J johnsplowing207 New Member Mar 1, 2010 99 0 0 sanford maine Mar 8, 2010 #1 Mar 8, 2010 #1 what CC's are gt40 heads off a 95-96 explorer?and what is the valve size?
Cobra1741 Member Mar 9, 2010 152 1 16 Mar 10, 2010 #2 Mar 10, 2010 #2 59cc.... int. 1.84 exh. 1.46. i think...
SpartaPerformance 10 Year Member Nov 5, 2006 2,517 61 89 Long Island NY Mar 10, 2010 #3 Mar 10, 2010 #3 58cc I'm not sure if those are gt-40 or gt-40P. gt-40 is 1.86/1.54 the gt-40P is 1.86/1.46
Cobra1741 Member Mar 9, 2010 152 1 16 Mar 11, 2010 #4 Mar 11, 2010 #4 SpartaPerformance said: 58cc I'm not sure if those are gt-40 or gt-40P. gt-40 is 1.86/1.54 the gt-40P is 1.86/1.46 Click to expand... ya i was assuming gt40p... either one is fine.... close to the same cc. valves different but the gt40p are capable of more flow i think...
SpartaPerformance said: 58cc I'm not sure if those are gt-40 or gt-40P. gt-40 is 1.86/1.54 the gt-40P is 1.86/1.46 Click to expand... ya i was assuming gt40p... either one is fine.... close to the same cc. valves different but the gt40p are capable of more flow i think...
clement Founding Member Feb 27, 2001 1,106 52 59 Oak Cliff Mar 11, 2010 #5 Mar 11, 2010 #5 i think actual iron gt40s had bigger chambers than gt40p's. my iron gt40s were 64cc chambers and 160cc intake volume.
i think actual iron gt40s had bigger chambers than gt40p's. my iron gt40s were 64cc chambers and 160cc intake volume.
Cobra1741 Member Mar 9, 2010 152 1 16 Mar 11, 2010 #6 Mar 11, 2010 #6 clement said: i think actual iron gt40s had bigger chambers than gt40p's. my iron gt40s were 64cc chambers and 160cc intake volume. Click to expand... ya there either 64cc or 62 cc for originals. the gt40p had smaller valves and 58 or 59 cc.
clement said: i think actual iron gt40s had bigger chambers than gt40p's. my iron gt40s were 64cc chambers and 160cc intake volume. Click to expand... ya there either 64cc or 62 cc for originals. the gt40p had smaller valves and 58 or 59 cc.
Mustang5L5 That is…until I whipped out my Bissell Mod Dude Feb 18, 2001 41,818 17,421 224 Massachusetts Mar 11, 2010 #7 Mar 11, 2010 #7 62.5-64.5 for the Explorer GT-40's 60-61cc for the P's Neither head has Thermactor ports FYI