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#1 |
Next project: 1970 K10
Join Date: Feb 2004
Location: Fort Collins, Colo 80524
Posts: 6,685
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How many cross sills for a fleetside wood floor?
There is the obvious one in the far rear of the bed, but how many other cross sills are required for a short fleet wood floor? And since there are two different heigths, how many of each of those? Anyone have a pic of their floor showing all of the cross sills?
TIA! Bob
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Bob 1970 Chevy K10 LWB "Goldie" 350/TH350 next project!! 1981 Chevy C10 LWB 355/TH350 - My son's truck LS SWAP FORUM! Tons of LS swap info here! PLEASE CLICK HERE TO SUPPORT THE GREATEST BOARD ON THE NET! CLICK HERE FOR THE FAQ INDEX by KRUE |
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#2 |
Registered User
Join Date: Apr 2006
Location: edmonton ab ca
Posts: 88
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Re: How many cross sills for a fleetside wood floor?
I am pretty sure its 3 of the long ones (2 fount and 1 rear + rear sill) and 1 short one, pleas correct me if i am wrong.
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#3 |
CAN'T FIX NOTHIN
Join Date: Sep 2006
Location: SOUTHRUST VIRGINIA !!!
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starting at the rear you have the main cross brace , then you have a large cross sill then the shorter cross sill the two more large ones , a total of 4 sill's 3 large 1 small and the main rear crossmember , from memory but I think thats correct
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1967 C10 Shortbed Fleetside Small back glass 6 cyl 3spd on the tree 3.08 gears underdash AC |
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#4 |
Next project: 1970 K10
Join Date: Feb 2004
Location: Fort Collins, Colo 80524
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Re: How many cross sills for a fleetside wood floor?
Cool, thanks guys!
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Bob 1970 Chevy K10 LWB "Goldie" 350/TH350 next project!! 1981 Chevy C10 LWB 355/TH350 - My son's truck LS SWAP FORUM! Tons of LS swap info here! PLEASE CLICK HERE TO SUPPORT THE GREATEST BOARD ON THE NET! CLICK HERE FOR THE FAQ INDEX by KRUE |
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#5 |
Registered User
Join Date: Aug 2004
Location: sedalia mo
Posts: 77
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Re: How many cross sills for a fleetside wood floor?
You need four. The big one in the rear and the three that support the wood. There is a opional reinforcing strip that is recomended if your going to haul heavy items.
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#6 |
Registered User
![]() Join Date: May 2006
Location: Wyman, Kentucky
Posts: 403
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Re: How many cross sills for a fleetside wood floor?
If your going from steel to wood isn't the front header also required? Aren't the sills also turned upside down?
If youv'e already got a wood bed you already know this so don't pay any attention to me.LOL
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1972 GMC Jimmy, 4WD, 454 CI, 350 Turbo, 4" lift, 35" tires The math teacher said my son "Bubba" could be a mathmatical genius. cause he's got 13 fingers! |
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#7 | |
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Location: Mt Airy, MD
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Re: How many cross sills for a fleetside wood floor?
Quote:
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"BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~ |
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#8 |
Registered User
![]() Join Date: May 2006
Location: Wyman, Kentucky
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Re: How many cross sills for a fleetside wood floor?
Thank you, I hate makin' an arse of myself.
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1972 GMC Jimmy, 4WD, 454 CI, 350 Turbo, 4" lift, 35" tires The math teacher said my son "Bubba" could be a mathmatical genius. cause he's got 13 fingers! |
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#9 |
Registered User
Join Date: Jul 2006
Location: Central PA
Posts: 12,201
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Re: How many cross sills for a fleetside wood floor?
I have already cut my rear sill out in this pic (large one) My reinforcement strip in front of wheel wells is rotted and the PO added that large steel plate over the axle for extra reinforcement...
1,2,3 same cross sill bolt to frame RS - reinforcement strip -long and doesn't bolt to frame rear main cross sill - holds back of bed and wiring harnass I called MAR-K because their examples are a little confusing. I think that you could add the short reinforcement strip just behind the wheel wells? Since mine has a 1/4" piece of steel added then I only purchased the long stip from them. The front panel is different than a steel floor as well. Hope this works... Mike
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The Garage: 1968 K-10 SWB - "Project Money Pit" 1996 Z-71 - "huntin rig" 1969 C-10 LWB (SOLD) "Project flip that truck or else" 1993 Passport, F@rd 1-ton (SOLD)"Project Cousin Eddie" My Garage Build "The 1,000 footer" Last edited by msgross; 04-21-2007 at 10:08 PM. Reason: TYPO |
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#10 |
Next project: 1970 K10
Join Date: Feb 2004
Location: Fort Collins, Colo 80524
Posts: 6,685
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Re: How many cross sills for a fleetside wood floor?
RustyParts, I'll just ignore ya then!
![]() Thanks for that picture Mike! It's an all new bed, meant for a wood floor. I've never seen a good pic or had a good description of where they go. Since I doubt I will ever haul anything heavier than a cooler, so I don't guess I will need all the extra strips. I will need to notch the rear sill (not the main one) to clear the Blazer tank. Thanks agagin guys!
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Bob 1970 Chevy K10 LWB "Goldie" 350/TH350 next project!! 1981 Chevy C10 LWB 355/TH350 - My son's truck LS SWAP FORUM! Tons of LS swap info here! PLEASE CLICK HERE TO SUPPORT THE GREATEST BOARD ON THE NET! CLICK HERE FOR THE FAQ INDEX by KRUE |
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#11 |
Senior Member
Join Date: Jan 2005
Location: Loveland Co.
