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Author
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Topic: Should I go to Nodular
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662+2
Gearhead Posts: 202
From: Ontario, Canada
Registered: Jan 2003
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posted 10-17-2006 09:15 AM
 
I am putting a 460 crate motor in my 72 coupe for dragracing only and was wondering if I should change the minispool and 28 spline axels and standard 9" case. If so what are some recomondations.
Thanks
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Ryan Wilke
Gearhead Posts: 3237
From: Stanton, Michigan, zip 48888
Registered: Oct 2000
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posted 10-17-2006 09:42 AM
"For dragracing only" probably means you'll be using a hard-hitting trans, traction bars of some sort & some sticky slicks. Also considering that you're NOT talking about a 2400# T-bucket hot rod, but rather a fairly hefty ~3400+ lb. door car, the question is, "How close to the edge are you willing to stand?" Sure there are folks that have made some passes with your rearend package behind a big-block in race trim - but to lean toward the safer/less breakage side, I'd suggest you step up to at least 31-spline axles (preferably aftermarket Moser, Strange, Mark Williams, etc.), a nodular or improved design aftermarket carrier case, possibly a daytona-style pinion support, and a aftermarket full spool. How about some springs & shocks too? Yep, a fairly pricey upgrade,,, but you already knew that building a dragrace only big-block '72 Stang would be, right? Good Luck!
Ryan 
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Greg Pettit
Gearhead Posts: 162
From: Denton, TX
Registered: Nov 2001
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posted 10-17-2006 10:19 AM
I say upgrade if there's going to be any doubt.I ran a stock 9" case with a detroit locker and Moser 31 spline axles in my Torino. Started getting nervous about the stock case, so I got a Strange nodular case to install. When I removed the stock case, here's what I found:   The broken piece of case was still attached until I slid the pinion out, and then it fell to the floor! Imagine what would have happened if that piece had actually got caught up in the ring and pinion at the track? I say upgrade while you can.... Greg ------------------
'71 Torino GT 545 stroker, Ported Edelbrock CJ heads, 11.8:1 compression, Victor intake with 850 DP, TCI streetfighter converter, 3.89 detroit locker, full interior with A/C [IMG]http://i80.photobucket.com/albums/j168/point92mach/FM_avatar.jpg[/IMG]
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662+2
Gearhead Posts: 202
From: Ontario, Canada
Registered: Jan 2003
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posted 10-17-2006 11:06 AM
I already have drag shocks and cal-tracs and 30"x9 drag slicks. I have been drag this car before but with 351w running in the mid 12's. My car weight is about 2900 without driver
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Ryan Wilke
Gearhead Posts: 3237
From: Stanton, Michigan, zip 48888
Registered: Oct 2000
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posted 10-17-2006 12:15 PM
Greg,
Isn't that the carrier you had for sale on EBay? 
662+2,
2900 lbs is a pretty good weight for a '72 (without driver), but you KNOW that figure will go up quick with the addition of the 460 crate engine, which will probably be about 120# more than your current 351W. So, adding that to the approximate driver's weight, (180lbs?), you're knocking on the 3200lbs door. You didn't mention if you had frame connectors or rollbar/cage... with the increased HP and torque, if you haven't got them, you may want to consider adding them as well, to keep your car straight and to help transfer the new power to the ground. Oh yeah, they will add some weight too......
Lastly, guessing that your new 460 crate package will likely generate ~550'#s of torque, an increased torque level of 50 to 100'#s over your current 351W, I still think you'd be smart to upgrade your now basically-stock rearend. You can sell the intact OE parts now; but once they're broke, they don't bring NEARLY the same sale price. Good Luck!
