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So I am at a point right now where I am using only machanical advance. Initial at 14 and total at 24. It’s all in by 2500 or so. If I advance it more I get some pinging. Does it make sense to put in stiffer springs and delay the advance till a higher rpm? Then I may be able to run more initial...

I will borrow another timing light to verify mine is ok. A question about reading plugs. Do they need to be cleaned off after you make an adjustment to give you a good read on your new setting? Or does their appearance just change right away after you two me the motor differently. These plugs...

Spark plug pics coming tomorrow. Damb I wish I could find my cylinder hear displacement measurements.

I just set timing for 14 initial 23 total, No vacuum advance at a And put in some stiffer springs ... I think I’m finally going in the right direction. It feels like it has more power when it starts to approach 4000. I tried advancing more but I got pinging again. It now feels more healthy with...

Cool. I just received my FBO advance limiter plate and I’ll be messing with that tomorrow.

I like it. I guess you are saying that the mixture is too lean and that can contribute to pinging?What is the best way to see what the carb is doing? Install an 02 sensor and gauge, or do I need dyno time ?

Results are in... Plugged the vacuum advance. Total at 3000 is 34 At 2000 is 28 At 1500 is 20 Idle at 800 rpm is 10 degrees Pinging it’s head off under power, even at 2000 rpm. Power feels pretty good until I have to let off because of the pinging. I’m using a regular timing light, not a...

Yes. There was a slight overlap when both valves were overlapping, so we eyeballed the middle point. It seemed dead on.

I will do it this afternoon.

Thanks. Yes TDC has been confirmed with a piston stop. And I realize my rocker watching method is not perfect, but I figured it is telling me that the cam is pretty darn close. And I didn’t have to tear anything apart yet. Really, the motor doesn’t run bad, I’m just trying to make it run great.

So I took off the drivers side valve cover and turned to motor over by hand. Had a friend watch the rockers and as I passed 360 degrees past tdc ( where the exhaust is just closing and the intake is just opening )I had him tell me where exactly the exhaust fully closed and the intake just...

Ok guys. I am loving all the help coming in, but I think I need to reiterate some things I know, and also things I don’t know, and why What I know. Short block is a la 360, bought directly from Mopar 17 years ago with flat top pistons and advertised to have around a 9.5 to 1 cr. Exact cam...

Mopar Performance distributor with vacuum advance and orange ignition box. Mechanical advance adds about 25 degrees right now, but I am putting in one I just checked because you mentioned cam timing. It looks to be correct.

Premium fuel. Auto trans. Rear end is not highway gears and not drag gears. Somewhere in between. Standard converter. It’s in a 67 Valiant. I’m trying to use vacuume advance.

Well I drilled the holes, and now it runs worse. What year is your green Valiant?

Are you suggesting locking in the mechanical advance and using no vacuume advance? I am receiving my advance limiter disk thing on Friday, so I will give it a try. I previously tried to limit the dist advance to only about 10 degrees (by jimmy rigging the heavy spring from extending) and using...

That’s what I’m going to look at next. I degree’d it when I put it in, but maybe I screwed up. I used to think my timing mark was off, but I verified it is pretty close by observing the #1 piston.

Shoot I can’t seem to locate my notebook right now, but I know I went over my math several times, 17 years ago, and again lately. Doesn’t mean that I didn’t screw it up of course. I will post them when I find them. Thanks.

I am about to try to double check the basic cam timing as well as I can without taking the front of the motor apart. Yes, premium gas only. The motor runs cool enough. Around 190 degrees. I checked the timing mark on my balancer and verified it is pretty darn close, if not dead on.

Hey now. So this is a short block that I purchased from the Mopar Performance catalog about 17 years ago. I think it was advertised as “9.5 to 1” compression ratio. I put a set of rebuilt 360 heads on it and yes, I took the time to measure the head volume and deck height and all, and...

Whoops. Apparently there is a learning curve to this forum business. Full disclosure. The bars are still in the car. I will try to add a photo of the end number. And another thing. What I really want is a set of stiffer bars ( around 1” ) for my 67” Valiant.

I bought these Mopar Performance Bars around 10 years ago, but they probably only have a few thousand miles on them. MP part number is P5249150. I am only replacing them because I am running my car very low, and have switched to a much stiffer spring. As I understand, these are more suited to a...