Search results for query: *

Ok. Makes sense. This just seemed like a handy simple system. He showed it to me and it seemed pretty simple. It had the sensor and controller and the readout was just a row of red and green LED's. Center group was green and outer edges were red. He said it was handy because he knew if it...

Thanks Mattax. That's good information. I now see why you questioned the A/F curves on my Dyno graph looking so different and inconsistent. It would lead me to believe he wasn't applying the throttle consistently. The missing portions of data in the middle of runs doesn't help much either...

Thanks Mattax, that was interesting information. If I am understanding it correctly, the motor liked 18Initial/36 degrees the best and dropping to 17/35 not only hurt power, but narrowed (and lowered) the torque curve. I did notice that advance timing (36 or 37) didn't seem as different at...

Thanks Mattax! That's kind of what I'm thinking too. With the 3:23 gears in there and running it in 3rd gear, it did take a bit for the throttle to pick up and you are probably right about that being the reason he said it seemed "Lazy" I agree. It would be nice to know what the advance curve...

Thanks Rev. I had read that somewhere when trying to look up ported vs manifold vacuum. It IS an interesting read!,... and makes me feel like I have it hooked up the way it was originally intended to work. I know it runs better with the way it is hooked up now, and it used to run hot when it was...

If you are describing "Power Timing" as full mechanical curve, then timing is not 45*. Full mechanical advance at a steady 2600 RPM was 35* on his light (33* on my light) with vacuum disconnected and capped off. 45* on his light was at a steady RPM of ~2500RPM (with vacuum connected) using his...

Thanks AJ,.... That was kind of the point of this whole thread. I don't have much to compare to, not knowing what kind of numbers others are getting. I appreciate you giving me points of reference! You always read these articles where people claim to be getting these big monster horsepower and...

Hi Rob. Yes, I'm quite confident it stopped advancing. I can't tell you the exact RPM it stopped advancing off the top of my head, but I did roll the throttle up from 2600 to 3000 - 3200 a few times and timing was stable and not climbing within that range. I can watch it advance as I roll up...

Before replying to CrackedBack and AJ,.... Let me just say I appreciate all the information you guys are providing. I am learning a ton about how all this ties together. I will admit that how the advance system works has always been a little bit of black magic to me, but it is starting to make...

I was just saying I could put a T in the line so I can have the vacuum hooked up and still have it connected to the vacuum gauge. I did check the vacuum at different RPMs and the ported vacuum seems to climb very slowly as RPMs increase. As soon as I can get a chance, I will hook up the gauge...

Thanks Killer. I will take a look at the intake and see if there are any signs of the intake being milled.

Thanks Mattax. Lot's of good information you provided. Carburetor is the Barry Grant pre-Holley double pumper style design, not the new "Street Demon" square style carb (Edelbrock style). I have not been able to find any numbers on it to find out exactly what it is. It looks like a Road Demon or...

2600 21" manifold 4" ported 3000 22" manifold 11"ported

Ok,... Went and checked some things when I got home to answer some of the questions. Engine vaccum at idle hovers between 12 and 13 (connected to manifold vacuum port). I connected to the ported vacuum and no vacuum at idle. Vacuum jumps when I blip the throttle. Timing according to my light...

Dyno runs were from about 2000 rpm up to just under 5000 rpm. We didn't push it above 5000 rpm because we didn't know much about the motor yet and didn't want to push it too hard. Out of curiosity,... what is safe redline for these big blocks? I've always heard don't push it over 5500 for very...

I don't recall off the top of my head what the actual vacuum was reading, but yes, it was pretty steady. I remember thinking it was a little low, but I don't remember if it was around 11 or 13. I want to say it was running around 11 inches because I don't think I would have thought 13 was low...

I saw him disconnect the vacuum when adjusting the timing, but it was hooked up when the dyno runs were performed. Is there a reason it wouldn't be connected? I understand vacuum advance doesn't do much at WOT (because of vacuum drop at WOT), but I guess I didn't question if it should be hooked...

Yes. I used my vacuum gauge to set my idle mixture.

Thanks Dano. I have tried to contact the original owner twice to see if he found it. First response was "Nope", second response was,.... well, he didn't respond. I don't think he wanted to sell the car so now he just doesn't want to deal with it. You make a good point on degreeing the cam. It...

I will check that. I want to pull the plugs and check compression on all the cylinders anyway. Is there a way to determine lift and maybe duration by putting a dial indicator on the rocker and rolling the motor over?

I was just doing some reading about Demon Carbs and read that of the two ports I was mentioning, the rear port is constant vacuum and the front only has vacuum when the engine is revved. They said that the vacuum advance should go on the front port. I do not recall if there was vacuum on my...

I will say that the shop owner came out during testing and said it "Sounded lazy" and suggested giving it more timing, but was surprised to hear that we were already at 45. Do you think it may want more initial and less advance? Should I try pulling the vacuum advance and going back to straight...

Car had a new set of Champion RJ12Y plugs and a new Accel cap & rotor. The tech working on the car noticed it went a little rich in the middle of the first pull. He said he thought it might be dirty air tubes and shot some cleaner in four corners of the carb (Air tubes) and did another pull. The...

Here is the Dyno screenshot in case anyone wants to see it.

Hi Guys, I posted on this yesterday in my restoration thread, but thought it might make more sense to post here. I have a '67 Barracuda I am working on. My restoration thread will show what all I have done to it, so I won't repeat here. Basically, the motor was in it and running good when I...