Cam for carbed 5.3 w/ 4.8 flat top pistons and .035" milled 706's?
12-31-2011, 11:48 AM
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Cam for carbed 5.3 w/ 4.8 flat top pistons and .035" milled 706's? Not sure how much cam I can get away with on my setup.
5.3 Gen III block
4.8 Gen IV pistons (raise compression)
706 heads milled .035" (more compression)
The build I got the recipe from used a 220/224 .575" 112LSA
Should I just copy that?
5.3 Gen III block
4.8 Gen IV pistons (raise compression)
706 heads milled .035" (more compression)
The build I got the recipe from used a 220/224 .575" 112LSA
Should I just copy that?
01-01-2012, 02:11 PM
#3
that cam looks reasonable, but personally I'd go bigger. It all depends on the rest of your driveline setup, and whether you want to tailor everything to the 5.3 setup, or the big cube future plan in your sig, it seems the driveline will need to be different between the 2 engine combo's
01-01-2012, 03:41 PM
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You have gen 4 pistons ??? The piston to bore is .0007" and the piston pin diameter is .945" where as the gen3 pin dimeter is .927" so You'll need gen 4 rods if You don't already have them . Also I can tell You that You could yeild more power by maximizing flow in and out of the engine with the right cam staying at 10 to 1 and You would have the benefit of alot less heat and more ign advance without pre-ignition
01-03-2012, 12:12 AM
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I did this build based off the build Camaro Performers did. With Trick Flow 2.5 heads, above mentioned cam, and LS2 intake they got 491/445.
I can steal a Lunati cam for $100...222/228 ~.580 lift
Goal of this motor is to have a nice dyno sheet to sell it. Building for fun....proceeds are buying a complete UMI suspension package for my Chevelle.
I can steal a Lunati cam for $100...222/228 ~.580 lift
Goal of this motor is to have a nice dyno sheet to sell it. Building for fun....proceeds are buying a complete UMI suspension package for my Chevelle.
01-03-2012, 12:24 AM
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You have gen 4 pistons ??? The piston to bore is .0007" and the piston pin diameter is .945" where as the gen3 pin dimeter is .927" so You'll need gen 4 rods if You don't already have them . Also I can tell You that You could yeild more power by maximizing flow in and out of the engine with the right cam staying at 10 to 1 and You would have the benefit of alot less heat and more ign advance without pre-ignition
Heads got scuffed a bit so need to be milled at least .005" but I feel the .035" to get the 11.5 sounds appealing to a hot rod buyer. But if I can get more power with less compression great.
No cam purchased yet and heads unmilled...so please give input!
Thanks!!
