700R4 Thoughts and direction please

[Razz2o4]

Okay, so some of you may have read my thread before where I was looking for help on my Holley 670 Street avenger on my ZZ4 Crate motor thats mated to a 700R4. I gave up and took it into Livernois Speed shop in dearborn. Detroit area for those of you living in the different parts of the US. The 670 was so bad that I could barely get the truck down the road without it stumbling and dieing out. I had an edelbrock 600 on it that was just insanely snappy off idle, very fun and ran great, but kind of died off around 3800. It was like it ran out of breath. So I took it to livernois had them tune in my 670 and told them I needed to get the 700 R4 dialed in. They said NO PROB we have done many 700 setups. Keep in mind the edelbrock setup did not have the proper arm for the TV cable but did have the new bracket and correct afermarktet TV cable. Well the detent with the edelbrock was set close but not close enough as it would pretty much just hang in 1st gear untill about 23-2600 RPM and then Chirp into 2nd. Now with the new setup it shifts alot better and more on time, but a hard acceleration from 1st to 2nd it slips and is sloppy. Just not firm at all.
The INSTALL.
They installed the Holley on a 1" spacer as they said the holley was not really setup for that stock ZZ4 manifold hence my issues not getting it running properly. SO the detent cable comes off the bracket and has about a 35 Deg rise upto the arm on the carb. Just does not seem like that would get the proper angle to me????? And this is after the morons tell me I need the Holley arm for the 700R setup. WTF is the point of the arm if your not going to move the cable higher to be paralell with the thing in the first place?
The carb setup. The 670 runs pretty good for a first gear jab to about 1/3 throttle but if you go past that it stumbles and back fires and falls on its face untill you come out of it. Is it too lean or do you guys think it might need more timing? I am going back to Livernois on monday to talk to the tech that did the install, but just wanted some insight and direction. After spending almost 600 dollars on this tune up that they performed, I am just a little irritated that it does not run better. I apologize if this thread is a little scatter brained, but I was laying in bed for about 45 Min and just needed to get it off my chest and see if anyone could point me in the right direction.

[Razz2o4]

No thoughts Idea's or direction?

[rfmaster]

They should have maintain the same cable geometry!

For a correct bracket I would check with Bowtie Overdrives in San Diego:

http://www.700r4.com/faq/whattv.shtml

I used their TV cable adapter bracket with Q-Jet. Give them a call - they have live (non Indian) operator that know how TV cable brackets should operate.

//RF

[tvblazer78]

Here is some info that may help..

And you need to look at Lokar's parts for the carb cable..

http://67-72chevytrucks.com/vboard/s...d.php?t=342160

[Razz2o4]

Thanks guys

[piecesparts]

Build your own brackets, like I did for my strokermotor. Mount the tranny brackets on the carb mounting bolts and use the base of the carb as a foundation for alignment.

[rfmaster]

Originally Posted by Razz2o4

Thanks guys

Look into Moroso 65050 - Moroso Throttle Cable Mounting Kit and B&M #130-64511 for correct arm length adapter. Call these companies, take photos of what you have and e-mail them to the tech support. You would be surprised what you may get. There are many options available out there, but dumping $600 for nothing is not one of them. Sorry for speaking out so bluntly.

//RF

[Razz2o4]

No, trust me rfmaster, I am still steaming about this whole bit. I have had this truck since my 16th birthday when my Grandpa gave it to me. This truck has been my pride and joy. Im 27 now and still cherrish it. My grandpa is 82, and was planning on taking it down to his house tomorrow and can't because of these Pricks!

[GotRust]

I have a ZZ4 that was having similar stumble problems. What are your plugs gapped? Mine were about .035 (old small block thinking). When I gapped them to .045 for the hei the problem went away. It worked for me. Good luck.

[grinch4om]

backfiring is almost always a lean condition, that said , total timing should be 32-36 degrees before TDC, all in by 3000 rpm. what is in the fuel system? fuel pump used? line size? restrictions? tank pickup? filter,curves, this all figures in to fuel delivery. if it pops off idle, lean if it noses over (like you said with the edelbrock) fuel delivery may be the culprit. check basics too i.e. vacuum leak etc the earlier advice on the 700 is correct. mine has a holley with the right lever and cold it shifts a little late but when warmed up it's fine