G Body Rear End for 650 HP

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Old February 9th, 2022, 07:23 PM
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G Body Rear End for 650 HP

Looking for something that can hold up and never fail. For the Nascar DX block that being built. Bill thinks approx. 650 HP 8,000+ RPM. Will be selling 8.5 in the car now. !2 bolt, 9'' ford or Strange S60.
Strange S60 is only 20# over the other ones. But 9.750-inch-diameter ring gear.. I will never break this one. Its DANA like, with lighter housing.. My old 85 Ford F350 dually, built in Canada had a Dana rear. I worked it to the max.
Only thing I did to it was replace the pinion bearing and seal, after years of hard service. The internals where huge.
Strange S60 Specs: $2,339.00
9.750-inch-diameter ring gear
35-spline axles
Proprietary, reinforced center section casting
Gear ratio options from 3.54:1 up to 5.38:1
Standard Trac-lock differential upgradable to Helical gear or Detroit Locker
3-inch axle housing tube diameter

Strange S60 Rear End With GM G-Body Spring Mounts 35 Spline Alloy Axles and Trac-lock Differential
https://www.strangeengineering.net/p...g-mounts.html/

Last edited by HighwayStar 442; February 9th, 2022 at 07:26 PM.
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Old February 9th, 2022, 07:50 PM
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A built 8.5 is supposed to be very stout. I don’t think it would mind 650hp in a street/strip car.
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Old February 9th, 2022, 08:00 PM
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Good choice, it is supposed to be very strong. You should be able to get 1/2 the cost back on selling your G body 8.5".
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Old February 9th, 2022, 08:35 PM
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Had I not gotten a good deal on my built 8.5 I would have gone with the S60. Strange is 30 min from me and cash deals always get better pricing and I know a few people to sweeten the deal. The price I had gotten on an s60 for my 72 was 2600 which is a killer deal for my needs and what I wanted option wise . There is many benifits to the the strange design which is making the S60 the current choice for cars making power. Less drag over the ford 9 being the biggest one.
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Old February 10th, 2022, 11:02 AM
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Originally Posted by young olds
A built 8.5 is supposed to be very stout. I don’t think it would mind 650hp in a street/strip car.
I read where it can be, with the right parts and welding etc. Mine is nearly mint and rebuilt a few thousand miles ago. Just want to be sure, I do not destroy it. A 100 hp shot of nos. May just kill it.
S60 is good for 900 to 1000 hp. Lots of wok, I raised price I get payed per fire sprinkler head a $1 more. One 2,500 head job pays for it.



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Old February 10th, 2022, 11:21 AM
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Originally Posted by HighwayStar 442
I read where it can be, with the right parts and welding etc. Mine is nearly mint and rebuilt a few thousand miles ago. Just want to be sure, I do not destroy it. A 100 hp shot of nos. May just kill it.
S60 is good for 900 to 1000 hp. Lots of wok, I raised price I get payed per fire sprinkler head a $1 more. One 2,500 head job pays for it.


when yu went thru the 8.5 did you upgrade from stock 28 spline axles to a 30 or even a 33 spline axle with a new Eaton Tru Trac diff / + braced cover ? A 33 spl 8.5 would hold it easy

Can't knock the Dana 60 though, simply awesome

Last edited by GEARMAN69; February 10th, 2022 at 11:26 AM.
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Old February 10th, 2022, 12:07 PM
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What's making the S60 so much more valuable is the fact the strange case I believe has built in spreaders where as the original Dana's you needed a case spreader and the guys who know how to do them right either are dying off or just not worth making them work anymore. But for the price of a new one it's a no brainer.
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Old February 10th, 2022, 01:56 PM
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My 85 ford dually had a Dana 70HD. Removing the 8 bolts on the axle's outer hubs. You can remove the axles to replace brakes. Pulling off the brake drum required a special tool to remove the hub nut.

Pinion bearing and seal replacement did not require a case spreader. But you better eat your Wheaties. To pull that heavy gears out of that pumpkin!

Putting back together you needed the tighten the pinion nut and crush the crush sleeve. Did no get it right the first time. Would whine. Had to put a 7 foot piece of pipe over a 3/4'' Harbor freight racket. To get it right something like 370 ft lbs.
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Old February 10th, 2022, 02:03 PM
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Originally Posted by GEARMAN69
when yu went thru the 8.5 did you upgrade from stock 28 spline axles to a 30 or even a 33 spline axle with a new Eaton Tru Trac diff / + braced cover ? A 33 spl 8.5 would hold it easy

Can't knock the Dana 60 though, simply awesome
Never thought I be putting in a 650HP engine in the car. Good parts in the rebuilt. Richmond gear ring, pinion and other parts.
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Old February 10th, 2022, 02:51 PM
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Can't go wrong with the S60.

