5/7 drop - The 1947 - Present Chevrolet & GMC Truck Message Board Network

BIG KRIS · 01-12-2011, 01:16 PM

Is there anyone running a static drop on the track,and if so how well does it work?
Posted via Mobile Device

**regan wilson** · 01-12-2011, 11:12 PM

Are you talkin bout a 4-7 swap ?

BIG KRIS · 01-13-2011, 12:22 AM

Like a djm or belltech drop kit.

**leddzepp** · 01-13-2011, 12:52 AM

I have a 5/6.5 drop....real close to what you are seeking. Look at the last page of my build thread for pics. I have a C-notch on order, as there is only about 1" of clearance between the rear axle and the frame.

kpeztruck · 01-13-2011, 10:30 AM

I tried the 3.5/5 drop, and never got the truck to hook at the track. Mind you, I was trying to run low to mid 5's in the 1/8 mile. The spring rate was to high to transfer weight from the front, and the rear spring rate did not allow proper anti-squat to work properly. I ended up using Moroso trick springs and QA1 stocket star R series front shocks, and Koni double adjustable coil-overs, and an anti-rollbar from Bickel in the rear. Good luck, let me know if I can help you in any way. I should have an front suspension at market in the next couple months that will help considerably with weight, geometry, etc. Thanks Paul

limitedstreetoutlaw · 01-13-2011, 11:56 AM

I'm running a 4 1/2 f and 6 1/2 r cpp springs right now and pulled consitant low 1.6 and a hand full of high 1.5 60' on drag radials. I'm gonna change that setup though as soon as i can was fighting traction problems all of the time out.

BIG KRIS · 01-13-2011, 02:57 PM

Thanks for the replies.I wanted to know more out of curiosity than tryn to do it. I got a chasis shop DSR RACECRAFT that my buddy owns that's gonna hook me up.
Posted via Mobile Device

Wild83C10 · 01-13-2011, 06:23 PM

Keep in mind everyone that replied is probably running trailing arm rear suspension and your running leaf springs. A big difference between the two.

BIG KRIS · 01-13-2011, 07:10 PM

Quote:

Originally Posted by Wild83C10

Keep in mind everyone that replied is probably running trailing arm rear suspension and your running leaf springs. A big difference between the two.

Gotcha. I really just asked out of curiosity. I'm most likely gonna stick with a four link and maybe still do a front crossmember.
Posted via Mobile Device

kpeztruck · 01-14-2011, 09:20 AM

Quote:

Originally Posted by Wild83C10

Keep in mind everyone that replied is probably running trailing arm rear suspension and your running leaf springs. A big difference between the two.

Sorry, I did not realize what year truck, and with what rear suspension we were talking about here. The 4-link will work well for you. I know a lot of S10 guys are running Cal-tracs with success for stock type suspension set-ups. I have never seen anyone run Cal-tracs on full size trucks. I seem to always assume we are talking about trailing arm rear suspension. LOL. Paul

72MARIO · 01-17-2011, 10:41 PM

I have Cal-Tracks the truck hooks up really well. I bought there axel flip setup. Had to put in a CPP heavy duty C notch. for travel

3r!c84 · 01-18-2011, 12:54 AM

5/5 drop no wheel hop problems with the flip kit

YouTube - 84 c10 pbir

BIG KRIS · 01-18-2011, 04:35 AM

Nice!

vincentgkirkland · 01-18-2011, 02:39 PM

4.5 / 7 cpp no big problems Name: Picture008.jpg
Views: 1277
Size: 24.8 KB

vince 72super10

team39763 · 01-19-2011, 12:46 PM

There's tons of guys down here in the RGV with dropped trucks that seem to hook just fine. These guys are low, like 5/7 and lower. Them RGV trucks are some of the quickest in the state. They have lots of videos on youtube and on the Edinburg track website.

KQQL IT · 01-19-2011, 10:30 PM

My 73 works decent foot braked 1.67 60's. It wanted a light duty 3 leaf pack. the 7 leaf heavy half set was junk.

3r!c84 · 01-19-2011, 10:59 PM

Quote:

Originally Posted by KQQL IT

My 73 works decent foot braked 1.67 60's. It wanted a light duty 3 leaf pack. the 7 leaf heavy half set was junk.

you feel it hook up more with 3 leafs? ive got the stock 4 (or 5 leaf) i wanted to take 1 out and see if the truck will squat alittle more at the line. and hook up a little better

KQQL IT · 01-19-2011, 11:34 PM

I went from the 7 leaf to the light duty 3 leaf pack and both shocks pointing forward at the same time... im not sure which made the biggest change but Cal tracs recomends the lightest leaf pack you need to hold up the vehicle.

