'67 El Camino H/SA

[HandOverFist]

The metric is still in the shop, but I have a new Coan LW TH350 along with a matching converter in the car now. I figured with the added low gear set I would'nt lose too much vs the metric. I'm looking for it to be a more durable unit in the long run.

Concerning the timing experiment - While the new parts may negate an accurate comparison for now, I cannot discern much difference in performance between the two transmissions/converters. Took it to a local bracket race last night and had a limited amount of time to experiment (did make it to round 5 tho). It is still hitting like a hammer at launch with wheels in the air...the reduction in 60' times nearly a tenth just as it showed with the metric combo.

I'm pretty well convinced the results are due to the timing alterations. Next outing I will try some subtle changes such as pulling the timing back sooner.

[HandOverFist]

Sneaking up on it...a 1.50 60' on this pass. I need to figure out how to adjust the H&R bar to level it out. Also the carb I built is super rich down track...did'nt even lean out beyond 12.2 afr.



Another secret weapon...

[HandOverFist]

I have a question not related really to this thread, but don't know where the appropriate section would be.

Ordered a Sundowner enclosed gooseneck trailer over three months ago from Trailer World in Bowling Green KY. Half the purchase price was paid upfront. I was under the impression that it would arrive in two months time...a phone call after that period got no definite answer. Another phone call was made after three months had elapsed just to get some kind of estimate of a delivery date...fellow told me he was busy unloading trailers and he would check on it, but never got back to me.

Is this a normal waiting period for a new trailer and normal customer relations? Fast approaching four months now and don't want to be a dick, but...

[bigsixman]

Rich, It took 8 weeks to receive my enclosed after I ordered it in 2010. I am aware that some in my area are waiting 10-12 weeks this year.

[Dave Noll]

Can't offer anything about the trailer. I still use a 36-year-old, homebuilt, open, single axle car trailer. (No I'm not adding another axle.)

For the naysayers, I have had similar results with a lot of ignition timing. Yes, I've checked TDC, a few times, with different balancers. On mine, it helped down track as well, though.

[goinbroke2]

If everything is correct (balancer/marker/etc) I'm wondering if being a stocker cam on a less than ideal shortblock is producing low cyl pressure and the timing advanced that far is making up for it? As the rpm goes up, the better the cam breathes (less overlap losses of cyl pressure) and it gradually gets back to what is considered normal at 36*?

I'm thinking a tight ring package and decked block so the quench area is ideal and higher static compression would produce more cyl pressure and require less advance on the bottom?

What is the cranking pressure?

[HandOverFist]

Originally Posted by goinbroke2

If everything is correct (balancer/marker/etc) I'm wondering if being a stocker cam on a less than ideal shortblock is producing low cyl pressure and the timing advanced that far is making up for it? As the rpm goes up, the better the cam breathes (less overlap losses of cyl pressure) and it gradually gets back to what is considered normal at 36*?

I'm thinking a tight ring package and decked block so the quench area is ideal and higher static compression would produce more cyl pressure and require less advance on the bottom?

What is the cranking pressure?

Don't have those figures atm, but the same set-up is about to be tested on a fresh F/SA Corvette...that will answer some questions for sure. He will be using a maximum of 44 degrees on his runs.

[HandOverFist]

I can take the delay even though it was estimated at 2 months. What really bugs me is the lack of concern/communication after the deal. I'm not one to make constant phone calls/inquiries...just would like some idea/time frame so plans can be made at least on my end. Already missed several races and I wanted some info so I could arrange time to have the truck painted. I finally said screw it and took the truck apart and carted it off to the paint shop. If they call anytime soon now about the trailer I could not pick it up as it is the only one with a gooseneck hitch that I own.

Probably not any concern to them, but a couple of friends who were interested in buying a trailer have taken notes of my experience thus far.

[chris ok]

Originally Posted by HandOverFist

Sneaking up on it...a 1.50 60' on this pass. I need to figure out how to adjust the H&R bar to level it out. Also the carb I built is super rich down track...did'nt even lean out beyond 12.2 afr.



Another secret weapon...

You need to add some preload to right rear bar end.
I have same set up.
I make adjustment with my weight in deicers seat aka friend and some stuff in drivers seat and adjust to 0 preload.
That gets it in ballpark and expand or contract right side as needed.

[HandOverFist]

Originally Posted by chris ok

You need to add some preload to right rear bar end.
I have same set up.
I make adjustment with my weight in deicers seat aka friend and some stuff in drivers seat and adjust to 0 preload.
That gets it in ballpark and expand or contract right side as needed.

I did just that the other day while in the shop. I have yet to get back to the track to test it further...calling for rain and temps in the upper 40's for this weekend. It's about time for an engine swap and I may just retire it for the winter to concentrate on getting it ready for next spring.