6066 (1960-1966) GMC Truck Club Bitcoin now accepted here! 
Pay Dues
Pay Dues or become a Site Supporter
 



Go Back   6066 (1960-1966) GMC Truck Club > 6066 GMC Truck Club Forum > GMC V6 and V12 Engines


GMC V6 and V12 Engines Engine repair and rebuilding

Reply
 
Thread Tools
  #1  
Old March 1st, 2021, 05:14 PM
5Tractorguy 5Tractorguy is offline
Member
 
Join Date: Jan 2017
Location: Boylston, MA
Truck: 1964 3/4ton Factory 4WD
Posts: 36
Rep Power: 57
5Tractorguy is on a distinguished road
Default Upgrading the 351 to a Holley 500

The HEI conversion was done last year, so I figured it's time for the Holley conversion this year.

I scanned though the forum and Jolly's conversion how-to last night. The only question I have (or just want to double check on before ordering) is about the carburetor.

Would this be the correct Holley 500?
https://www.summitracing.com/parts/hly-0-4412s

And if so, will it be sufficient to feed the 351 in a 2.5ton truck?
Reply With Quote
  #2  
Old March 2nd, 2021, 03:07 AM
Funky61's Avatar
Funky61 Funky61 is offline
-= Dues Paid =-
 
Join Date: Jan 2013
Location: Corona, CA
Truck: 1961 Suburban 1962 GMC Utility
Posts: 1,129
Rep Power: 409
Funky61 is just really niceFunky61 is just really niceFunky61 is just really niceFunky61 is just really niceFunky61 is just really niceFunky61 is just really nice
Default Re: Upgrading the 351 to a Holley 500

Hello 5Tractorguy;
are you one in the same guy from YouTube?

Great videos and content as well as being funny too.

Anyway the 500 Holley I bought was a used one from eBay and it was a 500cfm version and not the 350cfm model. It needed a rebuilding and I re-jetted also, but I have a 305. I'm sure you'll be happy with it on that 351.
__________________
1961 GMC Suburban 305A Overdrive
1962 GMC Utility 305D
Reply With Quote
  #3  
Old March 2nd, 2021, 04:02 PM
5Tractorguy 5Tractorguy is offline
Member
 
Join Date: Jan 2017
Location: Boylston, MA
Truck: 1964 3/4ton Factory 4WD
Posts: 36
Rep Power: 57
5Tractorguy is on a distinguished road
Default Re: Upgrading the 351 to a Holley 500

Quote:
Originally Posted by Funky61 View Post
Hello 5Tractorguy;
are you one in the same guy from YouTube?

Great videos and content as well as being funny too.

Anyway the 500 Holley I bought was a used one from eBay and it was a 500cfm version and not the 350cfm model. It needed a rebuilding and I re-jetted also, but I have a 305. I'm sure you'll be happy with it on that 351.

One in the same, that be me... Thanks!

I've seen other conversions with larger cfm Edelbrocks, but figured the Holley will be the easiest swap. How easy are they to change the jets on? Fairly simple to access? Really hoping it'll wake that 351 up. Stromberg WW just ain't cutting it anymore.
Reply With Quote
  #4  
Old March 2nd, 2021, 11:44 PM
Funky61's Avatar
Funky61 Funky61 is offline
-= Dues Paid =-
 
Join Date: Jan 2013
Location: Corona, CA
Truck: 1961 Suburban 1962 GMC Utility
Posts: 1,129
Rep Power: 409
Funky61 is just really niceFunky61 is just really niceFunky61 is just really niceFunky61 is just really niceFunky61 is just really niceFunky61 is just really nice
Default Re: Upgrading the 351 to a Holley 500

It's been a while but yes it was fairly straightforward. They are located in that front fuel bowl and here is a link that has some tips on Holley's


https://www.racingjunk.com/news/trou...r-holley-carb/



__________________
1961 GMC Suburban 305A Overdrive
1962 GMC Utility 305D

Last edited by Funky61; March 3rd, 2021 at 01:00 AM.
Reply With Quote
  #5  
Old May 14th, 2021, 01:54 PM
karlanderiksdad karlanderiksdad is offline
Junior Member
 
Join Date: May 2021
Location: snohomish washington
Truck: 1961 5000
Age: 49
Posts: 1
Rep Power: 0
karlanderiksdad is on a distinguished road
Default Re: Upgrading the 351 to a Holley 500

What are you using for the adapter plate?
Reply With Quote
Reply

Bookmarks

Thread Tools

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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Re: [6066 GMC] Re: holley 500 vs holley 350 Archiver Previous Forum Posts 0 April 13th, 2010 01:25 AM
Re: [6066 GMC] Upgrading to a 2 barrel holley Archiver Previous Forum Posts 0 June 21st, 2007 06:39 AM
Upgrading to a 2 barrel holley Archiver Previous Forum Posts 0 June 21st, 2007 02:25 AM
Re: [6066 GMC] Upgrading to a 2 barrel holley Archiver Previous Forum Posts 0 June 21st, 2007 01:04 AM
holley 500 on67 351 E Archiver Previous Forum Posts 0 October 26th, 2003 04:28 AM


All times are GMT +1. The time now is 04:49 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2013, Jelsoft Enterprises Ltd 681711554703|1710431362|0