticeable difference, especially in MPH, and just costs time.

If you are going to race a low powered dime rocket, you will be miles ahead to learn how to work on everything - short block assembly, heads, carburetor, suspension, transmission, rear end, brakes, steering. Tweaking here and there, you never know what you will find. Plus, that's where a lot fun and satisfaction is found.

Re: POSI vs SPOOL
 

its call a locker
know many guys using then in stock
i have one in my cyclone for 41 years never, have boken it

Re: POSI vs SPOOL
 

i see to many cars with posi's smoke one wheel in the burn out box , once that happens the rear is done that alone is reason to run a spool gmonde

Re: POSI vs SPOOL
 

The FASTEST rear end is an OPEN rear end. Obviously will not work on a car with good power but for a dime rocket I am thinking of trying something. The problem I have experienced with a open rear is in the water the right rear spins. Then you pull out and stage and leave and the left rear will spin (least amount of traction). The only idea I have come up with is a Open Spool. However since Ed mentioned he wiped the left side splines and that is typically the axle that breaks -- I have to determine if the left or the right axle should be actually engaged??? This is for a combo that can barely do a burnout of course.

Re: POSI vs SPOOL
 

Daran, an open rear wants to spin the right rear tire because of engine torques affect on the axle housing. The rotation of the engine tries to lift the right rear and plant the left rear. to do what you are wanting to do, you would want to engage the left rear.

Re: POSI vs SPOOL
 

Thanks Billy, now I need to see if I can get the Impala to U weight? :) You missed last nights U/SA shootout in Orlando 4 cars 112 degrees alot of fun!!!

Re: POSI vs SPOOL
 

For a low cost, low HP car I would suggest a Locker with 35 spline axles unless it's a stick car. I ran one in my Max Wedge car for a few years and it did well.

JimR

Re: POSI vs SPOOL
 

Man, I love the idea of a one wheel wonder spool. You could run a slick on the drive side and a front runner on the other side. It would take some creative alignment but it might really fly!

Chris Barnes
Wagons of Steel!
Stock 6621