750 street demon on mopar big block not getting full throttle......

[HAHNAGON]

Not the only one seeing you have two threads going on the same issue....

Sorry. First time asking for help. I had an option of what to post it under.....like fuel, engine, mopar chat, 68-70, etc. I didn't know which would be best and didn't want to list it in the wrong area and not have the right people see it, so I posted it in more than one category.

 

[HAHNAGON]

Is there a spacer under that cable bracket?

You should try to get the throttle cable mount lower. By whatever means.View attachment 1495282⁶

Yes. Good point. Ok.

 

[HAHNAGON]

If that is a typical Holley throttle arm on the Demon you may need an adaptor to get the geometry correct. Holley 20-7 is the part.
Holley 20-7 Holley Throttle Lever Extensions | Summit RacingView attachment 1495271

View attachment 1495272

Ok. I think the street demon is different but I should have one somewhere. I'll look for it.

 

[HAHNAGON]

It's possible even with a spacer the toggle valve (third barrel) may catch on that intake which I guess you have a "69 301 383 with four holes. On my 440 I machined the intake to clear the google valve. I did not use a spacer on the 440 on my 70 Charger because I use the stock air cleaner. As it is the hood insulation just touches the pie tin.

View attachment 1495029

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View attachment 1495051

Thank you. I do have an edelbrock rpm intake that has cleared in the past and I will eventually swap for, but so far the spacer has given it enough clearance.

 

[HAHNAGON]

Is there a spacer under that cable bracket?

You should try to get the throttle cable mount lower. By whatever means.View attachment 1495282⁶

Well, you were right. I got the throttle down and it worked. Wow, the average person wouldn't think that would matter. Thank you so much for taking the time to help!

 

[Daves69]

You should try to get the throttle cable mount lower.

Yep, ya' need to pull downward.

Sorry, late to the show!

 

[moparedtn]

First, thank you for letting me join. I greatly appreciate it. Heres my current issue. I'm restoring resto-modding a 70 charger

 

[RemCharger]

Well, you were right. I got the throttle down and it worked. Wow, the average person wouldn't think that would matter. Thank you so much for taking the time to help!

You bet, it's a common problem with aftermarket cable brackets