Updated Valve event / DCR / SCR / Header length spreadsheet
Thread Starter
6600 rpm clutch dump of death Administrator
Joined: Dec 2001
Posts: 4,983
Likes: 13
From: Texas
Updated Valve event / DCR / SCR / Header length spreadsheet I have fixed a nagging error in the VE/DCR calculator that I needed to look at for a long time. I needed to convert angle to radians for excel to calculate properly. I had accidentally pointed a cell at the rod length instead of stroke, and I was missing a bracket that was causing a square root to be taken early (threw off the order of operation). So, anyhow, the sheet is broken up into several sections.
http://users3.ev1.net/~black_ops/cam...calculator.xls
This is my quick and dirty VE calculator sheet with a few add ons:
Sheet 1 - compare two cams (forum post) this was an attempt to put _ in there to keep the spacing right on when posting specs on the forum. I have found a better way now is to use a fixed width font like courier which does the same thing without all the ___. This sheet compares two cams side by side so you can see how they stack up.
Sheet 2 - Compare 4 cams. No underscores in this one. It simply compares 4 cams instead of 2.
Sheet 3 - VE's. Shows where 93 pony was putting a lot of his cams compared to other folks. This was realy there as a reference for me when looking over some cams.
Sheet 4 - Single Cam. Valve Events for one cam.
Sheet 5 - Compare two cams. Compare the valve events, etc... for two cams.
Sheet 6 - Quick and Dirty Cam/SCR/DCR Calculator Spreadsheet. This sheet takes all the cam math and combines it with a bunch of other engine math like DCR and SCR, along with header length math to help you in optimizing your combo, or to give you the details on your combo.
Sheet 7 - Compare DCR. This allows you to compare two motor combos to look at Valve events, dynamic compression ratio, and header length and see where you want to be, or what you're going to end up at with a change...
I'll add sections as they warrant. Anything folks want added, or math they have / want to see.
http://users3.ev1.net/~black_ops/cam...calculator.xls
This is my quick and dirty VE calculator sheet with a few add ons:
Sheet 1 - compare two cams (forum post) this was an attempt to put _ in there to keep the spacing right on when posting specs on the forum. I have found a better way now is to use a fixed width font like courier which does the same thing without all the ___. This sheet compares two cams side by side so you can see how they stack up.
Sheet 2 - Compare 4 cams. No underscores in this one. It simply compares 4 cams instead of 2.
Sheet 3 - VE's. Shows where 93 pony was putting a lot of his cams compared to other folks. This was realy there as a reference for me when looking over some cams.
Sheet 4 - Single Cam. Valve Events for one cam.
Sheet 5 - Compare two cams. Compare the valve events, etc... for two cams.
Sheet 6 - Quick and Dirty Cam/SCR/DCR Calculator Spreadsheet. This sheet takes all the cam math and combines it with a bunch of other engine math like DCR and SCR, along with header length math to help you in optimizing your combo, or to give you the details on your combo.
Sheet 7 - Compare DCR. This allows you to compare two motor combos to look at Valve events, dynamic compression ratio, and header length and see where you want to be, or what you're going to end up at with a change...
I'll add sections as they warrant. Anything folks want added, or math they have / want to see.
I dig this stuff. Very interesting. Neat ways you can manipulate various cam grinds to give you the same desired intake closing points and overlap. It's just a matter of moving things around. I will bookmark this so I can use it to better choose my next cam.
Thanks. Good homework.
Thanks. Good homework.
__________________
2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.
2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.
Thread Starter
6600 rpm clutch dump of death Administrator
Joined: Dec 2001
Posts: 4,983
Likes: 13
From: Texas
Originally Posted by Reckless
Why does it keep asking for a user name and password? I tried to save it but could not 
I don't know. I just tried D/l ing and it worked fine. I can mail it to you if you can't download it.
