Carb for a 302

[dagoof]

Damn nice job on your install.......

Thanks, I just got it put back together and running and I am now finding out that I have a head gasket leak.

I've still got bugs to work out (like the carb). Eventually, I'll get everything worked out and put together right with fender skirts and the works.

I guess I should make a build thread somewhere. If nothing else it would help me remember all of the crap that I have done so far.

 

[doorgunner]

Purdy engine!!!!

my 4150 won't stumble unless I go about 15 sizes smaller on the main jets....

(FYI...#64 jets work well on stock 350.......#45 jets make it stumble at w.o.t.)

what size main jets do you have in it now? (maybe you could go bigger)

Are the floats set at the right height (check out the Holley site for info on setting floats)

How good is the "squirt stream" when you w.o.t the carb (it should spray the throat of the carb pretty good)?

Timing is set at ?? degrees BTC ?

Like baddad said....tune-up/tune-up/tune-up.......

 

[baddad457]

It seems like there is always going to be a lot of debate about how big of carb to use on any given engine.

Holley told me that the 600 that I have is the right size, but I don't particularly like it. I need to go through it, and I suspect that the accelerator pump might be messed up based on the way the truck falls all over itself when you punch it.

I would actually like to get into a 4150 style carb. I like the dual feed setup, and any of the 4150's would let me feed from the passenger side instead of having it in the way of my linkages. Also, I hate the gold/dichromate color. I would rather have a silver/polished aluminum look.

Unfortunately, it looks like the 4150's only come in 570 or 670 cfm or a 650 cfm if I go with a double pumper.

Holley makes nearly all their carbs in all configurations. Do you want a mech secondary or vacuum ? Do you even know what a 4150 Holley is ? Or what differentiates it from a 4160? 4180? And based on what you've posted here, you need to take a breather and calm down. Taking the slack out of the accellerator pump linkage takes all of a couple of minutes. No need to "go thru the carb" You need to buy a book on Holley's and take the time to read it and comprehend what's there. All it needs is some tuning and TLC.

 

[dagoof]

Holley makes nearly all their carbs in all configurations. Do you want a mech secondary or vacuum ? Do you even know what a 4150 Holley is ? Or what differentiates it from a 4160? 4180? And based on what you've posted here, you need to take a breather and calm down. Taking the slack out of the accellerator pump linkage takes all of a couple of minutes. No need to "go thru the carb" You need to buy a book on Holley's and take the time to read it and comprehend what's there. All it needs is some tuning and TLC.

Gee thanks.......... just add more TLC, got it......... Anything else?.......

FYI, I have checked and adjusted the accelerator pump linkage, and yes, I do know the difference between a 4150, 4160, and vacuum/mech secondaries.

I'm sure that with a little time and effort I can get it running right. I know it needs new jets now that it is at 5000 ft elevation, and I really suspect that the power valve may be blown. I'm not the first owner of this carb, so that is why I plan on going through it. I started this thread to find out what other people are running and what they suggest.

 

[baddad457]

Based on what you've posted, it's obvious to me that you don't know. Tell me what's different between a 4150 and 4160 .

 

[baddad457]

I would actually like to get into a 4150 style carb. I like the dual feed setup, and any of the 4150's would let me feed from the passenger side instead of having it in the way of my linkages. Also, I hate the gold/dichromate color. I would rather have a silver/polished aluminum look.

Unfortunately, it looks like the 4150's only come in 570 or 670 cfm or a 650 cfm if I go with a double pumper.

Like what you posted here.

Dual feed Holley's come in both 4150 and 4160. And a 650 Double pumper is also 4150 (as are all the DP Holley's). A 3310 750 is a 4160, same as the 1850 600 you have now.(I haven't even seen it, but I'm betting that's what you have, or it's one of the 600's variations)

 

[doorgunner]

if I can keep up with baddad....I'll never be an expert, but at least I'll be a Rookie that can fix my stuff right....

dagoof......hang in there....he's just tryin to get you to get the best outta what you got!
(and he's good at gassin people up, too!)

 

[dagoof]

Based on what you've posted, it's obvious to me that you don't know. Tell me what's different between a 4150 and 4160 .

What is this? 20 Questions? No one told me that I had to pass Baddad's quiz before I could post on TRS. Who made you god?

4150's have metering blocks and jets on both sides, and 4160's have non adjustable secondaries.

Also, the easiest way to identify them is that most 4150's have center hung floats that can be fed from either side, while the 4160 usually have side hung floats.

 

[dagoof]

Dual feed Holley's come in both 4150 and 4160. And a 650 Double pumper is also 4150 (as are all the DP Holley's). A 3310 750 is a 4160, same as the 1850 600 you have now.(I haven't even seen it, but I'm betting that's what you have, or it's one of the 600's variations)

Yes, you can get all different size and types of carbs from holley. Thanks.......

Correct. I do have a 4160 and it is 600 CFM. I'm asking for advice, not a lesson.

I want to know what carb others are running, so that I can get a better feel for if my 600 is on the small side or the large side. Eventually, I'd like to upgrade to a 4150 because, with the center hung fuel bowls, I can plumb it from the passenger side instead of getting in the way of my throttle linkages, and also because the 4150 is a superior carb with more adjust-ability.

Most of the 4150's out there are 570 CFM, 670 CFM, or 650 CFM if you go with mech secondaries.

 

[dagoof]

Get A Life!!

Like what you posted here.

Dual feed Holley's come in both 4150 and 4160. And a 650 Double pumper is also 4150 (as are all the DP Holley's). A 3310 750 is a 4160, same as the 1850 600 you have now.(I haven't even seen it, but I'm betting that's what you have, or it's one of the 600's variations)

You know when some one is looking for information and possibly a little help, claiming through your arrogance that you are the only expert and their just stupid is of no help at all!!!! Nobody needs to play 1st grader to you, you either have some constructive information to help with or stay off this thread and strut your arrogance some where else where it might be wanted! By the way this is not the young man asking the question, this is some one who was working on and engineering Holley's before you were even a gleam in your fathers eye!

 

[dagoof]

Purdy engine!!!!

my 4150 won't stumble unless I go about 15 sizes smaller on the main jets....

(FYI...#64 jets work well on stock 350.......#45 jets make it stumble at w.o.t.)

what size main jets do you have in it now? (maybe you could go bigger)

Are the floats set at the right height (check out the Holley site for info on setting floats)

How good is the "squirt stream" when you w.o.t the carb (it should spray the throat of the carb pretty good)?

Timing is set at ?? degrees BTC ?

Like baddad said....tune-up/tune-up/tune-up.......

Thanks, Doorgunner.

From what I understand, I'm going to be needing different sized jets at my higher elevation. (5000 feet in ID)

I'll check the squirt stream like you said. I'm betting that you are right and the accelerator pump is screwed up. That would mean that when I stomp on it, the butterflies open up allowing all the air to rush in, but without that extra squirt of gas, its falling on its face until everything catches up. That's exactly how the truck is acting.