Firing order question Chebby 350

[1fast4]

http://www.hotrod.com/techfaq/113_0701_lunati_cams/viewall.html

I think I found the answer. And apparently my flashlight wast very good on my previous firing order post.
See link for my situation.

[Nash B.]

So what is the actual firing order? Because there's no way the one you posted works.

[shumpertdavid]

I remember reading info about a cam swap that changed the typical chevy firing order, I considered adding something about it in my first post, but it'd been so long since I'd seen anything on them I figured I'd leave it be.

[1fast4]

So what is the actual firing order? Because there's no way the one you posted works.

Ok, so I am making this really hard apparently. Ok, so here is how it is wired to run:
1-8-7-3-6-5-4-2

[Jimbo]

I remember reading info about a cam swap that changed the typical chevy firing order, I considered adding something about it in my first post, but it'd been so long since I'd seen anything on them I figured I'd leave it be.

This, I have heard of some 4/7 swap cams. Is that a possibility?

[Nash B.]

Ok, so I am making this really hard apparently. Ok, so here is how it is wired to run:
1-8-7-3-6-5-4-2

Ya, it must be a 4/7 swap cam then.

[1fast4]

Other than a loudish crappy exhaust, the truck really doesn't seem even quick let alone fast. Why would someone put that cam in and leave stock iron heads on is beside me?

I learn more and more about this old truck every day!

[Z06killinsbf]

Why would someone put that cam in and leave stock iron heads on is beside me!

Rednecks. It happens all the time.

[1fast4]

Gotta love em. Now here is a question before I try it. What if they "thought" they knew what they were doing cause they read it on the Internet and just swapped wires with out swapping cams. Would it still run or no with 2 cylinders being off?

Just wondering if I should bother trying to swap wires And see what happens. This is a semi daily driver for me right now so I can't really afford to jack it up.

Thanks again for any and all help and insight any one has!!!

[Snatch Napkin]

It will run, but you should expect backfiring through the carb or popping in the exhaust. Acceleration will feel choppy.


The swap was done after someone noticed how the pulses of the air/fuel mixture travels in the runners of the intake. Do you know what heads are on the motor? Chevy made a few decent sets of iron heads.

[1fast4]

It will run, but you should expect backfiring through the carb or popping in the exhaust. Acceleration will feel choppy.


The swap was done after someone noticed how the pulses of the air/fuel mixture travels in the runners of the intake. Do you know what heads are on the motor? Chevy made a few decent sets of iron heads.

No idea on the heads? And until this BS weather stops, I won't have any time to tinker with it. It does run, idle, and drive fine right now. Just more things to check and look at. DefinTely a learning experience on this truck FOR SURE!!!

Come on sun and a day off!!!

[crapstang]

Foxtrot FTW