did your truck have CCC originally 85 might non ca truck might not be equipped. I am not sure when they be came standard federally
CK5
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Need some EFI advice
- Thread starter Operator238
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That I’m not sure of. I could however get any Quadrajet but there are so many different PNs
m4me is the q jet with an electric choke. I would pass on the ccc carb. they are temperamental require an obsolete computer. But if you really really want one I have 2 in serviceable condition.
What about the Jet reman’d units from Summit?
What’s wrong with the carb you have?
Throttle response sucks, idles rich, fuel pressure sensitive to name a couple
Well a new carb is going to need tuned same as an old one, so I’m not sure a new carb puts you any further ahead
So your truck is California emissions package? If you look at the item description it is clearly a car carb and not a truck one - unless it's a CA package. For the rest of the country (and exports), truck carbs only had one connector, for the accelerator pump. Are there connectors for the TPS, MCS and such just laying on the intake? Is the ECM still there? That carb can not run right without all of that stuff in place. Actually, it might not run well even with it! The only reason to go back to CCC is if your local emissions rules want everything stock. Since you're already running another carb, that's probably not the case.So if I were to use this, do I just plug all my sensors back? Currently the previous owner put an Edelbrock 1406 and non factory distributor.
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Swapping from your carb to a Q-Jet is certainly not a bad idea. They're quite good for street driving and off-roading. I wouldn't want a CCC one, though. You will probably have to set the idle mixture and the choke hold-offs at least. It may want some jet or rod adjustments as well, but pretty much every carb will need some adjustment.
I would think not, unless your truck was originally a California rig?
Haven't dealt with that system in a very long time, but the carbed computers were all cars (that weren't EFI) from 1981-1990, and very few trucks. I want to think it was ONLY California trucks that got CCC? And only some of those.
Haven't dealt with that system in a very long time, but the carbed computers were all cars (that weren't EFI) from 1981-1990, and very few trucks. I want to think it was ONLY California trucks that got CCC? And only some of those.
Not to be confused with the ESC (electronic spark control) which came on my 305 equipped 84 K10. The computer was pretty huge for just controlling spark knock!
i just tossed one of them boxes . was as big as the tbi computer up under the dash in the same spot .
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When I went to fuel injection it was cheapest to stay stock gm. A few years ago 4 wheel and off road had an article about the big 3 car companies and the millions they spent on fuel injection R and D. They tested several and their view was stay with factory.
My past experience tells me that even a new carb will need some tuning. Yes, it could have better results if there is a problem with your current one that tuning can't fix. I have had a couple of 1406 Edelbrocks, one on a 350 another on a 406 until I found a 750 Edelbrock for it.
Even ran a 1406 on a big block for a bit, until I found a good Q-jet for it. So I don't understand what is keeping yours from providing better results.
I liked the TBI setup that was on a '72 that I had. Very reliable and worked well. It had a chip in it from Howell EFI.
I like the Edelbrock PF4 in my '90 in many aspects, even though I don't feel that I have it set quite the best yet. I had a few missteps of my own slow me down, but I am getting past those now.
I like how well the MSD Atomic system has worked for Rory on his Trailmater. But I don't know where the ECM is on that system.
Even ran a 1406 on a big block for a bit, until I found a good Q-jet for it. So I don't understand what is keeping yours from providing better results.
I liked the TBI setup that was on a '72 that I had. Very reliable and worked well. It had a chip in it from Howell EFI.
I like the Edelbrock PF4 in my '90 in many aspects, even though I don't feel that I have it set quite the best yet. I had a few missteps of my own slow me down, but I am getting past those now.
I like how well the MSD Atomic system has worked for Rory on his Trailmater. But I don't know where the ECM is on that system.
i will just say this here ...... MSD is owned by HOLLEY brand these days ....... so do your home work on who you like for what level you wish to play . 
Yes, I have known that for years. Doesn't give me a great feeling, however it still doesn't change what I have seen from watching Rory's videos. And keep in mind that when he's using his welder, the alternator is only supplying power to the welder, NOT the truck electrical system. So voltage variances most likely happen without noticeable problems.i will just say this here ...... MSD is owned by HOLLEY brand these days ....... so do your home work on who you like for what level you wish to play .
I have met and talked with Rory and I don't doubt his results with that system. It doesn't guarantee that they are all perfect EFI systems though.
I run a sniper 2 now and use a tanks Inc retrofit in tank pump kit. Works great.
I've been running the Atomic since they came out. It's on a bone stock Buick 340. I'm running the Holley in tank fuel pump module. Also running the MSD dist to control timing. Zero issues. Now that Holley owns MSD, I might look at other options.
I used sniper. External pump. It's a decent set up and pretty quiet.
Let me ask yall this.
Is the Edelbrock 1904 Qjet a good carb? Is it too much carb (795cfm) for a crate 350?
Is the Edelbrock 1904 Qjet a good carb? Is it too much carb (795cfm) for a crate 350?
I have the 1902 on my truck been a great carb for me. Where did you find a 1904 ? is new ? Edelbrock quit making them awhile back.
A Q jet will never give more cfm than the engine can use. Might have to tune the jets and rods for engine. I tried a few changes, and I've fiddled with numerous times, always end up putting back together the way it came.
A Q jet will never give more cfm than the engine can use. Might have to tune the jets and rods for engine. I tried a few changes, and I've fiddled with numerous times, always end up putting back together the way it came.
