Question about carburetor and header installation
06-24-2018, 04:01 PM
#1
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Question about carburetor and header installation
Hello, I was wondering if anyone has installed the hooker competition headers 5901-3HKR into a 340 duster? I was wondering how much modification was needed? Does the engine have to be pulled to install?
also, I installed a 600 CFM street avenger Holley carb on the engine. It’s adjusted as best as possible, but it’s still sending too much fuel into the engine and flooding it. I thought that the 340 duster came with the 800 CFM carb option stock? Is it a compression problem in the engine? Or is the carb just to big for a stock motor? I’ve been slowly buying an MSD ignition system with an electronic ignition controller to install. I just need to order the coil wire and ignition coil. Will that help my problem?
Thanks in advance
also, I installed a 600 CFM street avenger Holley carb on the engine. It’s adjusted as best as possible, but it’s still sending too much fuel into the engine and flooding it. I thought that the 340 duster came with the 800 CFM carb option stock? Is it a compression problem in the engine? Or is the carb just to big for a stock motor? I’ve been slowly buying an MSD ignition system with an electronic ignition controller to install. I just need to order the coil wire and ignition coil. Will that help my problem?
Thanks in advance
06-30-2018, 02:43 PM
#3
The 800 cfm was a thermoquad carb. 600 Holley should work fine I would suspect float problems or too much fuel pressure. Headers- only if it is going to be a race car. would require manual steering,mini starter,very low ground clearance.
07-01-2018, 10:10 AM
#4
Mopar Lover
Dude -
As TV said, the TQ 800 (spread bore) is a different animal from the square bore Holley, and 600 s/b OK for that application.
Since you changed the carb, just make sure your manifold and carb match. (IE, both are either spread bore or square bore.) If they don't match, just get an adapter. The 1" adapter is also a spacer and that couldn't hurt.
If you've made all the external adjustments, you may need to re-jet. See what you have in there now and drop down a few numbers.
You really don't need the MSD, the Mopar Orange or Chrome box with distributor will handle anything that motor wants. It's a lot cheaper and you won't notice the difference.
As for the headers, it's basically a "good luck" thing. There's always going to be some tweaking (yeah, get a bigger hammer). And the Hookers do have a tendency to sit low. Since it's an older motor, use Remflex gaskets. They compress and take up any head/flange irregulars.
Archer
As TV said, the TQ 800 (spread bore) is a different animal from the square bore Holley, and 600 s/b OK for that application.
Since you changed the carb, just make sure your manifold and carb match. (IE, both are either spread bore or square bore.) If they don't match, just get an adapter. The 1" adapter is also a spacer and that couldn't hurt.
If you've made all the external adjustments, you may need to re-jet. See what you have in there now and drop down a few numbers.
You really don't need the MSD, the Mopar Orange or Chrome box with distributor will handle anything that motor wants. It's a lot cheaper and you won't notice the difference.
As for the headers, it's basically a "good luck" thing. There's always going to be some tweaking (yeah, get a bigger hammer). And the Hookers do have a tendency to sit low. Since it's an older motor, use Remflex gaskets. They compress and take up any head/flange irregulars.
Archer
07-01-2018, 10:14 AM
#5
Super Moderator
He must have fixed the problem, hasn't been back since his post.
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