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Not to jack this thread but the gauge on my ‘69 RR shows way past full. Gauge comes up when you turn the key on and down when the key is off. It seems to just read excessively high. They gent who I bought the car from has said that it works just goes way out passed full when the tank is full...

Thank you very much for this advice. I’m checking compression as soon as I can, and will also do a leak down test. If that all checks out I may need to check the cam for sure. I suspect something really silly is happening here. It just doesn’t add up. Like you said it will be found! Thanks again!

Thank you for this detail, I really appreciate it!

Can anybody tell me if I go with something like an Edelbrock performer 383 intake with a Holley 750 and the stock air cleaner, will it clear the stock hood? What about a Torker, Performer RPM, or a Mopar M1?

*replace for a stock cam.... not ‘stick’ cam.

Yeah, it will be a street car only. I’m dealing with a stock 383 aside from a mild, unknown cam and it’s just running sluggish. I’ll figure it out and all I’m really after is for it to run as it should. I would like it to be decently healthy and with that mild cam I’m not sure if I should pull...

Okay, so a true double pumper is mechanical secondaries, manual choke? I’ve been told to use mech secondaries since it’s a 4-speed. Any merit or opinions on that?

hello everyone, Quick question, which aftermarket intakes will fit under the stock ‘69 RR hood using a Holley DP and the stock RR air cleaner with the ‘383 Roadrunner engine’ stamped lid cover? Thank you all!

I I thought about that as well. I may try the 600 and see what I get. Yes, the 670 is a double pumper, vac sec, and electric choke. The 600 is a single inlet Holley 80457 with vac sec and electric choke.

Thank you very much for this advice! I’ll keep working at it.

Yes, I believe it’s an avenger series. I’m considering pulling it and going to a 750. I just want to rule everything out and make sure I’m not making a mistake. I have good vacuum and it idles good, bit when setting the timing at about 12-14, it feels like the cam wants more initial timing. I...

Thank you!

*bogs under load; stomping it in second gear is very uneventful...

Folks: I have a ‘69 RR that I just purchased... stock (aside from an unknown mild cam), original, rebuilt 383, 4-speed. Stock intake, stock 906 heads, stock exhaust manifolds, unknown mild cam, Holley 670 DP (I just installed the 670). It had a Holley 600 on it when I bought it and I’ve just...

Thank you for this detail! Do you remember what you advanced the timing to?

Thank you all for the excellent advice. I tend to agree that the 600 Holley I have is too small for the car. It feels a bit sluggish and I feel like it could run stronger. I’m going to look into a Holley 750 and give that a shot. I may look into a different intake but hate to go away from the...

Thank you very much for your time and detail. I appreciate it!

I’m not certain on that but I will check. Would you say a 600 would be undersized? What about Vac secondaries?

*keyed 12V power

I am, and yes the choke has 12V power.