305 With Quadra Jet Needs someting more
02-03-2012, 08:19 AM
#1
Junior Member
Thread Starter
Join Date: Oct 2011
Location: Delaware Ohio
Posts: 21
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1984 Z28
Engine: 305
Transmission: 5 speed
Axle/Gears: Stock
305 With Quadra Jet Needs someting more
Ok I have the 305 with the Quadra jet.. I dont like it. I had a bad experience with quadra jets in the past and I want to get away from this one. What would you guys suggest. I want a better response.
I also have the 5 speed withthe 373 rear end. i want to put a posi in there.. again what suggestions do you have.
Thanks
I also have the 5 speed withthe 373 rear end. i want to put a posi in there.. again what suggestions do you have.
Thanks
02-03-2012, 08:32 AM
#3
Junior Member
Thread Starter
Join Date: Oct 2011
Location: Delaware Ohio
Posts: 21
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1984 Z28
Engine: 305
Transmission: 5 speed
Axle/Gears: Stock
Re: 305 With Quadra Jet Needs someting more
Well Holley was a given. I just did not know if I should change over the intake as well and what model "Size" Holley to drop on.
02-03-2012, 08:37 AM
#4
Moderator
Join Date: Jan 2000
Location: Mercedes Norte, Heredia, Costa Rica
Posts: 20,981
Likes: 0
Received 9 Likes
on
8 Posts
Car: 1984 Z28 Hardtop
Engine: 383 Carb
Transmission: 4L60
Axle/Gears: 3.54 Dana 44
Re: 305 With Quadra Jet Needs someting more
You can't put a squarebore Holley on a stock spreadbore manifold.
You also need to change the distributor at the same time.
You also need to change the distributor at the same time.
02-04-2012, 09:03 AM
#5
Member
Join Date: Mar 2007
Location: Aurora, Illinois
Posts: 133
Likes: 0
Received 0 Likes
on
0 Posts
Car: 85 Camaro S/C
Engine: 350 Vortec 330 HP 650 Demon Carb
Transmission: 700R4
Axle/Gears: 3.42 Richmond Powertrax
Re: 305 With Quadra Jet Needs someting more
Holley makes a 650 cfm that is a replacement for the quadrajet. Model #4175 has vac sec., with electric choke and is the stock replacement. Model #4165 has mechanical sec., and manual choke. Sold by Summit and others.
02-04-2012, 09:06 AM
#6
02-04-2012, 09:18 AM
#7
Moderator
Join Date: Jan 2000
Location: Mercedes Norte, Heredia, Costa Rica
Posts: 20,981
Likes: 0
Received 9 Likes
on
8 Posts
Car: 1984 Z28 Hardtop
Engine: 383 Carb
Transmission: 4L60
Axle/Gears: 3.54 Dana 44
Re: 305 With Quadra Jet Needs someting more
Those are smog replacement carbs for 70s pickups and vans.
Trending Topics
02-04-2012, 10:48 AM
#8
Member
Join Date: Mar 2007
Location: Aurora, Illinois
Posts: 133
Likes: 0
Received 0 Likes
on
0 Posts
Car: 85 Camaro S/C
Engine: 350 Vortec 330 HP 650 Demon Carb
Transmission: 700R4
Axle/Gears: 3.42 Richmond Powertrax
Re: 305 With Quadra Jet Needs someting more
You are correct sir, those Holley's won't work on 84 305 because of computer controlled carb & Distributor. There is a Quadrajet that is remanufactored by Holley that is a replacement for his old stock one. It's pt#64-70087. Cost $400+. Sorry about the wrong info on the Holley's.
02-04-2012, 10:53 AM
#9
Moderator
Join Date: Jan 2000
Location: Mercedes Norte, Heredia, Costa Rica
Posts: 20,981
Likes: 0
Received 9 Likes
on
8 Posts
Car: 1984 Z28 Hardtop
Engine: 383 Carb
Transmission: 4L60
Axle/Gears: 3.54 Dana 44
Re: 305 With Quadra Jet Needs someting more
They'll work if you replace the distributor and you don't care about emissions legality. They're just not especially performance-oriented.
02-04-2012, 02:00 PM
#10
Moderator
iTrader: (14)
Join Date: Mar 2000
Location: Littleton, CO USA
Posts: 43,169
Likes: 0
Received 35 Likes
on
34 Posts
Car: 82 Berlinetta/57 Bel Air
Engine: LS1/LQ4
Transmission: 4L60E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
So, you had a bad experience with a q-jet in the past. What does that have to do with this one?
Only reason I'll echo Apeiron's recommendation is you have a T5. Get a Performer intake and a 600 Holley double pumper. And a vacuum/mechanical advance distributor, as mentioned.
Then $700 later, you'll know the q-jet isn't what's holding back performance with your 305.
Only reason I'll echo Apeiron's recommendation is you have a T5. Get a Performer intake and a 600 Holley double pumper. And a vacuum/mechanical advance distributor, as mentioned.
Then $700 later, you'll know the q-jet isn't what's holding back performance with your 305.
Thread
Thread Starter
Forum
Replies
Last Post
86CamaroDan
Engine/Drivetrain/Suspension Parts for Sale
2
09-29-2015 10:08 PM
