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07-26-2017, 11:22 PM | #101 |
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Re: '67 El Camino H/SA
If your SBC likes 50 degrees of timing, it will be the first one .....are you sure TDC is correct ?......
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07-27-2017, 12:35 AM | #102 |
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Re: '67 El Camino H/SA
Yeah, TDC is correct. Those racers I mentioned earlier run Stockers .900 under and quicker...they showed me the graphs of the runs, the switches in the shifter and the qualifying sheets tell no lies.
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Rich Taylor I/SA - 321 |
07-27-2017, 09:12 AM | #103 |
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Re: '67 El Camino H/SA
No harm in trying it, if it doesn't like it what are you out one pass, and isn't trying things the name of the game in stock and superstock. I always thought that was the key to speed buy it, try it, and put it on the shelf
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07-30-2017, 04:58 PM | #104 |
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Re: '67 El Camino H/SA
Results are on hold for a bit...lost first gear in the metric right at the hit on it's first pass yesterday.
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Rich Taylor I/SA - 321 |
09-10-2017, 01:07 PM | #105 |
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Re: '67 El Camino H/SA
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.
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Rich Taylor I/SA - 321 |
09-18-2017, 03:48 PM | #106 |
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Re: '67 El Camino H/SA
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...
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Rich Taylor I/SA - 321 Last edited by HandOverFist; 09-18-2017 at 09:18 PM. |
10-23-2017, 02:35 PM | #107 |
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Re: '67 El Camino H/SA
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...
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Rich Taylor I/SA - 321 |
10-23-2017, 04:26 PM | #108 |
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Re: '67 El Camino H/SA
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.
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1969 camaro, pump gas 540"bbc, jerico 1967 camaro, pump gas efi 620", coan t-400 |
10-23-2017, 04:52 PM | #109 |
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Re: '67 El Camino H/SA
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.
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Dave Noll, E/FS ,L/SA 6526 |
10-23-2017, 07:24 PM | #110 |
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Re: '67 El Camino H/SA
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? |
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