235+ duration/.600" lift cam people!!!!
12-02-2005, 09:48 AM
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235+ duration/.600" lift cam people!!!! i have a TSP cam 235/240 .603/.600 cam. anybody who has a similar cam or slightly bigger, did you have to fly cut your pistons when you put on a set of heads that were milled thirty thousandths? any help would be appreciated
doug
doug
12-02-2005, 12:53 PM
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LPE2-3 cam with 1.85 rockers = .630 lift
with milled heads and did not need flycut,
but l have to caution you, the ONLY way to know for sure is to mock it up and measure VERY carefully. Sometimes the short duration cams will clear, but the long duration cams often do not.
Getting an answer online is NOT the way to find out.
with milled heads and did not need flycut,
but l have to caution you, the ONLY way to know for sure is to mock it up and measure VERY carefully. Sometimes the short duration cams will clear, but the long duration cams often do not.
Getting an answer online is NOT the way to find out.
12-02-2005, 02:58 PM
#6
Your thread question is worded improperly. Lift is not what causes piston to valve clearance issues, it's duration. Think about it: Maximum valve lift occurs when the piston is pretty close to the bottom of the cylinder bore...close contact occures as the piston approaches or departs TDC. Duration is what bites you in the bottom.
Maybe you should pose the question: 235+ duration cam people!!!!
Would you like me to change your thread title?
Maybe you should pose the question: 235+ duration cam people!!!!
Would you like me to change your thread title?
__________________
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
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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.
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12-02-2005, 10:26 PM
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Originally Posted by Patrick G
Your thread question is worded improperly. Lift is not what causes piston to valve clearance issues, it's duration. Think about it: Maximum valve lift occurs when the piston is pretty close to the bottom of the cylinder bore...close contact occures as the piston approaches or departs TDC. Duration is what bites you in the bottom.
Maybe you should pose the question: 235+ duration cam people!!!!
Would you like me to change your thread title?
Maybe you should pose the question: 235+ duration cam people!!!!
Would you like me to change your thread title?
12-04-2005, 01:08 PM
#11
Originally Posted by 1bigdaddy
g5x3 here too....with 59cc afr's ....we flycut them .80 on the intake side only....its not hard to do and i would rather be safe than sorry.
Are you sure you flycut .80" off your pistons?! Do you have stock pistons, and if so, what is the furthest distance you can flycut on them?
Haans
