L92 Cam
#1
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L92 Cam
Would a 228LSK/240XER 114+2 be a good cam choice for a 408. Would be out of the box L92 (milled for DCR,SCR), unported L76/LS3 intake, 1 7/8 headers w/ full 3" dual exhaust w/ tru-x, and 90mm throttle-body. SD tune mafless.
Depending on how the short block comes out, I will be running around 11.5 scr, 8.6 to 8.8 dcr.
Would this setup work with the picky L92 top end?
Thanks
Depending on how the short block comes out, I will be running around 11.5 scr, 8.6 to 8.8 dcr.
Would this setup work with the picky L92 top end?
Thanks
#2
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Thats a very similar set up to mine. Is that cam specfic for the 92 heads or not? My cam has a little more duration and its +3. The exhaust, intake and t-body are the same that I am running. I went with a 85mm MAF meter its alittle more forgiving on the street and for different weather conditions. Buy the best springs that you can afford. I went with the rebuilt stock 92 rocker arms. The car really pulls hard from 3500- 7000 rpm
#3
I run a 224/236 .612/.612 117.5 and I really enjoy it; I believe the lobes are XER. My tune is SD as well. Has great manners and pulls all the way to redline with lots of area under the curve.
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The valve events & overlap favor the L92 heads. I was just curious if I am reinventing the wheel or actually had a decent idea.
Cam Specs:
0.006 0.050 0.200
Intake Duration - ID (first number) 277 228 153
Exhaust Duration - ED (second number) 289 240 161
Lobe Center Angle - LCA (also known as LSA) 114 114 114
Intake Centerline - ICL 112 112 112
Intake Valve opens - IVO 26.5 2 -35.5 BTDC (- indicates ATDC)
Intake Valve closes - IVC 70.5 46 8.5 ABDC
Exhaust Valve Opens - EVO 80.5 56 16.5 BBDC
Exhaust Valve Closes - EVC 28.5 4 -35.5 ATDC (- indicates BTDC)
Exhaust Centerline - ECL 116 116 116
Overlap 55 6 -71 degrees
Bore 4.03
ST = Stroke 4
RL = Rod Length 6.125
Number of cylinders 8
Deck Height (how much pistons come out of the hole) -0.013
Piston Dome or Dish (- for a dome + for a dish) 4
Compressed Head gasket thickness 0.051
Cylinder Head Chamber Volume 70
Static Compression Ratio 11.20 :1
Dynamic Compresion Ratio 8.56 :1
Rod to Stroke Ratio 1.53 :1
Bore to Stroke Ratio 1.01 :1
Cam Specs:
0.006 0.050 0.200
Intake Duration - ID (first number) 277 228 153
Exhaust Duration - ED (second number) 289 240 161
Lobe Center Angle - LCA (also known as LSA) 114 114 114
Intake Centerline - ICL 112 112 112
Intake Valve opens - IVO 26.5 2 -35.5 BTDC (- indicates ATDC)
Intake Valve closes - IVC 70.5 46 8.5 ABDC
Exhaust Valve Opens - EVO 80.5 56 16.5 BBDC
Exhaust Valve Closes - EVC 28.5 4 -35.5 ATDC (- indicates BTDC)
Exhaust Centerline - ECL 116 116 116
Overlap 55 6 -71 degrees
Bore 4.03
ST = Stroke 4
RL = Rod Length 6.125
Number of cylinders 8
Deck Height (how much pistons come out of the hole) -0.013
Piston Dome or Dish (- for a dome + for a dish) 4
Compressed Head gasket thickness 0.051
Cylinder Head Chamber Volume 70
Static Compression Ratio 11.20 :1
Dynamic Compresion Ratio 8.56 :1
Rod to Stroke Ratio 1.53 :1
Bore to Stroke Ratio 1.01 :1
#7
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I can sacrifice some torque down low. With the 4.30's and the cam only LS1 I have limited traction in 1st & 2nd. Still on the stock clutch (87,000 miles) so when that gets replaced at same time traction will be the limiting factor.
My goals are 500 rwhp(+/- 20hp) & 475 lb/ft torque. I would like to have 300+ lb/ft on tap from 2500 rpm up. Just trying to take advantage of my low gear and more cubes.
Dave
My goals are 500 rwhp(+/- 20hp) & 475 lb/ft torque. I would like to have 300+ lb/ft on tap from 2500 rpm up. Just trying to take advantage of my low gear and more cubes.
Dave