Holley 4150 question

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Jan 25, 2022 | 06:49 PM

#21

riverwabbit703

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From: Clifton, virginia

Quote:

Originally Posted by Jebbysan

Bumping to 18 is strictly a test…..he will end up with over 40 total….but the idea here is to see how it performs at idle….even low speed running….then figure out what to do to limit the total….

Somebody needs to make an HEI kit with different weights….that pull different amounts….they would sell out!

Jebby

yes sir. I am bumping to 14 just for test since 24 is total mechanical curve spring is going to give me and take it from there. I think there’s lots HP left on the table on my motor as it sits right now

Jan 27, 2022 | 05:31 PM

#22

riverwabbit703

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From: Clifton, virginia

Quote:

Originally Posted by Jebbysan

I got the parts today. It’s a wasted of part where they send you weights and bushings and you can’t use them. Only thing out of 30 msd part is the light springs copper in color which brings it all in at 3000. I called msd and said what a waste it is but they said it’s just way they are packaged. Anyway, springs are installed and tomorrow or Saturday I will fire her up and retime and retune. I don’t even know what the even pack those black springs maybe for track and race purpose. Msd also said that 8428 kit is mainly for GM stock HEI where they need to use the bushing and weights. For my msd street fire, only the spring is needed.

Jan 28, 2022 | 06:37 PM

#23

riverwabbit703

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From: Clifton, virginia

Quote:

Originally Posted by Jebbysan

got the kit in and set timing mixture, idle, now new issue. I am slowly loosing my mind. I ve posted the new issue about choke and fast idle. I a, able to pull 12.5 inches of vacuum now at 650 rpm. Previously only 9. At least thank you on this part.

Jan 28, 2022 | 07:14 PM

#24

Rescue Rogers

Is my vette stock?? HAHA

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You should keep it all on one thread. YOu are going to get the same questions everytime you repost and you will pull out even more hair answering the same questions multiple time

Jan 28, 2022 | 10:51 PM

#25

riverwabbit703

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From: Clifton, virginia

Quote:

Originally Posted by Rescue Rogers

You should keep it all on one thread. YOu are going to get the same questions everytime you repost and you will pull out even more hair answering the same questions multiple time

my apologies… should have checked simple stuff before stating a thread. High idle at startup and restart after engine hot was caused by choke not getting 12 volts. Re wired to 12v switched source and choke plate is now opening.