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Got it thank you so much. Sorry for using wrong terms to explain this. Like I said I can see it in my head but putting it to paper as it were is a bit harder for me.

So I can open my can all the way to the 15* it allows, as my rpms dont go high enough for the timing to be all in. My O/D and L/U make sure of that. My timing comes all in at 2200 rpm. But my cruising rpms are at 1600. I dont race this truck so I really never see 2200 rpms unless passing when I...

No I'm not talking about the mechanical advance springs, my timing is set at 22* initial and 36* all in. I'm talking about the can setting. The screw and spring inside. I was wondering if by changing that spring I could slow the rate at which the can comes in... but I dont think I can access it...

Got it, that's what I was asking.

My timing itself is set. I'm working on how much timing I can pull from my can, but was wondering if because its ported, does that mean that the vacuum signal the can receives is variable... does vacuum movement control how much advance is added. The more the blades open the more pull the can...

So I'm gonna slowly turn up my can, test and adjust until it pings at cruise. Then I will back off 2* and test... if it still sounds a little pingy I'll back off another 2* on the can and test. That should give me my full timing range. And I'll put in the medium spring (running 1 light 1 medium...

Yeah I see that.

So, hypothetically I could hit 45* maybe even 50* at cruise because of this curve and this isnt something to be to concerned about as the spark should hit sooner so that combustion burns at the right time.

This is what I thought, so a stiffer spring should act as the curve creator forcing the timing to not advance all at once. Allowing a person to set initial timing, then once accelerating more timing comes on as the motor advances in rpms and the throttle blades open up more, allowing more vacuum...

My initial and total timing are set. What I'm asking is when ported does the carb act like a computer, basically only allowing as much timing needed at on time. Since the vacuum only comes in after acceleration, does this change affect how much timing is pulled? So if you open the can wide open...

I know I can control when the timing comes completely in by putting a slightly heavier spring in. I wondering if by doing this I can slow the timing from just coming in all at once so the timing hits more of a curve... if that makes sense.

Okay, so first off I want to start this by saying I'm not asking to start an argument about which is better "ported" or "manifold". So let's not do that seen to many. My question: when ported does the motor only use the amount of advance needed? As in when the motor is pulling say 1800 rpm...

Yes

I see, I will do some more research, thank for the heads up on that.

Yes I understand that it is adjustable, I believe the one I have runs from 6* to 15*, but even at 6* and putting the distributor back to 16* I'm still back at 22* with the can. Anything higher than 22* and my vacuum signal gets super erratic. So I have to ask, can the vacuum stay consistent with...

I've thought of that, but at this point I feel that pushing an 8,500 lbs truck down the road isnt really gonna see much gain with the can. I could be wrong though... wouldn't be my first time :)

No the rattling went away, I believe it was caused by the advance. Too much on the all in, if I remember correctly it was somewhere around 42*. Once I realized that my distributor had a recurve plate installed, I simply limited my mechanical advance to 14* and moved my initial to 22*. That gave...

Okay, so after some research and a bit of reducating myself on timing, I believe i have found my truck happy spot. Currently it seems to run best at 22* initial and 36* all in. Did some research on my distributor to find out I can adjust it without a recurve kit. Lossen a couple of screws and I...

Okay, so TV cable moved back a little : started hard shifting, also shifting way to high a RPM. Moved it back. Added alittle to the idle screw : starts much better. But still cant find any top end power. Gonna leave it where it's at. Could I possibly be giving it too much fuel? Would this...

I'm going to try adjusting the mix a little. I got rid of the hesitation, it's a bit sluggish on the top end, I know this cam says it makes power from 1000rpm to 5000rpm but I dont get anywhere near 5000rpm. Getting it to 2500 rpm is a challenge... but maybe not a problem as I'm doing 70mph at...

I guess I just figured that if this is the biggest I can go on this carb, then a slightly larger carb would allow me more "play" as it were. Truck stills a bit sluggish, but I think that may have more to do with how I have the TV cable set... there is still a good 1/4 inch of "play" / run when...

My truck is running, just wanted to post a well deserved thank you. If I could hand yall a beer I would hand you a 12 pack. You guys are great and I know at times things are frustrating, but yall got me across the finish line and for that I am completely grateful. Thanks again yall. Have a...

So I guess I can call it fixed: Tried every jet and rod combo that edelbrock suggests for the 1406... non worked. Decided to try the .101 jet and my smallest rod .037 and viola! Conclusion: I need a bigger carb... this little guy just isnt doing it. I'm assuming this is as big as this carb can...

If I run the largest jet I have .101 and the smallest rods I have .037 that would give me the most fuel I can consume with this carburetor. Not sure this is a good idea... but worth a try.

Yes it's me, my spark plugs are a light tan

My apologies, I'll make sure next time to include relevant info, or try to anyways

Just stopped by a tuner shop in town, told me that I'm running way to lean and that my initial is way to low for an engine that is running 350+ hp. But they also want me to spend 350 bucks for them to run diagnostics and possibly more depending on what needs to be fixed

LA360 bored .030 KB hyperueretic pistons Comp cam XE256H w/ springs , hydraulic lifters, 308 swirlport heads ported and polished Melling valves 2.02 int 1.96 ext Edelbrock air gap intake Edelbrock 1406 carburetor Hooker headers w/ independent exhaust MSD coil Summit racing HEI capped distributor...

So the motor is still hesitating off idle. My timing is 14* idling at 600rpm. When I put it in gear idle drops just 100 rpm. I have no vacuum leaks, i pulled all vacuum assisted instruments off the intake tee. Checked the brake booster it's working well, and is brand new. If I let off the main...

This is an LA 360... does it run the same vacuum as an 318? And I will start plugging things up, just as soon as the wife gets home. My kids are here now and if I take my eyes off them for 1 second I'll be fixing something else lol