Big Block Lowering Question - The 1947 - Present Chevrolet & GMC Truck Message Board Network

74 stepside · 06-24-2013, 08:29 PM

Im installing a BBC into my 73 1/2 ton. I will have 2.5 drop spindles. Im going to use 3/4 ton BBC coils. How much should I cut to achieve a total of 4" drop on the 1/2 ton?

Liddy71 · 06-24-2013, 08:41 PM

I have one that is bb 2.5 drop spindles I cut one round off for a another 2in drop it was a 3/4 change to 5 lug

manimal · 06-25-2013, 12:26 PM

You pullin apart the 'burb already?

74 stepside · 06-25-2013, 12:29 PM

Quote:

Originally Posted by manimal

You pullin apart the 'burb already?

No, just planning ahead. Having fun driving it.

bohmankid · 06-25-2013, 01:59 PM

I have a 78' big ten. five lug. came stock with the 454.
I've installed a 3" spindle and cut 2 full coils from the spring. It has about a 6 inch drop.
So If you wanted a 4" drop on yours, you should probably only cut off 1 coil which is about 1.5-2 inches. Measure twice, cut once (or multiple times if you want to go lower

)

Name: IMG_0111.jpg
Views: 107
Size: 51.6 KB

Name: IMG_0192.jpg
Views: 109
Size: 45.4 KB

74 stepside · 06-25-2013, 07:37 PM

Looks good. But a 3/4 ton bbc spring is still different than a 1/2 ton bbc spring. Im figuring I might need to cut 2 coils.

Liddy71 · 06-25-2013, 11:05 PM

two coils will be to much the ride will be bad every full coil cut off is 2" of drop

06-24-2013, 08:29 PM	#1
74 stepside Registered User Join Date: Oct 2009 Location: SoCal Posts: 815	Big Block Lowering Question Im installing a BBC into my 73 1/2 ton. I will have 2.5 drop spindles. Im going to use 3/4 ton BBC coils. How much should I cut to achieve a total of 4" drop on the 1/2 ton?

06-24-2013, 08:41 PM	#2
Liddy71 Registered User Join Date: May 2010 Location: Kenova, WV Posts: 821	Re: Big Block Lowering Question I have one that is bb 2.5 drop spindles I cut one round off for a another 2in drop it was a 3/4 change to 5 lug Attached Images

06-25-2013, 12:26 PM	#3
manimal Registered User Join Date: Oct 2006 Location: Southern Kalifornia Posts: 3,066	Re: Big Block Lowering Question You pullin apart the 'burb already? __________________ ------------------------------------------------------ -Lance 2000 Chevy C2500, 5.7, 4L80e 1999 Suburban K2500, 7.4, 4L80e 1980 Camaro..son's car...PROJECT

06-25-2013, 01:59 PM	#5
bohmankid Registered User Join Date: Nov 2012 Location: Salt Lake City, UT Posts: 520	Re: Big Block Lowering Question I have a 78' big ten. five lug. came stock with the 454. I've installed a 3" spindle and cut 2 full coils from the spring. It has about a 6 inch drop. So If you wanted a 4" drop on yours, you should probably only cut off 1 coil which is about 1.5-2 inches. Measure twice, cut once (or multiple times if you want to go lower ) __________________ My 1985 GMC 4x4 LS swap build thread R.I.P. My 1978 Big Ten, Big Block build thread Moby: My Chevy 4x4 ls swap build thread

06-25-2013, 07:37 PM	#6
74 stepside Registered User Join Date: Oct 2009 Location: SoCal Posts: 815	Re: Big Block Lowering Question Looks good. But a 3/4 ton bbc spring is still different than a 1/2 ton bbc spring. Im figuring I might need to cut 2 coils.

06-25-2013, 11:05 PM	#7
Liddy71 Registered User Join Date: May 2010 Location: Kenova, WV Posts: 821	Re: Big Block Lowering Question two coils will be to much the ride will be bad every full coil cut off is 2" of drop



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.