Quadrajet tuning made easy

Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.

82sbshortbed

82sbshortbed

Fuckemall!!
Joined
Mar 1, 2018
Posts
14,813
Reaction score
49,063
Location
SE Texas
First Name
Doug
Truck Year
1982, 1984
Truck Model
1500 shortbed, 1500 longbed
Engine Size
454, 305
I know how people bitch that quadrajets are hard to tune. Well. I saw this video and it don't seem to hard to me. I'm gonna do this to mine and will let y'all know what I get when I do it.

I've never attempted it before because it seemed too hard. So we'll see what happens when I do. I know my choke needs adjusting for sure.

xc_hide_links_from_guests_guests_error_hide_media
 
DoubleDingo

DoubleDingo

Full Access Member
Joined
Jul 3, 2012
Posts
10,118
Reaction score
14,382
Location
Right where I am
First Name
Bagoomba
Truck Year
1981, 1965
Truck Model
81-C20 Silverado Camper Special-TH400-4.10s; 65-C20 with 4:57 gears and Borg Warner Overdrive
Engine Size
Carb'ed Vortec 350; 1972 L48 350
Good video. He did miss setting the fast idle, and how to adjust the air flap resistance for the secondaries. Too, stiff and they won't open properly, too soft and they open too quickly.
 
DoubleDingo

DoubleDingo

Full Access Member
Joined
Jul 3, 2012
Posts
10,118
Reaction score
14,382
Location
Right where I am
First Name
Bagoomba
Truck Year
1981, 1965
Truck Model
81-C20 Silverado Camper Special-TH400-4.10s; 65-C20 with 4:57 gears and Borg Warner Overdrive
Engine Size
Carb'ed Vortec 350; 1972 L48 350
Paladin said:
The proper and best method of tuning a quadrajet is to remove it from the intake and replace it with a HOLLEY!!!!!:party52::patriot:
Click to expand...

I disagree my friend. But I am old school and like the Q-Jet. You like the Holley. Some like the Edelbrock. Others swear by EFI, which is a great option, just very expensive. No matter what we all prefer, the main goal is an engine that runs its best, and gets decent mileage. Decent for these beasts is anything in 10-12 range, anything above that and you found the unicorn...lol... :happy160: I went with these guys, they have bigger beers than these guys do :favorites13: :gr_grin:
 
75Monza

75Monza

Full Access Member
Joined
May 5, 2017
Posts
1,362
Reaction score
2,840
Location
Colville, Washington
First Name
Jeremy
Truck Year
1980, 1982, 1985
Truck Model
K30, K20, K20
Engine Size
454, 383, 350
Paladin said:
The proper and best method of tuning a quadrajet is to remove it from the intake and replace it with a HOLLEY!!!!!:party52::patriot:
Click to expand...
I have a special place in my heart for Quadrapukes, lol. Most people only know the wore out crappy ones, but a new quad tuned right is bar-none best sound of secondary's opening. Still have a few of the harder to find 800 cfm carbs and a load of every size jet, hanger and needles I could scrounge.
 
Paladin

Paladin

"Teufelshunde"
Joined
Jan 1, 2018
Posts
1,726
Reaction score
6,059
Location
Wichita Falls, Texas
First Name
Mike
Truck Year
1985
Truck Model
C30 Silverado Crew Cab Dually
Engine Size
468
You guys should know by now that anytime there is a post about the wonderful..choke...spit....sputter...quadrajet that I am going to throw the bait out there to see how many of you still bite!!! :gathering: LOL! My past experiences with Furds is why I drive nothing but Chevy and my past experiences with quadrajets is why I run nothing but HOLLEY!! Now where did that big boobed serving wench go and I'll get us another round!!!!:party52::party52::party52::party52::party52:CHEERS!
 
Snoots

Snoots

Full Access Member
Joined
Jan 23, 2013
Posts
8,179
Reaction score
16,008
Location
Georgia
First Name
Roger
Truck Year
1973
Truck Model
Jimmy Sierra
Engine Size
350
Paladin said:
You guys should know by now that anytime there is a post about the wonderful..choke...spit....sputter...quadrajet that I am going to throw the bait out there to see how many of you still bite!!! :gathering: LOL! My past experiences with Furds is why I drive nothing but Chevy and my past experiences with quadrajets is why I run nothing but HOLLEY!! Now where did that big boobed serving wench go and I'll get us another round!!!!:party52::party52::party52::party52::party52:CHEERS!
Click to expand...

You must be registered for see images attach
 
GXPWeasel

GXPWeasel

Full Access Member
Joined
Nov 5, 2019
Posts
573
Reaction score
1,034
Location
Kansas
First Name
Greg
Truck Year
1982 | 2015
Truck Model
Sierra C15 | Silverado Z71
Engine Size
5.0 | 5.3
This is a timely thread.
I'll be attempting to rebuild my first Quadrajet here in a week or two, now that I'm going back together with my engine.