Ryan
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662+2
Gearhead Posts: 202
From: Ontario, Canada
Registered: Jan 2003
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posted 10-17-2006 01:14 PM
I keep assuming that everyone knows what is in my car yes it has cage and frame is tied and your advice is probably nailing it I could get a few bucks for the parts I am replacing but not after they would just make good boat anchors.thanks
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Bloose
Gearhead Posts: 888
From: Milwaukee, WI
Registered: Dec 2001
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posted 10-17-2006 10:32 PM
I'm running a 289 in my '68 Lane and even in mine I'm running 31 spline Strange Axles and Daytona pinion support. I do not have the N case but some day I will upgrade that. You are much better safe than sorry. Stick the $1K in the rear end and be done with it. I've seen too many video's of what happens when the rear locks up at speed on the track, not good. My recommendation would be to go to 35 spline shafts. They are the same price as the 31's and if you go to a aftermarket case you can get the 3.25" bearings for the carrier and run the 35 splines no problem. If your buying an aftermarket case and alloy shafts there is no difference in price than going with the 31 splines. You should also consider a housing brace. HTH,
B-loose
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F551
Gearhead Posts: 284
From: Manitoba, Canada
Registered: Nov 2000
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posted 10-17-2006 10:47 PM
I would upgrade - 460 is all about torque!We run a none N case but with 33 sline Strange Axles, spool, Aluminum pinion support and aftermarket yokes on both ends of the driveshaft. Brother and I were just talking about upgrading the case as this stuff is getting a little old. Breaking stuff is no fun! Better to buy it now than crease up a quarter panel and take out the tree. ------------------
Fred
68 Mustang 500CID/Powerglide - "No Tubs"
86 Mustang GT Cobra
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Greg Pettit
Gearhead Posts: 162
From: Denton, TX
Registered: Nov 2001
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posted 10-17-2006 10:52 PM
According to Moser, 31 splines should be well within reason for a normal stout 460.The axle calculator said that my car was at the upper end of the 31 spline safety zone with 700 ft/lbs and a 4.56 gear. Plus, if a guy is using a small bearing housing, going bigger than 31 splines requires new bearing ends in the "Torino" 72-76 size. Greg
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'71 Torino GT 545 stroker, Ported Edelbrock CJ heads, 11.8:1 compression, Victor intake with 850 DP, TCI streetfighter converter, 3.89 detroit locker, full interior with A/C [IMG]http://i80.photobucket.com/albums/j168/point92mach/FM_avatar.jpg[/IMG]
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JSracing
Journeyman Posts: 91
From: Batesville, MS. U.S.
Registered: Jul 2006
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posted 10-18-2006 12:07 AM
If it were me, I'd get a set of 35 spline Strange axles and spool. Then re-do the nine inch with the new stuff. You might even opt for a new case. new case = 300 bucks. Well worth the $. I think I have an original N case in the shop somewhere with a 33 or 35 spline spool in it, can't remember. anyway I'll look if you want me to. It won't do me any good anyway, I have 40 spline axles. ------------------
JS
Life`s journey is not to arrive at the grave safely in a well-perserved body, but rather to skid in sideways, totally worn out, shouting "holysh....t what a ride!!!"
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Catmando
Gearhead Posts: 340
From: Vermilion, OH USA
Registered: Jun 2004
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posted 10-18-2006 12:11 AM
Last time I checked, Canfield ( as in Canfield heads of Ohio) had thier own nodular cases for around $249.99 for the big bearing. I will be getting one this winter also and probably from them. www.Canfieldheads.com
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662+2
Gearhead Posts: 202
From: Ontario, Canada
Registered: Jan 2003
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posted 10-18-2006 08:00 AM
Thanks guys I will be taking the 3 member and sell it. It has a minispool and 411 gears and also replace the 28 spline axels for 35's I would rather go a little bigger it is hardly any difference in price and I am going with a new case probably just buy 3 member with everything ready to bolt in.
Thanks again
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Greg Pettit
Gearhead Posts: 162
From: Denton, TX
Registered: Nov 2001
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posted 10-18-2006 09:33 AM
Your '72 came with a small bearing axle housing originally.Unless it has been changed out for a big bearing housing, a 35 spline axle will not fit in there. Greg ------------------
'71 Torino GT 545 stroker, Ported Edelbrock CJ heads, 11.8:1 compression, Victor intake with 850 DP, TCI streetfighter converter, 3.89 detroit locker, full interior with A/C [IMG]http://i80.photobucket.com/albums/j168/point92mach/FM_avatar.jpg[/IMG]
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Catmando
Gearhead Posts: 340
From: Vermilion, OH USA
Registered: Jun 2004
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posted 10-18-2006 11:17 AM
If you have any local roundy rounder tracks in your area, list that 3rd member somewhere where a racer will see it. A lot of them will like that setup. They use the mini spools quit often.
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