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I called Eckler's, they and the EDL 5073 heads you described for a little over 1000 dollars. They also had Promax heads for about $800. My compression would be about 9.3 for the more expensive heads, and I would be under 9:1 with the Promax heads. Ya get what you pay for. As far as my...

Hey Tom, thanks for the info. I may look into the EDL 5073 heads from Summit. My guess is they will breath best, and give me better performance than vortecs anway. BTW, can you suggest a nice cam to complement the heads?

I have considered Vortec heads. You say GM still sells them drilled for my intake? I didn't know that..I have a Edlebrock performer I put on last spring, and would like to keep it. So do I contact a dealership for that? Do you know what compression that would give me? I've heard that used...

I am considering replacing my stock heads to a good flowing aftermarket heads. I'm looking for better flow, and higher compression. I don't really know where to start, but I want to replace the cam also. This is for street use. Any suggestions would be appreciated.

This could be due to ethanol. I had my float changed to one that was compatible, but I still primarily run strait gas though.

I put 35 psi in each tire. Looks good, rides great, handles great with no harshness = right thing to do.

LLCS, I'll move it a little tonight. It will be cool in the morning, and the engine will be bone cold. The carb is working very well, and all the linkage as far as I can tell is working. Also when the fast idle is engaged, the secondaries won't kick in. I noticed this myself. Backing off the...

Ok, I have the three screw adjustment. I think if I turn it clockwise, the choke will be less, meaning the butterfly will be more open than if I turn it clockwise and the chock will close more. Is this also controlling the fast idle tension? What say you?

Yes the butterfly opens, and closes when choke is engaged. I backed the screw another half turn beneath the choke linkage, and it went off high idle with ease this morning, but it was not as cold out either.

Sorry I'm late to answer this post, it went to my spam for some reason. So If they recommend 35 psi in 81, was it because of radial tires? Why would it be so drastically different otherwise?

I've been driving in cooler than normal weather, but It seems like I am having trouble with the carb staying in high idle mode. It is idling high as I approach operating temp, then it finally lets off, but later than it should. I located the screw that adjusts the cam tension if that's what...

So far what I have learned from this thread is to just leave it the way it is. It wouldn't be real stylish to have a hose hanging near the ground, and probably wouldn't work with headers. I have seen that junk that looks like black molasses inside the intake, and in carburetors, probably from...

Ok, there was a tube that long. BUT, would having a breather with a filter prevent this? By the way, my 69 Ford F100 had the same thing, a down draft tube, so it was being used post 64 maybe, unless it was arranged that way by a previous owner.

Well, I was thinking of venting it instead of letting all that junk coming from the crankcase go into the intake. My engine is has only about 10000 miles on it, but crankcase gasses are still there. When I removed the stock intake to replace it with a performer, I noticed how dirty it was...

Is it necessary to have the PCV valve routed into the carb? I can help but to wonder why all those crankcase fumes needs to go into the carburetor. Can it be plugged at the carb, and a breather installed instead?

I have noticed for a while the owners manual (77 Vette) calls for 20 lbs of pressure in the front, and 25 lbs in the back. This just doesn't seem right. It seems under inflated. Input would be helpful.

With some good body filler and paint to match, you could fix it yourself. From the looks of the pic it doesn't look that bad, unless I missed something.

I put Cooper Cobra 255's all around on my 77, and they fit with no rubbing. 77 has the same wheel well as 78 on up which offered 255 60's as a factory option. I was still skeptical about clearance, so the tire dealer said he would change them back to 225's if I had any rubbing, which I had...

I traced the vacuum line that connects to the heater control valve, and I discovered a crack in the small plastic vacuum line, preventing the control valve from working. This is why I was getting the heat through the ducts. Hard to imagine a 41 year old plastic vacuum line cracking;). I still...

Are you saying you pinch the inlet hose with vice grips?