Valve Events opinions
01-30-2006, 02:04 PM
#1
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Valve Events opinions I'm going to have a custom grinder grind my cam cause i'm no expert... But.....
Just for "discussion/hypothetical/what if/learning/*****&giggles" purposes.
Road Racing application TRACK ONLY Never ever on the street
3500-6900
347CI
11.5:1 compr,
Heads intake 260(.400)==>315(.600) , exhaust 75%-80%
1 3/4 longtubes(HVMC)
90mm ported fast intake & Tb .
just pluging in numbers on the jrod VE calc from various grinds out there and came up with this:
DCR is 8.6
Should i keep my day job 
feedback on camshaft VE's only please.
Just for "discussion/hypothetical/what if/learning/*****&giggles" purposes.
Road Racing application TRACK ONLY Never ever on the street
3500-6900
347CI
11.5:1 compr,
Heads intake 260(.400)==>315(.600) , exhaust 75%-80%
1 3/4 longtubes(HVMC)
90mm ported fast intake & Tb .
just pluging in numbers on the jrod VE calc from various grinds out there and came up with this:
DCR is 8.6
Should i keep my day job
feedback on camshaft VE's only please.
01-30-2006, 03:02 PM
#2
Cam looks good, although I think the IVC is too early to take advantage of the heads you're talking about running. You'll do better with an IVC of 46 degrees ABDC because it will put your power peak closer to 6300 and it will put your overlap directly over TDC. Currently, your cam is exhaust biased meaning it will be torquey, but it will run out of steam pretty quick. Put the cam in at 108ICL and you should be good to go.
__________________
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.
01-30-2006, 03:27 PM
#4
TECH Senior Member
I would grind it on a 110+0
Then using a QTP 2 piece timing cover with a Crane adjustable timing chain.
Then do live testing and advance/retard for best application.
Then using a QTP 2 piece timing cover with a Crane adjustable timing chain.
Then do live testing and advance/retard for best application.
01-30-2006, 03:37 PM
#5
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Originally Posted by PREDATOR-Z
I would grind it on a 110+0
Then using a QTP 2 piece timing cover with a Crane adjustable timing chain.
Then do live testing and advance/retard for best application.
Then using a QTP 2 piece timing cover with a Crane adjustable timing chain.
Then do live testing and advance/retard for best application.
I do belive it would have to be a Comp Timing chain, QTP does not support double rollers like the crane.
Last edited by TAF Motorsports; 01-30-2006 at 03:57 PM.