3r!c84 · 01-19-2011, 11:35 PM

Quote:

Originally Posted by KQQL IT

I went from the 7 leaf to the light duty 3 leaf pack and both shocks pointing forward at the same time... im not sure which made the biggest change but Cal tracs recomends the lightest leaf pack you need to hold up the vehicle.

what caltracs are u using? and i cant find anytype of slaper bars or caltracs for a flipped rear end

team39763 · 01-19-2011, 11:52 PM

Calvert makes the caltracs in a flipped version. I'm told that they also sell their split monoleaf setup for these trucks too.

KQQL IT · 01-20-2011, 12:10 AM

Its one of these two. I cant recall the part # of mine?

http://calvertracing.com/cart/ymm.ph...2FC1500+PICKUP

3r!c84 · 01-20-2011, 12:13 AM

Quote:

Originally Posted by KQQL IT

Its one of these two. I cant recall the part # of mine?

http://calvertracing.com/cart/ymm.ph...2FC1500+PICKUP

the 3204 one. but its outa my price range

Super73 · 01-21-2011, 03:14 AM

Quote:

Originally Posted by 3r!c84

you feel it hook up more with 3 leafs? ive got the stock 4 (or 5 leaf) i wanted to take 1 out and see if the truck will squat alittle more at the line. and hook up a little better

Why do people still think squating is better for hooking??

Quote:

Originally Posted by KQQL IT

I went from the 7 leaf to the light duty 3 leaf pack and both shocks pointing forward at the same time... im not sure which made the biggest change but Cal tracs recomends the lightest leaf pack you need to hold up the vehicle.

Right and why is that? Depending on where you instant center is set, you could be inducing a lot of antisquat. With the stored energy of the light leafs, antisquat puts the tire in to the ground, adding force on that tire.

What hole are you running the caltracs in?

KQQL IT · 01-22-2011, 02:00 AM

Quote:

Originally Posted by Super73

Why do people still think squating is better for hooking??

Right and why is that? Depending on where you instant center is set, you could be inducing a lot of antisquat. With the stored energy of the light leafs, antisquat puts the tire in to the ground, adding force on that tire.

What hole are you running the caltracs in?

Bottom hole, with a half turn Pre load. I need to scale it and see how outta square it is

01-12-2011, 01:16 PM	#1
BIG KRIS Registered User Join Date: May 2009 Location: romeoville,il Posts: 509	5/7 drop Is there anyone running a static drop on the track,and if so how well does it work? Posted via Mobile Device __________________ Flowershop Hip Hop & Street Rods Dropmember 83 Custom Deluxe Almond on Almond 85 Silverado White on Red/Now Chevy LeMans Blue Rendering in Truckin magazine vol 36 no. 11,2010

01-12-2011, 11:12 PM	#2
regan wilson Senior Member Join Date: Mar 2008 Location: tyler texas Posts: 1,536	Re: 5/7 drop Are you talkin bout a 4-7 swap ? __________________ NHRA Super Street 469C It only runs 10.90 at 156 mph

01-13-2011, 12:22 AM	#3
BIG KRIS Registered User Join Date: May 2009 Location: romeoville,il Posts: 509	Re: 5/7 drop Like a djm or belltech drop kit. __________________ Flowershop Hip Hop & Street Rods Dropmember 83 Custom Deluxe Almond on Almond 85 Silverado White on Red/Now Chevy LeMans Blue Rendering in Truckin magazine vol 36 no. 11,2010

01-13-2011, 12:52 AM	#4
leddzepp Moderator Join Date: May 2007 Location: Southern Cal Posts: 19,990	Re: 5/7 drop I have a 5/6.5 drop....real close to what you are seeking. Look at the last page of my build thread for pics. I have a C-notch on order, as there is only about 1" of clearance between the rear axle and the frame. __________________ 1972 C/10 Cheyenne Super SWB. Restored, loaded, slammed. 1968 C/10 50th Anniversary LWB. Unrestored, stock, daily driver/work truck. RIP ElJay RIP 67ChevyRedneck RIP Grumpy Old Man

01-13-2011, 10:30 AM	#5
kpeztruck Registered User Join Date: Sep 2010 Location: Canton, GA Posts: 229	Re: 5/7 drop I tried the 3.5/5 drop, and never got the truck to hook at the track. Mind you, I was trying to run low to mid 5's in the 1/8 mile. The spring rate was to high to transfer weight from the front, and the rear spring rate did not allow proper anti-squat to work properly. I ended up using Moroso trick springs and QA1 stocket star R series front shocks, and Koni double adjustable coil-overs, and an anti-rollbar from Bickel in the rear. Good luck, let me know if I can help you in any way. I should have an front suspension at market in the next couple months that will help considerably with weight, geometry, etc. Thanks Paul

01-13-2011, 11:56 AM	#6
limitedstreetoutlaw Registered User Join Date: Jun 2009 Location: Arkoma OK Posts: 134	Re: 5/7 drop I'm running a 4 1/2 f and 6 1/2 r cpp springs right now and pulled consitant low 1.6 and a hand full of high 1.5 60' on drag radials. I'm gonna change that setup though as soon as i can was fighting traction problems all of the time out. __________________ Brandon Street Car Mafia Last edited by limitedstreetoutlaw; 01-13-2011 at 11:57 AM.

