Cam opinions
01-29-2008, 04:21 PM
#1
Staging Lane
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Cam opinions First off I have had this cam in my 02 T/A,for a while,its a full bolt on cam only car.. I'm interested to see what you guys think of this cam..
It pulls really good in higher rpms,but not so much low to mid range,are these the results I should be getting from this cam?
If so would gears help me out,any?
Here are the specs..
Specs are 235/239-600/580-113, 4 degrees of advance ground in. Custom ground by Jones Cam Designs. Cam card says:
Jones Cam # HR73353-74341
Rocker Ratio 1.7
Base Circle 1.450"
L/C 113*
Intake C/L 109*
.050" Check @ Lifter
Intake opens 8.5* BTDC
Intake closes 46.5* ABC
Exhaust opens 56.5* BBC
Exhaust closes 2.5* ATDC
Duration @ seat: Intake 292, exhaust 298
Duration @ .050": Intake 235, exhaust 239
Gross camlift: Intake .353", exhaust .341"
Hot valve clearance: Intake .000", exhaust .000"
Net Lift: Intake .600", exhaust .580
It pulls really good in higher rpms,but not so much low to mid range,are these the results I should be getting from this cam?
If so would gears help me out,any?
Here are the specs..
Specs are 235/239-600/580-113, 4 degrees of advance ground in. Custom ground by Jones Cam Designs. Cam card says:
Jones Cam # HR73353-74341
Rocker Ratio 1.7
Base Circle 1.450"
L/C 113*
Intake C/L 109*
.050" Check @ Lifter
Intake opens 8.5* BTDC
Intake closes 46.5* ABC
Exhaust opens 56.5* BBC
Exhaust closes 2.5* ATDC
Duration @ seat: Intake 292, exhaust 298
Duration @ .050": Intake 235, exhaust 239
Gross camlift: Intake .353", exhaust .341"
Hot valve clearance: Intake .000", exhaust .000"
Net Lift: Intake .600", exhaust .580
01-30-2008, 02:59 PM
#7
The cam is light on the low end because the intake valve closing point is a little late for good dynamic compression and the exhaust valve opening point is a little too early, which bleeds off cylinder pressure early on the power stroke. This is not a bad thing at higher rpm, but it hurts power under the curve.
A cam with more power under the curve would typically have less duration, a narrower LSA, but around the same overlap.
A cam with more power under the curve would typically have less duration, a narrower LSA, but around the same overlap.
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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.
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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02-01-2008, 08:42 PM
#9
Staging Lane
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The cam is light on the low end because the intake valve closing point is a little late for good dynamic compression and the exhaust valve opening point is a little too early, which bleeds off cylinder pressure early on the power stroke. This is not a bad thing at higher rpm, but it hurts power under the curve.
A cam with more power under the curve would typically have less duration, a narrower LSA, but around the same overlap.
A cam with more power under the curve would typically have less duration, a narrower LSA, but around the same overlap.
