Bolt In 12 Bolt Or 9" Rear - The 1947 - Present Chevrolet & GMC Truck Message Board Network

WhiteStar · 10-30-2008, 04:38 AM

Anyone have Leeds on who Might offer a Bolt in 12 bolt or 9" For a 1970 GMC? I Would Be needing one for an N20 496" Application, w/ spool Heavy axles etc. Also was wondering if theres any benifit to setting a coil over shock set-up on the same? Thanks..

djracer · 10-30-2008, 08:11 AM

I would older a 9 inch from Moser what ever width you wand then do trailing arms coilovers and an anti roll. I think you will have wheel hop with the leaf springs.

swb85 · 10-30-2008, 09:59 AM

I'm really happy with the Moser 9" in my camaro......

WhiteStar · 10-30-2008, 10:29 AM

This Truck is a coil spring rear, it may be a 69 model,but either way I was looking to see if anyone offered a prefabbed bolt in deal?Thanks For the reply or any other insight.

djracer · 10-30-2008, 10:48 AM

Not hardly anyone leaves these trucks stock height and I think the varying ride height would cause pinion angle problems. If you order a housing the right length the only welding would be the pan hard bar and the saddles for the trailing arms.

WhiteStar · 10-30-2008, 11:37 AM

yeah, I allready have a set of trailing arms and a 4-6 lowering kit from CCP,as well as the cross frame bar where trailing arms attach,what the trick to setting the pinion angle if I Get a 9" and weld the mount points on for the trail arms? Get it all in there and tack it where it looks good? I Have a Lift and transjack here at the house so it would be fairly easy.

djracer · 10-30-2008, 02:15 PM

you can probably bolt it up without tacking it till you set the angle with a gauge. You really need a lift that leaves the chassis loaded like they use at allot of muffler shops. Or jack it up and sit it on cinder blocks or wood boxes.

kwhite4 · 10-30-2008, 07:17 PM

I also have a Moser Fab 9 in my truck. Truck had leaf springs but I went with ladder bars that are fully adjustable, works well for me so far.

Garagedude · 10-30-2008, 08:01 PM

I have a 12 bolt eaton posi, richmond gears, moser axles and its held up fine but then again I haven't thrown 700 horses at it either.

djracer · 10-30-2008, 10:35 PM

I have beat on a couple of 9 inches and they are tough.

WhiteStar · 10-31-2008, 03:27 AM

Thanks for the replies.Motor Came off the dyno Today,Wasnt terribly Impressive, 614 Hp at 6000, and 625 Ft Lbs at 4000, Hopefully N20 will get it in The 800HP Range, Trying to go for the sleeper no roll cage,Spare Tire Bolted in the Bed ,Carry The front wheels Past The 60 Ft Beams Look/Approach. We shall see ,I guess.

Ont67shortbox · 11-12-2008, 02:06 PM

Moser,DTS or Currie all make housings to fit our trucks.DTS did the rear for Copperhead,I think they are located in Michigan,Brian

Super73 · 11-13-2008, 12:15 AM

614 Hp at 6000, and 625 Ft Lbs at 4000

You big block guys are making me think I should sell my LS1 and go old school big block. But then again, it is fun seeing the face of some big block guys when I go around them. I thought I was going to get pounded by a very nice sounding big block on spray. Ended up passing him by the 1/8 mile marker.

10-30-2008, 04:38 AM	#1
WhiteStar Registered User Join Date: Dec 2006 Location: Goliad...Texas Posts: 30	Bolt In 12 Bolt Or 9" Rear Anyone have Leeds on who Might offer a Bolt in 12 bolt or 9" For a 1970 GMC? I Would Be needing one for an N20 496" Application, w/ spool Heavy axles etc. Also was wondering if theres any benifit to setting a coil over shock set-up on the same? Thanks..

10-30-2008, 08:11 AM	#2
djracer Registered User Join Date: Feb 2001 Location: Wetumpka, Al, U.S. Posts: 8,892	Re: Bolt In 12 Bolt Or 9" Rear I would older a 9 inch from Moser what ever width you wand then do trailing arms coilovers and an anti roll. I think you will have wheel hop with the leaf springs. __________________ Kevin Special Thanks to All who have helped on the TRUCK! My Pass Time Show http://s129.photobucket.com/albums/p...Chapter1-0.mp4 So Far my best Times are: Motor only: 6.44 1/8 @ 104.13 10.39 1/4 @ 125.83 Nitrous Times: 5.785 1/8 @ 118.65 with a 1.336 60ft 9.168 1/4 @ 142.58 with a 250 shot dead out of the hole!

10-30-2008, 09:59 AM	#3
swb85 On a budget like Fred Sanford Join Date: Oct 2005 Location: Topeka, KS Posts: 2,031	Re: Bolt In 12 Bolt Or 9" Rear I'm really happy with the Moser 9" in my camaro...... __________________ '85 Silverado swb: 383 stroker, 10.5:1, vortec heads, 232/238 roller cam, RPM air gap, performer 750 carb, stainless longtubes, 3" duals/super 44's, T56/4.11 383ci build / exterior refresh thread '98 Camaro z28: 370ci twin turbo 370ci build '01 Tahoe LT 4x4: 5.3, longtubes/ory, magnaflow duals, custom tune....wife's DD

10-30-2008, 10:29 AM	#4
WhiteStar Registered User Join Date: Dec 2006 Location: Goliad...Texas Posts: 30	Re: Bolt In 12 Bolt Or 9" Rear This Truck is a coil spring rear, it may be a 69 model,but either way I was looking to see if anyone offered a prefabbed bolt in deal?Thanks For the reply or any other insight. Last edited by WhiteStar; 10-30-2008 at 10:29 AM.

