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Everything posted by Heckeng
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Dave, you'll have to let us know what the ATI does and how it's design is similar or different from your current one.
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I don't have any vac advance ability actually. I have richened it up to stock specs when I did the head change because my buddy with the LM-1 has moved to Kansas City and I wanted to be safe. It still ran hot though. I would like to get an A/F meter on it though, just to be safe.
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Hey all, since adding the new heads, I had been tinkering with the idea of making some new bushings to adjust the amount of mechanical advance that the MSD distributor would add in. I had been running 16 initial, and 37 fully advanced for several years. I also have a 3000 stall which is when all of my advance is "in" too, so I figured if the engine isn't loaded, why not advance it a little more? Anyway, I am now running 20 degrees initial, and 37 fully advanced and I am shocked to see the results. The throttle response is improved (less sluggish) and my engine temp is WAY cooler and steady. The engine would get hot in traffic (210-215) with the 16 initial, but with the 20 initial, I am running between 180 and 185 in 100 degree heat. It is seriously shocking as this is the lowest it has ever run idling around. I may try 22 and 36 next to see if the throttle response continues to get more crisp. I just thought I would pass this on in case anybody else was having "hot running" issues this summer. It might be worth a try if your engine will allow for some more initial timing.
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Those 6 cylinder converters stall nicely behind lots of torque, but you might ask him about adding an anti-ballooning plate to it to keep your torque from shredding it. Most companies like B$M, TCI, Dacco, etc will reuse the GM converters but with making modifications to the insides like changing the blade angles and adding better components where necessary, so the stock stuff is a good start.
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x3 You get what you pay for, and for an engine at that power level, I would not cheap out. Think about how expensive it would be if you bought a cheaper converter and it blew up and trashed your tranny. You are now buying a new converter AND rebuilding or replacing a transmission. You can get a good converter for $500-$700 from what I have found. I have a "tight" ATI converter. I asked for that, and that is exactly what they delivered. Like Dave said, you wouldn't really tell it had a higher stall unless you get into the throttle. Coana and ATI seem to be the names I hear the most about going behind strong engines.
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I just installed solid mounts, and I am very happy with how little vibration there is. And, they were tons easier to install than the stock style because it is easier to get to the lower bolts.
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Cool. I hate to say this Dave, but your color combo is really growing on me. I think the light green, with the black top, and silver wheels is really nice. Your car is now ranking with Mark's (Wallaby) blue as my favorite!
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Sounds good Dave. I can't wait to see what she runs now!
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Nice job. I guess the SBC air gap is more aimed for the standard 350? The larger intake helped quite a bit!
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I love the sound of popcorn in a garage! Nice mike!
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Did you stay 3/8" or are yours some of the gargantuan 7/16" or 1/2"? Just curious. I stayed with 3/8 but my cam is pretty wussy. I have also heard good things about Smith Bros. Post a pic if you get a chance!
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Lower Radiator Hose with Aftermarket Radiator
Heckeng replied to quarterbooty's topic in Engine Tech
Does your radiator have a lower outlet that points 90 degrees to the tank, or does it point ~25 degrees upward? Mine is a Griffen and points up which is retarded. That hose would look much better than my universal flex hose though. -
Holley Throttle Blades at Summit Maybe try one of these?
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New 750--Click Here How is your off idle throttle response Sam? I would guess it might have a stumble if you aren't into the idle transfer slots. Maybe check some swap meets for a decent used 750 or 950?
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Good call there Steve, 2/3 of the gas was 1+ years old, and 1/3 was new. That may help once that old stuff gets used up too.
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Dave, so far, it's a mixed bag of feelings. With the hesitation, it really puts a damper on throttle response. The new cam I put in fixed it I think. I took it out again last night for a bit. It was cold so my trans temp never got very warm and the car is always a little sluggish until it gets up to around 150 degrees or so but I still have a little carb tuning to do which is obvious to me. That is the negative. On the POSITIVE side, I got on it in second gear in several spots, and just while driving in second gear and nailing it, it was lighting up the tires which I don't remember it doing before. It also felt a little like the carb may still be getting cleaned out some. I had the bowls off but wonder if there wasn't a little fuel that may have turned to varnish or sludge in the main body passages. I think that will get better with time and driving. I'm not getting any more strange smells either which makes me happy! Not worrying about burning things or oil leaks!
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I'm going to try and borrow my friend's wideband unit and get the carb re-dialed in. I just drove it with a new accelerator pump cam and that helped quite a bit but it still needs some fine tuning. Not sure when the track will come but I would love to get some numbers with the new heads.
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Last night I took the Monte to our car club meeting--the first time the car has been out of the garage in almost 1.5 years. I was very nervous about getting it out, I think just because it has been so long. Id seemed to do alright, no noises, and just a little bit of smell. I am guessing that I was burning off all of the seeped oil and cobwebs from the exhaust etc. I have a little bit of carb tuning to do as it has a little hesitation off idle but seems good otherwise. I didn't open up the secondaries yet as I need to have somebody help me check the throttle cable adjustment. I'll do that this week and change out accelerator pump cams and see if that helps the hesitation.
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Impressive as always Dave! I'm with Bill though, I'm waiting for that 9.xx!
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Here it is, the all elusive LS-6 Monte! Wouldn't it be cool if you had a Big Block in there?
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Thanh, that ought to be awesome. I can't imagine going that fast, much less on the motor! We ought to have a cool spring season if people are able to hit the tracks and put up some times! There are a lot of motors going together all over the nation and going into Montes!
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NGK R5671A-7, these are the "V" power ones. I doubt I get much extra power from them however!
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Here you go guys, I took a quick video when I got in from work. The volume of the video wasn't really representative of what it was like in the garage for some reason. I just got the engine timed, carb roughly adjusted, and plug wires made up late last night. I warmed it up for a bit before I did the video today too so I wasn't revving a cold engine. I tried to show the pulses coming out of the exhaust, they are very strong, I believe stronger than they used to be, I would guess due to the increased compression. I found out my idling problem--forgot to attach the brake booster vacuum line, and I had a spark plug wire not firing. Got those fixed and it is much better now. I have one small antifreeze leak between the intake and water pump to fix but I think that is it knock on wood! Now I just need it to rain a lot to wash all of the chemicals and salt off of the roads.