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 1973 - 1987 Chevrolet & GMC Squarebody Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 07-13-2021, 05:29 PM   #1
K25alive
Senior Member
 
Join Date: Jun 2015
Location: Portland, OR
Posts: 219
454+headers+A/C brackets?

I'm going to put headers on my '77 454 that is currently at the engine builder shop. It will get a Edelbrock intake too. It just dawned on me, can I keep my existing OEM A/C compressor and brackets or is there an aftermarket set I need to get? The truck is a '77 C10 step w/factory 454. The A/C works great, I'd like to keep it. Anyone gone through this with a BBC?
K25alive is offline   Reply With Quote
Old 07-13-2021, 06:01 PM   #2
Southcity
Registered User
 
Southcity's Avatar
 
Join Date: Aug 2007
Location: South City, CA
Posts: 950
Re: 454+headers+A/C brackets?

Not sure if your OE AC brackets will work but if it's helpful, I am running a 454 (Gen VI 7.4L)

Headers = Sanderson ceramic 3/4 length BBC headers for 67-87 Truck, patented leak-free flange design. I'm very satisfied with these headers. (https://www.sandersonheaders.com/san...category_id=27)

AC brackets = Because I am running an aftermarket AC system from Old Air, I am using their AC/Alternator brackets. Depending if it's long or short water pump
(https://www.oldairproducts.com/categ...parts/brackets)
__________________
66 GMC Suburban Custom
Southcity is offline   Reply With Quote
Old 07-13-2021, 06:21 PM   #3
Ziegelsteinfaust
Registered User
 
Join Date: Dec 2012
Location: Temple City
Posts: 2,716
Re: 454+headers+A/C brackets?

I have used all thread couplers, or 1/2 gas pipe for nipples to space out the bracket for power steering. Then ran the factory bolt back through the spacer.
Ziegelsteinfaust is offline   Reply With Quote
Old 07-13-2021, 07:14 PM   #4
kwmech
Senior Member
 
Join Date: Mar 2003
Location: Colfax-California
Posts: 6,817
Re: 454+headers+A/C brackets?

My question would be---are headers really needed? I get a pretty good flow out of my cast irons into a single 3'' semi built 454 nothing radical, 30 over flat tops 9-1 compression 268 cam. engine screams
kwmech is online now   Reply With Quote
Old 07-13-2021, 10:46 PM   #5
Ziegelsteinfaust
Registered User
 
Join Date: Dec 2012
Location: Temple City
Posts: 2,716
Re: 454+headers+A/C brackets?

No, but I would look for the best flowing manifolds you can get.

Look up castheads on YouTube. He builds nascar Saturday night special engines. From what I see he specializes in small blocks, and mostly chevy. Either way you can pick up a few ideas to increase flow.

Below 3000rpm probably not much change, but after with that cam you will feel a difference.
Ziegelsteinfaust is offline   Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

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 02:39 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2021, vBulletin Solutions Inc.
Copyright 1997-2020 67-72chevytrucks.com