10-30-2008, 10:48 AM	#5
djracer Registered User Join Date: Feb 2001 Location: Wetumpka, Al, U.S. Posts: 8,892	Re: Bolt In 12 Bolt Or 9" Rear Not hardly anyone leaves these trucks stock height and I think the varying ride height would cause pinion angle problems. If you order a housing the right length the only welding would be the pan hard bar and the saddles for the trailing arms. __________________ Kevin Special Thanks to All who have helped on the TRUCK! My Pass Time Show http://s129.photobucket.com/albums/p...Chapter1-0.mp4 So Far my best Times are: Motor only: 6.44 1/8 @ 104.13 10.39 1/4 @ 125.83 Nitrous Times: 5.785 1/8 @ 118.65 with a 1.336 60ft 9.168 1/4 @ 142.58 with a 250 shot dead out of the hole!

10-30-2008, 11:37 AM	#6
WhiteStar Registered User Join Date: Dec 2006 Location: Goliad...Texas Posts: 30	Re: Bolt In 12 Bolt Or 9" Rear yeah, I allready have a set of trailing arms and a 4-6 lowering kit from CCP,as well as the cross frame bar where trailing arms attach,what the trick to setting the pinion angle if I Get a 9" and weld the mount points on for the trail arms? Get it all in there and tack it where it looks good? I Have a Lift and transjack here at the house so it would be fairly easy.

10-30-2008, 02:15 PM	#7
djracer Registered User Join Date: Feb 2001 Location: Wetumpka, Al, U.S. Posts: 8,892	Re: Bolt In 12 Bolt Or 9" Rear you can probably bolt it up without tacking it till you set the angle with a gauge. You really need a lift that leaves the chassis loaded like they use at allot of muffler shops. Or jack it up and sit it on cinder blocks or wood boxes. __________________ Kevin Special Thanks to All who have helped on the TRUCK! My Pass Time Show http://s129.photobucket.com/albums/p...Chapter1-0.mp4 So Far my best Times are: Motor only: 6.44 1/8 @ 104.13 10.39 1/4 @ 125.83 Nitrous Times: 5.785 1/8 @ 118.65 with a 1.336 60ft 9.168 1/4 @ 142.58 with a 250 shot dead out of the hole!

10-30-2008, 07:17 PM	#8
kwhite4 Junior Member Join Date: Oct 2004 Location: Gatesville texas Posts: 180	Re: Bolt In 12 Bolt Or 9" Rear I also have a Moser Fab 9 in my truck. Truck had leaf springs but I went with ladder bars that are fully adjustable, works well for me so far. __________________ 68 GMC 565 BBC Abruzzi super pro glide 9.85@135.00

10-30-2008, 08:01 PM	#9
Garagedude Registered User Join Date: Aug 2008 Location: Summerville SC Posts: 217	Re: Bolt In 12 Bolt Or 9" Rear I have a 12 bolt eaton posi, richmond gears, moser axles and its held up fine but then again I haven't thrown 700 horses at it either.

10-30-2008, 10:35 PM	#10
djracer Registered User Join Date: Feb 2001 Location: Wetumpka, Al, U.S. Posts: 8,892	Re: Bolt In 12 Bolt Or 9" Rear I have beat on a couple of 9 inches and they are tough. __________________ Kevin Special Thanks to All who have helped on the TRUCK! My Pass Time Show http://s129.photobucket.com/albums/p...Chapter1-0.mp4 So Far my best Times are: Motor only: 6.44 1/8 @ 104.13 10.39 1/4 @ 125.83 Nitrous Times: 5.785 1/8 @ 118.65 with a 1.336 60ft 9.168 1/4 @ 142.58 with a 250 shot dead out of the hole!

10-31-2008, 03:27 AM	#11
WhiteStar Registered User Join Date: Dec 2006 Location: Goliad...Texas Posts: 30	Re: Bolt In 12 Bolt Or 9" Rear Thanks for the replies.Motor Came off the dyno Today,Wasnt terribly Impressive, 614 Hp at 6000, and 625 Ft Lbs at 4000, Hopefully N20 will get it in The 800HP Range, Trying to go for the sleeper no roll cage,Spare Tire Bolted in the Bed ,Carry The front wheels Past The 60 Ft Beams Look/Approach. We shall see ,I guess.

11-12-2008, 02:06 PM	#12
Ont67shortbox Registered User Join Date: May 2003 Location: Ontario Posts: 279	Re: Bolt In 12 Bolt Or 9" Rear Moser,DTS or Currie all make housings to fit our trucks.DTS did the rear for Copperhead,I think they are located in Michigan,Brian

11-13-2008, 12:15 AM	#13
Super73 Registered User Join Date: Nov 2007 Location: Bay Area, Ca Posts: 2,841	Re: Bolt In 12 Bolt Or 9" Rear 614 Hp at 6000, and 625 Ft Lbs at 4000 You big block guys are making me think I should sell my LS1 and go old school big block. But then again, it is fun seeing the face of some big block guys when I go around them. I thought I was going to get pounded by a very nice sounding big block on spray. Ended up passing him by the 1/8 mile marker. __________________ ------Motor---------------Bottle 60'---1.53---------------1.41 1/8---6.58 @ 105.92----5.87 @ 118.41 1/4---10.38 @ 126.97----9.24 @ 142.49 Last edited by Super73; 11-13-2008 at 12:15 AM.



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