What size Cam can I upgrade to?
10-30-2011, 05:08 PM
#1
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What size Cam can I upgrade to? Here is what is done to my motor as of now. I like the Hotcam, but I want something that puts down some more power, but still isn't horrible to drive on the street. What are my options with whats already done?
mildly ported & polished heads & intake (Flowed 249 intake/162 exhaust, 11:1 compression) Heads milled .010, .026" gaskets.
- Stock 63k mi bottom end LT1
- Manley 2.0 intake/1.60 exhaust valves, Crane 10308-1 spring kit,
- GMPP Hotcam
- GMPP 1.6 ratio aluminum roller rockers
- Comp Cams hardened pushrods
- Cloyes double roller timing chain
- Hypertech 160 deg t-stat
- CSI electric water pump
- March 25% underdrive pulley
- 1LE a/c delete pulley
- Lucas/Delphi 42 lbs / hr injectors
- Walbro 255 lph fuel pump
- MSD Blaster Coil, new MSD opti cap/rotor
- Taylor Spiro Pro 8mm wires, NGK TR55 plugs
mildly ported & polished heads & intake (Flowed 249 intake/162 exhaust, 11:1 compression) Heads milled .010, .026" gaskets.
- Stock 63k mi bottom end LT1
- Manley 2.0 intake/1.60 exhaust valves, Crane 10308-1 spring kit,
- GMPP Hotcam
- GMPP 1.6 ratio aluminum roller rockers
- Comp Cams hardened pushrods
- Cloyes double roller timing chain
- Hypertech 160 deg t-stat
- CSI electric water pump
- March 25% underdrive pulley
- 1LE a/c delete pulley
- Lucas/Delphi 42 lbs / hr injectors
- Walbro 255 lph fuel pump
- MSD Blaster Coil, new MSD opti cap/rotor
- Taylor Spiro Pro 8mm wires, NGK TR55 plugs
10-30-2011, 05:17 PM
#4
232/240 especially with your M6. But I'm a little bias. 
Oh, IMO I would upgrade your rockers and springs with a more aggresive cam.
Edit: Do you have headers?
Oh, IMO I would upgrade your rockers and springs with a more aggresive cam.
Edit: Do you have headers?
Last edited by Rob94hawk; 10-30-2011 at 05:32 PM.
10-30-2011, 08:21 PM
#5
How does the car perform now?
Flow numbers are not everything but those are mighty low numbers for bigger valves.
If the car performs well though the flow numbers don't mean anything.
The GMPP rockers have a short slot which is going to be a potential problem with a modern cam with real lift.
Once the car starts making power you might find the TR55s a tad hot so consider a TR6 next time.
Flow numbers are not everything but those are mighty low numbers for bigger valves.
If the car performs well though the flow numbers don't mean anything.
The GMPP rockers have a short slot which is going to be a potential problem with a modern cam with real lift.
Once the car starts making power you might find the TR55s a tad hot so consider a TR6 next time.
