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Old 10-11-2016, 03:35 PM   #1
cmg96
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Can I ask your opinions?

I have a 69 GMC 1500 and it has a 350 in it with a small blower. It still has stock manifolds and what looks to be a smaller holley. I really want to get moving on it and just get it going properly. I am in Austin, TX and have a couple options for shops but I am getting conflicting advice. I would really like to find someone that knows what would be best and willing to chat about it. I want to do and put a plan together to do things in the right order. I am still hunting for a money tree but until then I have to do things in stages.

* I have been told work on the cooling first.
* I have also been told get headers and let it breathe.

I am on a scale of 1-10 I am a weak 6 or maybe a 5 when it comes to anything motor related.

What I would like is some advice or if you know someone here in austin, dripping springs, or surrounding areas let me know your thoughts

** If this should be in another thread please let me know. I sent a note to an admin but did not get my question answered yet.
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Old 10-11-2016, 10:02 PM   #2
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Re: Can I ask your opinions?

Not really sure, I'm in El Paso if you want to bounce some ideas around my buddies all about it, P.S if you know were I can find a 1962 C10 bench seat for cheap let me know. Thank You.
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Old 10-12-2016, 01:36 AM   #3
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Re: Can I ask your opinions?

Thank you I will keep my eyes open for a bench seat.
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Old 10-12-2016, 08:56 AM   #4
Greenlee
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Re: Can I ask your opinions?

I think headers are a good idea for your set up. With respect to the cooling system, it looks like you are missing the fan shroud. That might help it run cooler.
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Old 10-12-2016, 10:48 PM   #5
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Re: Can I ask your opinions?

What problems are you having with it?
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Old 10-16-2016, 01:43 PM   #6
cmg96
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Re: Can I ask your opinions?

I just got my truck back and it really seems they don't want to work on it. I have a bunch of small projects that will lead to a larger one. When I hit the gas it sounds like a low whoopie cushion and it feels as though it sluggish. The big issue is I have no idea how the motor is built so I need to figure this out.
My plan was to start fresh with a new carb then msd kit. It has manifolds not headers so that may be another symptom. I would really like to find someone local but have yet to find someone.
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Old 10-16-2016, 02:10 PM   #7
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Re: Can I ask your opinions?

So you got a 'huffer'!!
Sometimes pics help jog some knowledge outta people!
Let's see your motor!
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Old 10-16-2016, 02:22 PM   #8
cmg96
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Re: Can I ask your opinions?

Here are some pictures. I will find a link to a few others.
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Old 10-16-2016, 02:40 PM   #9
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Re: Can I ask your opinions?

How are your mechanical skills?

Do you plan on keeping the blower?

You might be better with a stock intake for your holley carb.
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Old 10-16-2016, 02:46 PM   #10
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Re: Can I ask your opinions?

I really like the look and sound of my blower. I can read, watch and learn pretty well. I am brand new to sbc motors. I have been looking at just getting a new carb no idea what model or what they have done to it. It has a red cam in it.

If the blower stops me from getting to my goal that would be the only way I would want that to go away.
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Old 10-16-2016, 02:50 PM   #11
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Re: Can I ask your opinions?

Do you have any specs on your motor?
Cam?
Compression?
Heads?
Block casting numbers?

Pop your air cleaner off so we can see your carb better.
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Old 10-16-2016, 03:23 PM   #12
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Re: Can I ask your opinions?

Here are some pics of the carb.

https://drive.google.com/open?id=0Bw...WhHdGdVRHE1X3c

http://youtu.be/BuhQ4dUrjNM

Last edited by cmg96; 10-16-2016 at 03:36 PM.
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Old 10-16-2016, 03:46 PM   #13
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Re: Can I ask your opinions?

A double pumper of some size to be determined.
THere's a list number on the front drivers side of the air horn that'll tell us what it is.

You could keep the blower but if this is your first rodeo with a sbc then you might be in for a lot of heartache and head scratching.

But you gotta learn sometime!

Do you have a timing light and a vacuum gauge?
Are you gonna learn how to do it or find someone to do it for you.
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Old 10-16-2016, 04:01 PM   #14
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Re: Can I ask your opinions?

It's a small blower might as why learn. I do not have a timing light or vacuum gauge yet. I have been buying tools as needed. I also have had work done but I want to learn.
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Old 10-16-2016, 04:25 PM   #15
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Re: Can I ask your opinions?

I should get a rebuild kit could save me $500. what do you think?
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Old 10-16-2016, 05:08 PM   #16
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Re: Can I ask your opinions?

It's a 750.
Why rebuild it? What makes you think it's a problem?
Basics first!
Tune up!
Timing check and set.
New plugs!

I see you have an hei. Does it have the correct dedicated 12 v wiring to it?
Do you know how to tell if it does or doesn't?
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Old 10-16-2016, 05:13 PM   #17
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Re: Can I ask your opinions?

I am just going by what I have been told by a local mechanic. According to my receipts it has a new float, power valve, fuel filter and oil change
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Old 10-16-2016, 05:25 PM   #18
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Re: Can I ask your opinions?

Well like I said before!!
Check your wiring to the hei, get a timing light and check your timing, get a vacuum gauge and check your vacuum.
And go from there.
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Old 10-16-2016, 05:30 PM   #19
cmg96
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Re: Can I ask your opinions?

Will do and will let you know.
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Old 10-17-2016, 12:05 AM   #20
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Re: Can I ask your opinions?

You should also check the hei vacume advance. They need to be recurved or locked out for a blower.
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Old 10-17-2016, 09:27 AM   #21
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Re: Can I ask your opinions?

Using the Holley with a blower such as this, requires the carb to be boost referenced.

The power valve will never open the way it is, there is always a strong vacuum as it is and does not allow the power valve to open.

The vacuum source needs to come from below the blower, running a vacuum line from there and altering the carb to accept this new vacuum source will allow the power valve to open under acceleration.

Without the power valve opening, there is a very lean condition while accelerating.
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Old 10-17-2016, 01:46 PM   #22
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Re: Can I ask your opinions?

DO NOT run the eng with the nut on the air cleaner stud (without the air cleaner) plug the power valves and jet up?
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Old 10-17-2016, 02:01 PM   #23
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Re: Can I ask your opinions?

Thanks I took the air cleaner off only to take a picture that was requested. I put the nut and washer on so I would not lose them again. They just replace power valve at the shop. This carb needs a little attention based on some other members opinions.
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