The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1967 - 1972 Chevrolet & GMC Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 05-21-2015, 11:32 AM   #1
jackedup
Registered User
 
Join Date: Jan 2015
Location: OKLAHOMA CITY
Posts: 29
Is A frame notch always NECESSARY?

I'm wanting to lower my 71 c10 with 4 in. lowering leaf springs and drop spindles in the front. My question is for anyone who has used the 4 in lowering leafs and if they had to notch the frame to create more clearance or did the springs just go in with no other mods needed. I always prefer not making too many mods so if in the future I want to restore it back to the original stance, it still looks unmolested with regard to the frame.
jackedup is offline   Reply With Quote
Old 05-21-2015, 12:10 PM   #2
69moneypit
Divorced .....WITH KIDS
 
69moneypit's Avatar
 
Join Date: Dec 2003
Location: mississippi
Posts: 619
Re: Is A frame notch always NECESSARY?

I had my leafs dearched on a truck in the past around 4 inches . I didn't notch .
__________________
1969 GMC SWB
1975 Chevy Malibu 80k
1963 Ford Galaxie 63k (inherited)
2005 Nissan Armada (wife's idea)
69moneypit is offline   Reply With Quote
Old 05-21-2015, 02:24 PM   #3
sKnNyPpY
Registered User
 
sKnNyPpY's Avatar
 
Join Date: Sep 2012
Location: Columbia, SC
Posts: 549
Re: Is A frame notch always NECESSARY?

I have a flip with 6+" of drop and no notch. I only occasionally bottom out. You will be fine without. You might need to move your rear/upper shock mount to keep them more upright.
__________________
Life is too long to go slow...
71 GMC 1500 Super Custom LWB
350/350 AC(replaced w/vintage air)/PS/PB
2.5 CPP Spindle, 1" CPP Drop Spring, CPP Front and Rear Sway Bars/DJM Flip, new General Spring KC 5 spring pack, HEI /IntReg Alt
20x8.5 OldSkools 5" BS, 275/45 Falkens
sKnNyPpY is offline   Reply With Quote
Old 05-21-2015, 03:03 PM   #4
leftybass209
Registered User
 
leftybass209's Avatar
 
Join Date: Feb 2011
Location: Modesto, CA
Posts: 2,189
Re: Is A frame notch always NECESSARY?

Short answer: No.
Long answer: It's dependent on your particular case.

This is one area where the guy across the country really has no clue what you have, or what your requirements are. I've seen people measure out their drops and have anywhere from a 1/4" to 3/4" difference between distances from the bump stop to the axle tube. (I'm not saying that is the distance, just the difference in measurements) That tells me one very important thing; every truck is different!

Fortunately this is one of those instances where, if you like the 4" drop, do it. If then, it seems too close for comfort, you can add a notch later. I understand you don't want to make too many modifications, and chances are highly likely you won't need a notch on 4 inches unless your truck has led a really rough past life.
leftybass209 is offline   Reply With Quote
Old 05-21-2015, 03:50 PM   #5
67 cst swb
Senior Member
 
67 cst swb's Avatar
 
Join Date: Nov 2001
Location: Rapid City, SD
Posts: 2,281
Re: Is A frame notch always NECESSARY?

Quote:
Originally Posted by leftybass209 View Post
Short answer: No.
Long answer: It's dependent on your particular case.

This is one area where the guy across the country really has no clue what you have, or what your requirements are. I've seen people measure out their drops and have anywhere from a 1/4" to 3/4" difference between distances from the bump stop to the axle tube. (I'm not saying that is the distance, just the difference in measurements) That tells me one very important thing; every truck is different!

Fortunately this is one of those instances where, if you like the 4" drop, do it. If then, it seems too close for comfort, you can add a notch later. I understand you don't want to make too many modifications, and chances are highly likely you won't need a notch on 4 inches unless your truck has led a really rough past life.
Well said.
__________________
My Trucks:
1967 Chevrolet Short Wide Box 327 TH350 9" w/3.90 gears paint will be White - Current Project
1967 Chevrolet Custom LWB 283 TH400 3.73 Posi, no-AC, no-PS, no-PB, bench-seat, small-window - mostly orig driver
1967 Chevrolet CST LWB originally a 327 TH400 3.73 Posi AC PS PB, had Buddy Buckets, Small Window - parts truck
1967 Chevrolet CST LWB, 283 MT 3.73 had Buddy Buckets, Panoramic Window - parts truck
2001 Chevrolet 3500 2WD Crew Cab Dually 8.1L Allison White
67 cst swb is offline   Reply With Quote
Old 05-21-2015, 03:56 PM   #6
sKnNyPpY
Registered User
 
sKnNyPpY's Avatar
 
Join Date: Sep 2012
Location: Columbia, SC
Posts: 549
Re: Is A frame notch always NECESSARY?

I agree with the above and would only be concerned about the sag from the original front springs since the leafs will be brand new. Good time to inspect/install new ball joints as well.
__________________
Life is too long to go slow...
71 GMC 1500 Super Custom LWB
350/350 AC(replaced w/vintage air)/PS/PB
2.5 CPP Spindle, 1" CPP Drop Spring, CPP Front and Rear Sway Bars/DJM Flip, new General Spring KC 5 spring pack, HEI /IntReg Alt
20x8.5 OldSkools 5" BS, 275/45 Falkens
sKnNyPpY is offline   Reply With Quote
Old 05-21-2015, 05:00 PM   #7
First c10
Registered User
 
First c10's Avatar
 
Join Date: Dec 2012
Location: Los Banos CA
Posts: 2,705
Re: Is A frame notch always NECESSARY?

I installed a notch kit a few months after I lowered my sons truck(with ECE Rear spring and hanger). That was because my son wanted to load 3- 250R motorcycles in it and it kept bottoming out. So I notched it and relocated the shocks and bump stops. Still hits when loaded sometimes but at least its not hitting all the time.
good luck
__________________
1956 Chevy Bel Air 2 door
1956 Chevy 210 4 Door
1970 K20 LWB project the Hulk build w/Supercharged 4.8L-ly2/4L60E HULK BUILD
1970 C10 Yellow/White Deluxe LWB w/ 5.3L-LC9/6L80E
1968 K10 LWB Dark green my son calls it "THE HULK Jr"HULK JR *SOLD*
GO GO!!!
First c10 is offline   Reply With Quote
Reply

Bookmarks

Tags
frame, leaf springs, lowering, notch


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 04:42 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com