427 equivalent of 224/228/114?
09-12-2007, 06:49 AM
#1
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427 equivalent of 224/228/114? Assume you wanted the exact same idle and powerband characteristics that a 224/228/114 gives on a 346, but for use on a 427. What would you run?
09-12-2007, 07:05 AM
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someone like patrick g or pred would be the ones that know more than most of us on here but just on a guess i'd say something around 12-14 * bigger should be pretty similar so i'd say a 236/240 or a 238/242 or so.
09-12-2007, 08:26 AM
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i will not take a shot at your question-but
if your using ls7 style heads and not ls1/6 heads
note that the flow characteristics are different.
the ls7 heads require a larger split (more exhaust duration) between intake and exhaust
if your using ls7 style heads and not ls1/6 heads
note that the flow characteristics are different.
the ls7 heads require a larger split (more exhaust duration) between intake and exhaust
09-13-2007, 07:15 PM
#5
Originally Posted by jermzz
I read somewhere is was 7 - 8 degrees per 50ci. I dont completely remember though.
I think whatever the math it has to effect base circle as well. Well at least at some point as you go up on ci.
Of course I have no idea, so I'm just throwin that out there.
09-13-2007, 08:13 PM
#6
13-15 degrees bigger will get you there, but remember, the LSA will depend on the heads you run. Small valves and ports will favor a cam with more overlap and will respond with a narrower LSA. Higher compression will favor a wider LSA. Longer stroke will favor a wider LSA, but it's trumped by the cylinder head so choose accordingly.
__________________
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.
09-14-2007, 06:56 PM
#7
Originally Posted by Patrick G
the LSA will depend on the heads you run. Small valves and ports will favor a cam with more overlap and will respond with a narrower LSA.