Posts: 3,098
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Re: How many cross sills for a fleetside wood floor?
BTW Bob, along as we're talking beds, the bed on the wife's truck is 3/4'' from the cab now that it's secured. I forgot you asked awhile back.
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Chris 74 Custom Deluxe SWB 350/350/3.73’s 99 2wd Silverado RCSB 5.3/4L60/3.90’s http://www.classictrucks.com/feature...short_bed.html |
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#12 |
Registered User
Join Date: Jul 2006
Location: Central PA
Posts: 12,201
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Re: How many cross sills for a fleetside wood floor?
I have to notch #3 as well due to a Blazer tank install. Hope that it helped, I can search for more if need be. I would guess that mine was all original since nothing was salvageable!
Luckily I found a complete set of all 4 sills and strips at Carlisle last year for $120.
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The Garage: 1968 K-10 SWB - "Project Money Pit" 1996 Z-71 - "huntin rig" 1969 C-10 LWB (SOLD) "Project flip that truck or else" 1993 Passport, F@rd 1-ton (SOLD)"Project Cousin Eddie" My Garage Build "The 1,000 footer" |
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#13 |
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Re: How many cross sills for a fleetside wood floor?
This is good info.The almighty LMC reference bible just lists A/R(as required).Real helpful.I guess your s`posed to ask their operators...yeah right.They must want you to over order to move move volumn or under order so they can make more off shipping
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"BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~ |
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#14 |
Next project: 1970 K10
Join Date: Feb 2004
Location: Fort Collins, Colo 80524
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Re: How many cross sills for a fleetside wood floor?
Thanks Chris!
OK, sounds like I am good to go then. I think I will look into using one of the thinner ones over the gas tank, then make some mounts to fill the gap between the thinner sill and the frame. I have the thinner one over the gas tank right now, tied together between the back side of the wheel tubs, and it clears the tank.
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Bob 1970 Chevy K10 LWB "Goldie" 350/TH350 next project!! 1981 Chevy C10 LWB 355/TH350 - My son's truck LS SWAP FORUM! Tons of LS swap info here! PLEASE CLICK HERE TO SUPPORT THE GREATEST BOARD ON THE NET! CLICK HERE FOR THE FAQ INDEX by KRUE |
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#15 |
Registered User
Join Date: Jul 2006
Location: Central PA
Posts: 12,201
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Re: How many cross sills for a fleetside wood floor?
good idea on the thinner one, I might look into that...
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The Garage: 1968 K-10 SWB - "Project Money Pit" 1996 Z-71 - "huntin rig" 1969 C-10 LWB (SOLD) "Project flip that truck or else" 1993 Passport, F@rd 1-ton (SOLD)"Project Cousin Eddie" My Garage Build "The 1,000 footer" |
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#16 |
Senior Member
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Location: Rockville,In. USA
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Re: How many cross sills for a fleetside wood floor?
Short wheelbase trucks need the following to replace all original stock pieces
3- Cross Sills 1- 49.5" reinforcement Strip 1"high 1- 72" reinforcement Strip 1"high 1- Rear Cross Sill Long wheelbase trucks need the following to replace all original stock pieces 5- Cross Sills 1- 49.5" reinforcement Strip 1"high 1- 72" reinforcement Strip 1"high 1- Rear Cross Sill GMCPaul |
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#17 |
Next project: 1970 K10
Join Date: Feb 2004
Location: Fort Collins, Colo 80524
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Re: How many cross sills for a fleetside wood floor?
Thanks, GMCPaul. Do you know the location of the two reinforcing strips?
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Bob 1970 Chevy K10 LWB "Goldie" 350/TH350 next project!! 1981 Chevy C10 LWB 355/TH350 - My son's truck LS SWAP FORUM! Tons of LS swap info here! PLEASE CLICK HERE TO SUPPORT THE GREATEST BOARD ON THE NET! CLICK HERE FOR THE FAQ INDEX by KRUE |
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#18 |
Senior Member
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Location: Rockville,In. USA
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Re: How many cross sills for a fleetside wood floor?
72" at leading edge of wheel tubs and the 49.5"is about 1/2way maybe 2/3rds the way from back of rear wheel tubs.
GMCPauls |
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#19 |
Next project: 1970 K10
Join Date: Feb 2004
Location: Fort Collins, Colo 80524
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Re: How many cross sills for a fleetside wood floor?
Thank you very much!
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Bob 1970 Chevy K10 LWB "Goldie" 350/TH350 next project!! 1981 Chevy C10 LWB 355/TH350 - My son's truck LS SWAP FORUM! Tons of LS swap info here! PLEASE CLICK HERE TO SUPPORT THE GREATEST BOARD ON THE NET! CLICK HERE FOR THE FAQ INDEX by KRUE |
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#20 |
Registered User
Join Date: Jul 2006
Location: Central PA
Posts: 12,201
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Re: How many cross sills for a fleetside wood floor?
looks like mine was missing the short strip but it had the steel plate installed by the PO to help...
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The Garage: 1968 K-10 SWB - "Project Money Pit" 1996 Z-71 - "huntin rig" 1969 C-10 LWB (SOLD) "Project flip that truck or else" 1993 Passport, F@rd 1-ton (SOLD)"Project Cousin Eddie" My Garage Build "The 1,000 footer" |
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