73-87chevytrucks.com

Welcome to 73-87chevytrucks.com

73-87chevytrucks.com is not only a forum we are also a vendor for a variety of parts both replacement and custom. Check out our store at 73-87chevytrucks.com Online Store

73-87chevytrucks Social Network

We are also on Facebook so give us a like to the page if you like what you see: http://www.facebook.com/7387chevytrucks

73-87chevytrucks Merchandise

SpreadShop Site

Cafepress Site

Rear axle is 7/16” off center

June 09, 2025, 05:49:42 am by Lowellguy1 | Views: 1064 | Comments: 1

Hello, I have a 87 R10 (rear axle flip) with a 12 bolt (5 lug) that I cannot verify it’s part number because it isn’t located where it should be. This leads me to believe it could have been a swap from another gm vehicle. All mounts are oe and the locations are centered (based on the C/L) of the pinion. When I compare the inside distance from the tire to the frame rail they differ by almost 7/16” It might seem minor but I have the widest wheel possible to tuck in there with the stock wheel well and it is almost hitting the bolts on the inside (drivers side). Yes the bed is squared and centered on the frame rails.

Any suggestions are always appreciated.
Thanks

Sent from my iPhone using Tapatalk

Read More | Write Comment

Header recommendations for 305

June 08, 2025, 02:40:16 pm by Rough75C20
Views: 1723 | Comments: 1

Hello,

Looking into headers for my 305. Any recommendations? Currently looking at headers from summit racing and jegs. I’ve read to stay with a little smaller diameter for clearance issues. Would like to buy a set that I don’t have to beat with a hammer too much to get to fit. Current setup is a 75 2wd c20 with a 305 out of an 86. Would like to stay under 500 dollars if possible. Would like to keep the temp sensor in the side of the block on the drivers side which I’ve read have had clearance issues in the past. Let me know your thoughts.

Thank you

Sent from my iPhone using Tapatalk

Read More | Write Comment

77 Suburban Color Mystery

June 03, 2025, 11:48:02 am by Ghazi67
Views: 5028 | Comments: 1

Hello
Hope everyone is OK

I am trying to help a friend w/his 1977 GMC Suburban project.
I need your help in identifying the original truck color/s from its build sheet.

Appreciate any details or helpful links
Cheers

Read More | Write Comment

OBS forum/wiring diagram?

June 02, 2025, 09:46:45 am by Scaryfastatx
Views: 7639 | Comments: 2

Hey all, I'm helping a buddy of mine fix his 1990 C1500

It was his truck in high school/college but had been sitting for like 20 years and he's wanting to get it going again.

The previous owner had done some sound system and alarm "upgrades" and he's having issues with it staying running. I don't know if it's the wiring or not but given how crappy of a job the guy did on the harnesses I'd like to investigate

Anybody know of a good site with wiring distance for the OBS? thanks!

Read More | Write Comment

Fuel Line Question

May 28, 2025, 01:35:52 pm by devildogmech | Views: 19872 | Comments: 5

ok.... Truck is a 79' C-10 BIG Ten. In the midst of an LS Swap.

Fuel System.

- NEW Tank for an 87 C-10 with TBI
- NEW Sending Unit for TBI
- NEW Pump for LS

I'm trying to fabricate my fuel lines and weirdly, the connectors for the fuel injection system will NOT connect to the sending unit. The 3/8 Feed is WAY too small, the 5/16 Return is too big. The sending unit has the fuel injection style connectors........ Is there another size I don't know about?

Thanks in Advance.

Will

Read More | Write Comment

Pages: [1]