BLM averages below 128 are rich. BLM averages above 128 are lean. The attached screen shot can be helpful understanding engine load vs. RPM vs. MAP. I would adjust VE table to get the BLM's closer to 128.
dave w
BLM averages below 128 are rich. BLM averages above 128 are lean. The attached screen shot can be helpful understanding engine load vs. RPM vs. MAP. I would adjust VE table to get the BLM's closer to 128.
dave w
Could you describe the port work done on the heads? How much bowl work was done? How much of the swirl ramp was removed? Was the chamber unshrouded to accommodate the larger valves?
Dave thats what i figured, just keep datalogging. Just wanted to make sure i wasnt missing something, still a fresh fish lol. Roadknee its nothin special. Its how the heads came so i dont know specifics because it was a junk yard engine. Looked like they were gasket matched and had the swirls worked out smoothe as far as i could see. They were definitely punched out for the valves too. Which all sucks cuz i wanted the sworls and 1.90 valves lol. Keep velocity and torque up.
My build is very similar to yours but I'm not as far along as you yet (still accumulating parts). 95 k2500, 4l80e, 4:10 gears, building a 355. Already have vortec heads and a roller cam with slightly less duration than yours. Have a 46 mm bored tb from tbiparts.com and have been considering 65lb injectors. If your gonna stick with the 80lb in yours and you would be interested in selling your 65lb, pm me, I may be interested. I will be following your build with interest!
Sorry truck guy, we picked up a 91 suburban so I'm gonna throw those injectors into it lol. Been messin with the truck some more, I bumped up the bpw from 106 to 109. I was cuting out at 4000-4500 still and those 3 points took care of it. I started comparing with the g-p trucks and 454ss settings. Pulled a lot from those, including transmission data and idle data. It runs amazing now. Still gotta do a lot more data tracing tho. WOT is perfect, its the town driving that needs work, still rich in the lower MAP. Using the g-p and ss bin files helped a lot with getting that 3/4hd workhorse to move haha. ill post the bins i used for all of my comparisons and what i've got currently, plus the log to show what I've changed.
$85-My bin I run
AWBM- The stock bin for my truck
BAJW-The commercial van/chassis truck bin
BAMY-454SS Silverado bin
BAAX- The bin Dave gave me to compare
Let me know if anyone has any suggestions or sees any problems!!Thanks folks.
RPM/MAP 20 25 30 35 40 45 50 60 70 80 90 100 0 105 105 105 105 105 105
105 105
400 128
120 105 110 111 119 128 115 115 110 800 126
128
124
109.038 105 116.45 118.45 126.407 129.333 128
126 120 1200 126 130 121.583 105 105.06 105 105.05 123.236 127.2 128 126 126 1600 126 135.2 122.611 123.531 124.778 111.9 105 107.82 132.471 126 126 126 2000 128 131.938 126 126
126 120 109.125 120.01 125 140 126 126 2400 128 128
128 128 128 128 115 125 129.615 140 128 128 2800 128 128
120
128
128 130 128 128 3200 128
128 130 128 3600 128 130 128 4000 130 130 128 4400 128
128 4800 128 128
Figured I'd post up my last data too to show how I got to my current VE. Am i putting in the extra data correctly (highlighted in red)? Never was to sure on that whole deal haha. Thanks.
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