I've installed a few & never hurt one.
Their helical posi is very nice & street friendly but has held up to lots of drag strip launches on slicks also.
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Old February 13th, 2022, 05:57 AM
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Ford Explorer 8.8. Cut the drivers side down to passenger length and use two passenger axles. Southside machine makes the crown you would weld on for the upper control arm mounts. If you have some welding skills, whole thing can be done for less than $1,000 if you pull the axle yourself.
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Old February 13th, 2022, 06:32 AM
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I've done the 8.8 axle flip job. The 8.8 is just a copy of the GM. 8.5 if you think about it but .3 better lol. No doubt the 8.8 is a cheap alternative but they still have c clips.
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Old February 13th, 2022, 07:12 AM
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Do c clips matter if you have disc brakes? S60 - 9.750-inch-diameter ring gear 35-spline axles, is a no brainer for me. Have been lighting up the car, since day one. S60 20# extra over the rear wheels is fine by me.

Ordered UMI Performance Driveshaft Safety Loops for G body. It bolts in, should give me some protection. Should I get or do something to protect me from the transmission. Will be in the 8,000 rpm range.

The HP DX is heavy. How much I still do not know yet. Bill ordered the crank. Call Bryant Crank- 350 OLDS 61616 3.850 1.890 2.500 3620-16 is 52.3 lbs. Not sure the weight of the SBO ''N'' in car now.

I am 65, life is short. I work hard. Make good money. Can not take it with you.

Have an secret bank account that the old lady does not know about. She know i brought the Nascar engine and Batten heads. And know I building another engine, But has no idea what I am spending.

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Old February 13th, 2022, 07:27 AM
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Originally Posted by HighwayStar 442
Have an secret bank account that the old lady does not know about. ... has no idea what I am spending.
^^^ LOVE THIS!! ^^^ I'm not spending the kind of cash it takes to build a racer, but I have the same gig going as far as funding my resto efforts. She wants to see receipts when I call it "done." I tell her it will never be "done," as there is always something...
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Old February 13th, 2022, 11:02 AM
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I got the ultra bell for my new trans. I run 2 driveshaft safety loops , an engine diaper , it's all money well spend. I also reinforced my seat brackets in case of a roll over. Roll cage is next.
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Old February 14th, 2022, 07:44 AM
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Originally Posted by coppercutlass
I've done the 8.8 axle flip job. The 8.8 is just a copy of the GM. 8.5 if you think about it but .3 better lol. No doubt the 8.8 is a cheap alternative but they still have c clips.
But if you build gm 8.5 out of a 2000's newer 1500 series truck suv chassis its actually a 8.6 so now its only .2 ! haha
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Old February 14th, 2022, 08:10 AM
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Originally Posted by GEARMAN69
But if you build gm 8.5 out of a 2000's newer 1500 series truck suv chassis its actually a 8.6 so now its only .2 ! haha
Is it a Texas thing??? But 8.6 - 8.5 = .1
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Old February 14th, 2022, 08:14 AM
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Originally Posted by HighwayStar 442
Is it a Texas thing??? But 8.6 - 8.5 = .1
HaHa NO...... read Copper's post I quoted... He was comparing 8.5 to F 8.8 is the .3 hence my 8.6 from 8.8 .2
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Old February 14th, 2022, 08:45 AM
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Originally Posted by HighwayStar 442
Do c clips matter if you have disc brakes?.
I've thought about this. Track rules say No C-clips in some time classes no matter what but realistically, that axle ain't goin' nowhere if the rotor is in place.
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Old February 14th, 2022, 09:54 AM
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The caliper anchor points are usually just cast same for the caliper it's self. To say it's totally impossible is risky because there is alot of shear force going on there and side to side movement. A little research can tell you despite having rotors., internally its catastrophicly violent If the broken end goes un noticed.
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Old February 14th, 2022, 10:00 AM
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Back in the day, there was a reason that stick shift Mopars NEVER had rear axle warranty claims. It was the Dana 60!

GM went with weaker units and just paid the warranty claims.
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Old February 14th, 2022, 10:10 AM
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The only reason the ford 9 imo became the unit of choice was simply the ease for on track repairs and versatility. Changing a 3rd member is a breeze.
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Old February 14th, 2022, 10:17 AM
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Originally Posted by coppercutlass
The caliper anchor points are usually just cast same for the caliper it's self. To say it's totally impossible is risky because there is alot of shear force going on there and side to side movement. A little research can tell you despite having rotors., internally its catastrophicly violent If the broken end goes un noticed.
Baer rear brakes anchor point is thick steel. Bend and break a few things. Just to keep the wheel and axe from coming out completely. I want to do rally racing more than drag. C clip eliminators are not for that.

Readied someplace Strange or somebody using thick C clips to keep sideward movement to a minimum? S60 should not break anything anyway.
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