help\advice Camaro-327 build

1967 camaro
327
stock flattops
powerglide-I am installing a 350 turbo\B&M shiftkit,2600 stall in 2 weeks
edelbrock performer rpm 70CC heads-angle plugs
patriot tri-5 headers
2.5 magnaflow w\X-pipe
holly 650 doublepumper
edelbrock performer air-gap
compcam XR264HR roller
compcam ultra-gold 1.5 rockers
stock rearend,probably 3:08-want 3:55-3:73
stock dist with ignighter2-blaster2 coil

I started the project to build a weekend street machine but the car MAY turn out to be a daily driver if my truck craters out. I purchased the air gap so i could keep the existing Q-Jet before i put the holly on, the Q-Jet really did a fantastic job but i was not satisfied with the with the smoothness of the throttle response-This could have been attributed to the timing at the time?? I am at a point where i think the timing is good-no pings and no heavy gas smell-10-12 degrees at idle. If i go less i get backfire, if i go more i get heavy gas smell. Whatever i try with the timing i do not get what i want from the throttle in terms of smoothness through the range. Plugs and wires are new and have been checked many times. I have a wire running from the battery to the coil to give 12V that i use because i was told the stock ignition only fed 8-9 volt in "run" and the igniter 2 needed 12. Using this wire or not i seem to have the same issue. Stumbles off the line if i give full throttle, stumbles at different RPMS when full throttle is given. Carb was adjusted by a lifetime mechanic friend and i have taken his advice on MOST of the parts. I not a mechanic but-shadetree. I run premium gas all the time. To me the obvious answer would be a mis-adjusted carb but he tells me i need a stall converter and probably gears.I think i may go with a littlemore agressive COMP cam or try 1.6 rockers. Any help\opinions are greatly appreciated-thanks for reading  

I think your fuel smell would be partially from the low compression of your engine.

flat 4vr pistons and a 70 cc head would be around 8.75, the cam is not that big but probably  huge in the small displacement 327.  as far as I know the biggest head GM installed on a 327 was a 64cc,   I have a set of old truck heads that are 58cc.  I just cant help but think that low compression is a contributor to your problem.  
 

 I think your engine would have been much better off with a .450-460 lift cam.

What runner size do the eddy heads have?  Have you tried a different distributor just to see if you get any good changes?

10-12 at idle and 34-36 all in at 2000 is going to be really close on the timing, I set all mine this way.  

oh and 1.6 rocker arms would make this engine worse.  

Here is a 350 that I built with summit 2.02 heads 72cc  flat tops and a lunati .458 lift cam.

quad jet, hei,  even with the small .458 cam it pulls hard in the 4100# truck all the way to 6000 rpm.

not trying to bash your combo but this is what I am basing my opinion off of

copy and paste the vid:    http://youtu.be/GTvzKmrhYsc  

.. Chevelle83's link:

http://youtu.be/GTvzKmrhYsc  

.. This engine should run great as is... carb. prolly isn't tuned right... secondaries air door not adjusted right... floats not floating... what size engine did it come off of? A properly tuned Q-Jet should work fine and give best gas mileage. A double pumper isn't needed with an automatic transmission, more for quick response when shifting a stick car... Older cars smelled like gas, add the 1980's sealed carb. venting system to get rid of gas fumes smell...

.. Yeah, I would have gone 64cc heads for higher compression ratio, more MPG, snappiness in response, and low speed torque...

.. But that mild 212/218 cam should work great with that compression ratio... it's lift is fine... 1.6 rockers may not work that well with the radical lobes of that cam...

.. I'd use a mild ignition advance curve with that stock torque converter and only 2-speed tranny, advance not all in till 2500-3000 RPMs...

.. Basically, find someone who can really tune a Q-Jet carb... or send it off to Sean Murphy Induction... it should work perfectly... just like EFI... and start quicker than EFI...  

Hi there,
1st things 1st..
If you are running main jets larger than 70's
then change them irrespective of what follows.
 even 68's will be a good start...
 What air cleaner are you using??  Skyeking  
skyeking

It HAD a q-jet,it now has 650 double pumper, today i jacked around with the carb-leaned it a little,seems better but still at certian times: rpms\throttle positions it seems to bog-  

What is the actual part number on that 650 Holley Carb? Something doesn't seem right, either the rear gears are very high, or the carb is bigger then a 650. Any respectful small block Chevy will run with a 650 Carb. Send us those numbers....

Is the distributor advancing properly??  
Thanks
Bob  

.. A doublepumper 650 CFM Holley is going to bog if floored at too low an RPM... that's just a fact... especially with a stock torque converter and sluggish 2-speed PowerGlide tranny and stock rear end ratio...

.. Guy stopped by the other day with a bog problem with a 327 and little 390 or 450 CFM vacuum secondary Holley I sold him... we disconnected the secondaries and it ran fine with no bog... so I had him pick up a Holley spring kit and put the stiffer spring in the vacuum pot and then it worked fine with no bog even with secondaries hooked up and eventually coming in...

.. With a doublepumper, all you can do is only floor it enough for the primaries, then floor it all the way and add the secondaries when you get enough RPMs up to burn the extra air/fuel... just like we did before big vacuum secondaries carb.s were invented and used... that's what I did back in the day with my '57 Olds 98 with 277HP 371" V8... also with my '65 GTO Tri-Power with mechanical linkage to outside carb.s... at 1200 RPMs & above it would take all 3 2-bbl. carbs... but the rear tires wouldn't...  

Hi Buz,
 The 371 Olds went like a bird with an Isky 270 Hyd
 cam and a set of 394 heads on it.    
skyeking

the original heads that came off the camaro were 75CC the heads were only made that year(67) and only put on the camaro, maybe rare but crappy heads.. also came with a 2bbl. i put a date code correct 4bbl that really smoke the tires but had the timing off, the timing wasent corrected untill i had already put the holly on...i leaned it out to day with some positive results but still seems to bog at diffrent rpms\throttle positions.. Accelerator pump?? ALL parts are new and it IS a 650 doublepumper. seems to be too much gas or not enough spark? I lean towards the gas since the Q-jet that was on it before seemed to be really smoke the tires