01-13-2011, 02:57 PM	#7
BIG KRIS Registered User Join Date: May 2009 Location: romeoville,il Posts: 509	Re: 5/7 drop Thanks for the replies.I wanted to know more out of curiosity than tryn to do it. I got a chasis shop DSR RACECRAFT that my buddy owns that's gonna hook me up. Posted via Mobile Device __________________ Flowershop Hip Hop & Street Rods Dropmember 83 Custom Deluxe Almond on Almond 85 Silverado White on Red/Now Chevy LeMans Blue Rendering in Truckin magazine vol 36 no. 11,2010

01-13-2011, 06:23 PM	#8
Wild83C10 Registered User Join Date: May 2002 Location: NJ Posts: 910	Re: 5/7 drop Keep in mind everyone that replied is probably running trailing arm rear suspension and your running leaf springs. A big difference between the two. __________________ 83 C10 Stepside (SOLD, it was a blast!) 383 MASS-FLO EFI/TKO II 600/3.90 Posi 10 bolt S475 and C4 DM running, fine tuning turbo= Douchebag Racing: Runs Fine all the Time

01-17-2011, 10:41 PM	#11
72MARIO Registered User Join Date: Nov 2000 Location: Huntsville Ontario Canada Posts: 4,052	Re: 5/7 drop I have Cal-Tracks the truck hooks up really well. I bought there axel flip setup. Had to put in a CPP heavy duty C notch. for travel __________________ 1968 Suburban numbers matching all original truck now equipped with 6.0/4L80 on Accuair http://67-72chevytrucks.com/vboard/s...d.php?t=625017 1967 C/20 6.0/4L80 Roofing Truck 1990 V2500 Suburban "Plow Truck" 2005 TAHOE DD

01-18-2011, 04:35 AM	#13
BIG KRIS Registered User Join Date: May 2009 Location: romeoville,il Posts: 509	Re: 5/7 drop Nice! __________________ Flowershop Hip Hop & Street Rods Dropmember 83 Custom Deluxe Almond on Almond 85 Silverado White on Red/Now Chevy LeMans Blue Rendering in Truckin magazine vol 36 no. 11,2010

01-18-2011, 02:39 PM	#14
vincentgkirkland Registered User Join Date: Mar 2010 Location: lucedale Posts: 49	Re: 5/7 drop 4.5 / 7 cpp no big problems vince 72super10 __________________ 72 SUPER10

01-19-2011, 12:46 PM	#15
team39763 Registered User Join Date: Feb 2007 Location: Texas Posts: 469	Re: 5/7 drop There's tons of guys down here in the RGV with dropped trucks that seem to hook just fine. These guys are low, like 5/7 and lower. Them RGV trucks are some of the quickest in the state. They have lots of videos on youtube and on the Edinburg track website. __________________ 1982 Silverado - SBE, cleaned up GM heads, small cam, TH350, 850 Demon, 4.56 gears, and caltracs. Best time so far 11.8@XXXMPH Last edited by team39763; 01-19-2011 at 12:47 PM.

01-19-2011, 10:30 PM	#16
KQQL IT At the body shop. Join Date: Aug 2009 Location: Land of fruits and nuts. Posts: 5,156	Re: 5/7 drop My 73 works decent foot braked 1.67 60's. It wanted a light duty 3 leaf pack. the 7 leaf heavy half set was junk. Last edited by KQQL IT; 01-20-2011 at 12:15 AM.

01-19-2011, 11:34 PM	#18
KQQL IT At the body shop. Join Date: Aug 2009 Location: Land of fruits and nuts. Posts: 5,156	Re: 5/7 drop I went from the 7 leaf to the light duty 3 leaf pack and both shocks pointing forward at the same time... im not sure which made the biggest change but Cal tracs recomends the lightest leaf pack you need to hold up the vehicle.

01-19-2011, 11:52 PM	#20
team39763 Registered User Join Date: Feb 2007 Location: Texas Posts: 469	Re: 5/7 drop Calvert makes the caltracs in a flipped version. I'm told that they also sell their split monoleaf setup for these trucks too. __________________ 1982 Silverado - SBE, cleaned up GM heads, small cam, TH350, 850 Demon, 4.56 gears, and caltracs. Best time so far 11.8@XXXMPH



Register or Log In To remove these advertisements.

01-20-2011, 12:10 AM	#21
KQQL IT At the body shop. Join Date: Aug 2009 Location: Land of fruits and nuts. Posts: 5,156	Re: 5/7 drop Its one of these two. I cant recall the part # of mine? http://calvertracing.com/cart/ymm.ph...2FC1500+PICKUP

Register or Log In To remove these advertisements.