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Search found 125 matches

by c1500sbc
Fri Jun 11, 2021 6:16 pm
Forum: Engine Tech
Topic: Pick a head, any head.
Replies: 24
Views: 1063

Re: Pick a head, any head.

You keep this up, we going to name you "The Carb Whisperer".. When you done fixing this Holley you can get back to finishing the job on that Edelbrock carb. Haha! I gave up on the Edelbrock. Sure did learn a lot from guys like yourself though. No matter what I did I couldn't get the motor and edelb...
by c1500sbc
Fri Jun 11, 2021 10:03 am
Forum: Engine Tech
Topic: Pick a head, any head.
Replies: 24
Views: 1063

Re: Pick a head, any head.

Someone should rename this thread "why not to jump to conclusion!" :D Here is a copy of the instructions I pulled on adding the secondary tube. All of it makes sense. Pretty straight forward, except for the very last part. At the bottom it says to " Plug the passage where you removed the lead plug, ...
by c1500sbc
Thu Jun 10, 2021 5:22 pm
Forum: Engine Tech
Topic: Pick a head, any head.
Replies: 24
Views: 1063

Re: Pick a head, any head.

You are wrong on the heads holding you back, it's the Avenger carb that 's the problem. Would you mind explaining why the carb, from an Avenger to a a double pumper, would make such a difference? If it's a 750 Avenger there is no reference tube in the pri side just a hole and those carbs are notori...
by c1500sbc
Thu Jun 10, 2021 2:39 pm
Forum: Engine Tech
Topic: Pick a head, any head.
Replies: 24
Views: 1063

Re: Pick a head, any head.

I’m looking to change the heads on my 383. Currently running some Promaxx maxx series 200 heads. I really think they are holding the motor back. Mostly a street driven truck. 95 Silverado short box, 2wd with a 5 speed. 10.68 static compression. Running 93 pump gas. Street avenger carb. Crower 238/2...
by c1500sbc
Thu Jun 10, 2021 1:28 pm
Forum: Engine Tech
Topic: Pick a head, any head.
Replies: 24
Views: 1063

Re: Pick a head, any head.

Just looked up the 2015 SS looks like the test showed 12.9@110, that's why it pulled away from your truck. I had a 383 in my 4200 lb. Monte it only ran 103 1/4 mile & had just about exactly the same chassis dyno numbers as you. What's your truck weigh? I had a 95 GMC, it was about 4700, 2wd ext. ca...
by c1500sbc
Thu Jun 10, 2021 12:51 pm
Forum: Engine Tech
Topic: Pick a head, any head.
Replies: 24
Views: 1063

Re: Pick a head, any head.

I am curious exactly what it is you dont like about the performance ? If you had never seen the dyno numbers what would you say was wrong with the way it runs now ? It runs great, but it just doesn't have the power I thought it would. I was expecting something with the ability to run with a newer S...
by c1500sbc
Thu Jun 10, 2021 10:30 am
Forum: Engine Tech
Topic: Pick a head, any head.
Replies: 24
Views: 1063

Re: Pick a head, any head.

Keep the heads, get a porter to give them a tidy up. Heads are not your bottleneck. Get the comp up to 11:1, ditch the street avenger & put a proper pumper carb on there (the brawler 750's work good on this type of engine). Pop a holley strip dominator 300-25 on it, add 10 deg of cam duration & swi...
by c1500sbc
Thu Jun 10, 2021 10:17 am
Forum: Engine Tech
Topic: Pick a head, any head.
Replies: 24
Views: 1063

Re: Pick a head, any head.

Sorry, I guess I should have expanded on what I meant. I appreciate the interest/help and the questions. The motor only put down 320ish to the wheels and 340 ish torque. Sorry can't recall the exact numbers. This is through a manual 5 speed as well. 2wd truck. As I have read, and y'all have reiterat...
by c1500sbc
Thu Jun 10, 2021 12:01 am
Forum: Engine Tech
Topic: Pick a head, any head.
Replies: 24
Views: 1063

Pick a head, any head.

I’m looking to change the heads on my 383. Currently running some Promaxx maxx series 200 heads. I really think they are holding the motor back. Mostly a street driven truck. 95 Silverado short box, 2wd with a 5 speed. 10.68 static compression. Running 93 pump gas. Street avenger carb. Crower 238/24...
by c1500sbc
Thu May 20, 2021 10:22 am
Forum: Engine Tech
Topic: Man, it smells - Just the nature of the beast?
Replies: 11
Views: 1006

Re: Man, it smells - Just the nature of the beast?

Without being there its hard to say but a lot of younger guys have never had to experience how the cars of the 60's and 70's ran as far as emissions go. It was pretty normal for cars to run pretty rich and stink the place up, especially when cold. I would try loosening the choke up so it is not clo...
by c1500sbc
Thu May 20, 2021 8:58 am
Forum: Engine Tech
Topic: Man, it smells - Just the nature of the beast?
Replies: 11
Views: 1006

Man, it smells - Just the nature of the beast?

I have a fairly stout, street 383. Running a Holley street avenger 770. I appreciate y'alls help with the choke. It's working now, but man it smokes quite a bit on cold starts. I'll have to pay attention to the color next cold start but i'm thinking its fuel. That subsides once the truck warms up an...
by c1500sbc
Wed May 19, 2021 8:38 pm
Forum: Engine Tech
Topic: Holley Street Avenger - choke stuck
Replies: 8
Views: 277

Re: Holley Street Avenger - choke stuck

I figured it out. The choke wasn’t assembled correctly. The coil wasn’t attached to the tang on the choke arm. The coil wasn’t trying to close the choke and that’s what was causing the fast idle cam to stay in place and the choke to just stay fully open. Re assembled the choke correctly, now the cho...
by c1500sbc
Wed May 19, 2021 7:12 pm
Forum: Engine Tech
Topic: Holley Street Avenger - choke stuck
Replies: 8
Views: 277

Re: Holley Street Avenger - choke stuck

Okay, little revision on the issue. I did find that when cold, I am able to hold the throttle just a hair open by hand, and then can easily move the red fast idle cam up or down. The problem I think i'm having is the choke is not "trying" to close when the truck is cold. Meaning there is no tension ...
by c1500sbc
Wed May 19, 2021 5:46 pm
Forum: Engine Tech
Topic: Holley Street Avenger - choke stuck
Replies: 8
Views: 277

Re: Holley Street Avenger - choke stuck

1980RS wrote: Wed May 19, 2021 3:58 pm I just got a Holley 770 last Sunday and the choke does the same thing. I take and file the sides of the choke plate and no more sticking.
I'll try that! Thank you
by c1500sbc
Wed May 19, 2021 5:10 pm
Forum: Engine Tech
Topic: Holley Street Avenger - choke stuck
Replies: 8
Views: 277

Re: Holley Street Avenger - choke stuck

Of course. It's designed to work like that. You must " Set The Choke " by tapping the gas pedal when the engine is cold. Typically, it doesn't take much movement of the gas pedal to get the choke to close. You only have to lift the fast idle screw high enough to clear the high step of the fast idle...