Watched all 3 videos, and it seems straight forward.
 
82sbshortbed

82sbshortbed

Fuckemall!!
Joined
Mar 1, 2018
Posts
14,813
Reaction score
49,063
Location
SE Texas
First Name
Doug
Truck Year
1982, 1984
Truck Model
1500 shortbed, 1500 longbed
Engine Size
454, 305
Hooked up the choke to key on power and turned it forward a little to get the slight open like he said. One pump on the throttle and it fired right up but, still had to fan the throttle a bit at start up.

I didn't put the vacuum gage on it because I need to get some adaptors for it. But here's a short video of it running after the adjustment.

xc_hide_links_from_guests_guests_error_hide_media

You must be registered for see images attach


Before

You must be registered for see images attach


After turning it forward
 
GXPWeasel

GXPWeasel

Full Access Member
Joined
Nov 5, 2019
Posts
573
Reaction score
1,034
Location
Kansas
First Name
Greg
Truck Year
1982 | 2015
Truck Model
Sierra C15 | Silverado Z71
Engine Size
5.0 | 5.3
Nice. Sounds like she is running good.

by the way, where are you guys getting the clear dizzy caps? I have seen like 3 of them on here now.
 
Swearbody

Swearbody

Full Access Member
Joined
Nov 4, 2018
Posts
701
Reaction score
716
Location
Birmingham AL
First Name
Jeff
Truck Year
84
Truck Model
C1500
Engine Size
355 sbc
How much is a quadrajet worth in 2021. I have three I think. I know I have two and, one is rebuilt already, and the other one just came off a running truck.
 
DoubleDingo

DoubleDingo

Full Access Member
Joined
Jul 3, 2012
Posts
10,118
Reaction score
14,382
Location
Right where I am
First Name
Bagoomba
Truck Year
1981, 1965
Truck Model
81-C20 Silverado Camper Special-TH400-4.10s; 65-C20 with 4:57 gears and Borg Warner Overdrive
Engine Size
Carb'ed Vortec 350; 1972 L48 350
Swearbody said:
How much is a quadrajet worth in 2021. I have three I think. I know I have two and, one is rebuilt already, and the other one just came off a running truck.
Click to expand...

Whatever someone is willing to pay. I say keep 'em, rebuild 'em, and have waiting. They don't spoil...lol...
 
Swearbody

Swearbody

Full Access Member
Joined
Nov 4, 2018
Posts
701
Reaction score
716
Location
Birmingham AL
First Name
Jeff
Truck Year
84
Truck Model
C1500
Engine Size
355 sbc
DoubleDingo said:
Whatever someone is willing to pay. I say keep 'em, rebuild 'em, and have waiting. They don't spoil...lol...
Click to expand...
Thats why ive had em so long now. Thinking ill "use them one day". Nope...ill never use one again by choice. Especially 2 or 3. Figure I may as well get some $$$ for other parts.
From a quick search its Looking like I can get about $50-70 a carb just as a parts carb and these work well so maybe $100+... And more if someone gets them locally.
 
GXPWeasel

GXPWeasel

Full Access Member
Joined
Nov 5, 2019
Posts
573
Reaction score
1,034
Location
Kansas
First Name
Greg
Truck Year
1982 | 2015
Truck Model
Sierra C15 | Silverado Z71
Engine Size
5.0 | 5.3
Swearbody said:
Thats why ive had em so long now. Thinking ill "use them one day". Nope...ill never use one again by choice. Especially 2 or 3. Figure I may as well get some $$$ for other parts.
From a quick search its Looking like I can get about $50-70 a carb just as a parts carb and these work well so maybe $100+... And more if someone gets them locally.
Click to expand...


I've never seen a Quadrajet for sale locally, but I've seen a few, rebuilt, cleaned, and ready to go for $200. Not sure if that's what they're selling for or not, but that's what they're asking.
 
You must log in or register to reply here.

Similar threads

MaverickH1
Quadrajet Choke and Fast Idle Linkages
Replies
7
Views
775
MaverickH1
MaverickH1
V
Need advice on Tuning a Quad
2 3
Replies
32
Views
2K
Ricko1966
R
Thesiger
Edelbrock Adapter questions
2 3
Replies
34
Views
1K
Ricko1966
R
A
1980 C10 with a SBC350 quadrajet
Replies
10
Views
801
Ricko1966
R
horchata81k10
how to hook up manual choke 1405
Replies
5
Views
474
WFO
WFO

Latest posts

Forum statistics

Threads
42,065
Posts
908,290
Members
33,542
Latest member
willyg
Top