Katech value 427 w/L92 top end makes 604hp
06-09-2007, 01:25 PM
#24
TECH Resident
23x/27x on a 107, .630 lift.
I am amazed at the different strategies for big motor cams. There are some cams that have only a few more degrees of exhaust duration, there are some "torquers" that have small duration and big lift on the intake. This one in your motor has a huge spread between intake and exhaust. What is the theory of exhaust duration nearly 40 more than the intake. I'm not questioning your choice of parts, I just want to understand why it works, and is this the right approach for me?
06-09-2007, 03:51 PM
#26
TECH Fanatic
The cam needs to work with the flow characteristics of the heads. LS7/L92/L76 heads flow less on the exhaust as a ratio compared with the older cathedral port ls1/6/2 heads.
At least thats my understanding
At least thats my understanding
06-09-2007, 04:16 PM
#27
JASON-I don't know how to post a graph,but I'm looking at my old 346ci graph from Kirks dyno(463hp 414tq) and he stoped it about 6,900rpm's and it never fell off. So i was wondering why the larger CI motore seem to. I will be comming down to Kirks in a week or so,I will bring the graph with me to show you,or someone can tell me how to post it and i'll try.
06-09-2007, 04:20 PM
#28
Originally Posted by mike c.
JASON-I don't know how to post a graph,but I'm looking at my old 346ci graph from Kirks dyno(463hp 414tq) and he stoped it about 6,900rpm's and it never fell off. So i was wondering why the larger CI motore seem to. I will be comming down to Kirks in a week or so,I will bring the graph with me to show you,or someone can tell me how to post it and i'll try.
06-10-2007, 09:49 PM
#31
Originally Posted by Katech
I meant show me an engine dyno. We have built engines that start to fall off around 6400-6500 on the engine dyno, put them in the car, take them to Kirk's dyno and they don't fall off at all before we shut down at redline. You can't go by the chassis dyno.
No truer words have even been spoken!!!
06-12-2007, 08:48 AM
#32
Staging Lane
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Video? Also, where can I find more videos out there showing Katech engine/vehicle packages other than the awesome Street Attack Z06?
Even more of the Street Attack Z06 would be fine!
+1 for great job.
Even more of the Street Attack Z06 would be fine!
+1 for great job.
06-12-2007, 08:59 AM
#33
Originally Posted by BAD LUK
Video? Also, where can I find more videos out there showing Katech engine/vehicle packages other than the awesome Street Attack Z06?
Even more of the Street Attack Z06 would be fine!
+1 for great job.
Even more of the Street Attack Z06 would be fine!
+1 for great job.
08-07-2007, 03:44 PM
#36
Nice sounding chassis dyno run. What kind of numbers did it make? I'm guessing 551/502.
__________________
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
2018 Cadillac Escalade 6.2L A10 Pat G tuned.
LS1,LS2,LS3,LS7,LT1 Custom Camshaft Specialist For custom camshaft help press here.
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
2018 Cadillac Escalade 6.2L A10 Pat G tuned.
LS1,LS2,LS3,LS7,LT1 Custom Camshaft Specialist For custom camshaft help press here.
Custom LSX tuning in person or via email press here.
