Rear Suspension Opinions

[Magnimike1]

My '84 when purchased already had shackles and hangers for a 4" drop. I want it at least another 3" lower (it can be more)to tuck the 31" tires.

I already have purchased new Caltracs for non flip but I can change that easily they said.

I am considerling lowering leaf springs as to a flip kit since I already have 4".

I want the best set up for straight line traction. I would like your opinions....

It will have around 850hp on the street and more at the track.

I am not currently considering a 4 link or ladder bar at this time.

[1LowToy]

I'd consider the 4link and beafing the frame. Oh yeah a roll cage too

[Altec]

Originally Posted by 1LowToy

I'd consider the 4link and beafing the frame. Oh yeah a roll cage too

This. 800+ horses through a low rider leaf setup is going to do nothing but wrap your axle, and break drive shafts.


triangulated 4-link is my opinion.

[Non_Sequitor]

For that kind of power, you really do need to look into some frame reinforcements and a 4-link set-up. You will have a very hard time getting any of that power to the ground otherwise. Staying with leaves will probably give you a lot of axle wind-up, and lead to broken rear axles as well.

[jrcaprai]

Originally Posted by Non_Sequitor

For that kind of power, you really do need to look into some frame reinforcements and a 4-link set-up. You will have a very hard time getting any of that power to the ground otherwise. Staying with leaves will probably give you a lot of axle wind-up, and lead to broken rear axles as well.

Caltracs will take care of that... they are doing well behind 1500 HP Stock suspended X275 Cars

[3r!c84]

got any pics of this truck? and specs on the motor

[bigblockrock]

Originally Posted by jrcaprai

Caltracs will take care of that... they are doing well behind 1500 HP Stock suspended X275 Cars

x2 for caltracs. X275 cars are going bottom 8s on stock style suspension and a 275 drag radial. I'd do a flip kit and maybe some split mono leafs. Calvert can build those for your application. Add some double adjustable shocks and youll hook on dirt!

[Magnimike1]

Originally Posted by 3r!c84

got any pics of this truck? and specs on the motor

The motor is a Dart block 377, with Trickflow 215 heads, Victor Jr. intake and a Quick Fuel 750 blow through carb.

Twin 76mm Turbos running E85.

Complete Aeromotive Fuel System with -10 supply and -10 return

All I need to purchase now is a $3000 Turbo 400 and converter LOL

I'll work on getting pictures. Right now it just has the GM crate 290 horse engine and a turbo 350. This will do me until paint and suspension gets Ironed out.

My point of my post is that I KNOW that the Caltracs will hold up under some high horse power leaf spring cars. I was just curios which may be better for traction. Flipped or not. I asked Scott at Caltrac and he said either way, but you know how that goes...

[Non_Sequitor]

There is a bit of planning and testing that will need to go into either set-up. I wouldn't say that either is a "plug-n-play" type of thing, and will require proper chassis set-up. Those guys that are running 8's on DR's with CalTracs did NOT just slap them on and run. I can assure you of that.

[jrcaprai]

Originally Posted by Magnimike1

The motor is a Dart block 377, with Trickflow 215 heads, Victor Jr. intake and a Quick Fuel 750 blow through carb.

Twin 76mm Turbos running E85.

Complete Aeromotive Fuel System with -10 supply and -10 return

All I need to purchase now is a $3000 Turbo 400 and converter LOL

I'll work on getting pictures. Right now it just has the GM crate 290 horse engine and a turbo 350. This will do me until paint and suspension gets Ironed out.

My point of my post is that I KNOW that the Caltracs will hold up under some high horse power leaf spring cars. I was just curios which may be better for traction. Flipped or not. I asked Scott at Caltrac and he said either way, but you know how that goes...

I used to talk to a guy that had a 396 sbc that ran a 175 HP Hit... he had stock springs, Non-flipped Axle, Caltracs, and the Rancho 9000 shocks that Calverts sells... he was running bottom 10's and used a trans brake...
He ran really low 60'... but I cannot remember how low?
Anyway I asked him about his setup, and he said non-flipped worked best and having his pinion angle at -4.0°
I cannot remember his name... I'll see if i can find a video... that thing left hard

We definitely need pics of the twins

[Slonaker]

I'm running the Western Chassis drop leaves with a stock 350. They are only 2 or 3 leaves thick, if that matters.

Slonaker

[Magnimike1]

Thanks for the replies.
Posted via Mobile Device

[jrcaprai]

I found It

Thanks for the help 1984 GMC stock suspension, 396 small block with a Bowtie Overdrive 700r4 with a Moser Dana 60 rear-end
4.11 gear, and CalTracs bars for suspension help. 1.36 60ft with M/T Drag Radials, 10.3 @129 on pump gas and 150 shot.
( by the way 4500lbs street truck)

[Magnimike1]

Originally Posted by jrcaprai

I found It

Thanks for the help 1984 GMC stock suspension, 396 small block with a Bowtie Overdrive 700r4 with a Moser Dana 60 rear-end
4.11 gear, and CalTracs bars for suspension help. 1.36 60ft with M/T Drag Radials, 10.3 @129 on pump gas and 150 shot.
( by the way 4500lbs street truck)

Very nice
Posted via Mobile Device

[Pop's C-10]

I recall seeing that truck run...that thing hauls...

[Magnimike1]

Originally Posted by Non_Sequitor

There is a bit of planning and testing that will need to go into either set-up. I wouldn't say that either is a "plug-n-play" type of thing, and will require proper chassis set-up. Those guys that are running 8's on DR's with CalTracs did NOT just slap them on and run. I can assure you of that.

Anyone with common sense should know that, but I appreciate your input nonetheless.

[Non_Sequitor]

Originally Posted by Magnimike1

Anyone with common sense should know that, but I appreciate your input nonetheless.

I honestly didn't mean to state the obvious, but sometimes sense isn't quite so common. Cheers!

[jitteryguy]

with that much HP a 4 link will be you best bet, far more tuneable than any other option. other options can be made to work, but nothen beat's a "good" 4 link in a drag race application.

[Puglia10]

I'll be getting rid of my brand new KP 4-link, never opened, if interested.

[Magnimike1]

Originally Posted by jitteryguy

with that much HP a 4 link will be you best bet, far more tuneable than any other option. other options can be made to work, but nothen beat's a "good" 4 link in a drag race application.

I agree. It will have to come with CONTINUAL upgrades (lol). I am still trying to get out of hock after buying the fuel system, electronic boost controller and the Digital 7 plus igniton set-up. Whew!

[Magnimike1]

Originally Posted by Puglia10

I'll be getting rid of my brand new KP 4-link, never opened, if interested.

Link to set-up?

[Puglia10]

here it is
http://*******************/4-link-kit...ize-4-link-kit