CAMARO6 - View Single Post - LT1 620-630whp street build

oldman · 01-01-2020, 07:16 PM

My first build was blower cam, heads, headers and a P1-SC (P1x was just out), but I got a super deal on the plane P1. I like it the 32% lobe really helped out. I lost a lifter and it cost the cam too. So I'm sticking with mild lifts (check cam motion) Order Johnson lifters period. If you are doing cam, do the heads at the same time. I think fuel you are still shaky and I'd do at least a ZL1 low side, LT4 injectors high side. The power will NOT be an issue, the cam, heads will put the power out even with a 4.25 pulley IMO. My first blow cam had -4 degrees of overlap so it sounded near stock. My current cam has dunno +8 and has a "defined lope", sounds really great with stock headers. I have a posting on the NA forum with it and LT. Very drivable either way, just depends if you want a cam sound. My best advice is pick a good tuner, I've used Pray and Ryne Cunningham, both excellent. Many vendors here also tune and will deliver you a turn key package that is well supported. The one advantage that the meth may offer is cleaner valves. I don't run any PCV so I would not know one way or the other. IMO, you will get the fuel lobe with cam and the LT4 injectors should do it.

On my PS4s, M6 the car can't take more than 1/2 throttle in 1st and wot with what you are planning would be the top of 2nd, powershifting days are over too. As an aside if you cam and drop your pan, I'd change the rod bolts and up the rev limit 6800 RPM, the centri really likes a few more Rs and the bolts are cheap insurance (I maybe just paranoid). I ran mine for 2.5 years with stock rod bolts and 6800 fuel cut. My new cam cut is 7200 and I may raise it to 7400 just to see when the power is on the gear change....centri do like at least 200 RPM, or maybe even 400 RPM more vs a PD. IMO, and the sound of a high comp V8 at 6800 rpm is pure music, especially with the stock headers.

Once again check with a vendor that will deliver you a package. I vouched for the two I used, but there are a lot of guys here that have had super good luck with sponsors of this board. Lastly, I will say after all this, your power level is the max I'd recommend a email tune. At my levels and greater the car is just a handful to tune on the street, I recommend dyno for safety (think Pray is in your area).

01-01-2020, 07:16 PM	#10
oldman Drives: SS 6 speed of course Join Date: Jan 2016 Location: Hilo, HI Posts: 4,346	My first build was blower cam, heads, headers and a P1-SC (P1x was just out), but I got a super deal on the plane P1. I like it the 32% lobe really helped out. I lost a lifter and it cost the cam too. So I'm sticking with mild lifts (check cam motion) Order Johnson lifters period. If you are doing cam, do the heads at the same time. I think fuel you are still shaky and I'd do at least a ZL1 low side, LT4 injectors high side. The power will NOT be an issue, the cam, heads will put the power out even with a 4.25 pulley IMO. My first blow cam had -4 degrees of overlap so it sounded near stock. My current cam has dunno +8 and has a "defined lope", sounds really great with stock headers. I have a posting on the NA forum with it and LT. Very drivable either way, just depends if you want a cam sound. My best advice is pick a good tuner, I've used Pray and Ryne Cunningham, both excellent. Many vendors here also tune and will deliver you a turn key package that is well supported. The one advantage that the meth may offer is cleaner valves. I don't run any PCV so I would not know one way or the other. IMO, you will get the fuel lobe with cam and the LT4 injectors should do it. On my PS4s, M6 the car can't take more than 1/2 throttle in 1st and wot with what you are planning would be the top of 2nd, powershifting days are over too. As an aside if you cam and drop your pan, I'd change the rod bolts and up the rev limit 6800 RPM, the centri really likes a few more Rs and the bolts are cheap insurance (I maybe just paranoid). I ran mine for 2.5 years with stock rod bolts and 6800 fuel cut. My new cam cut is 7200 and I may raise it to 7400 just to see when the power is on the gear change....centri do like at least 200 RPM, or maybe even 400 RPM more vs a PD. IMO, and the sound of a high comp V8 at 6800 rpm is pure music, especially with the stock headers. Once again check with a vendor that will deliver you a package. I vouched for the two I used, but there are a lot of guys here that have had super good luck with sponsors of this board. Lastly, I will say after all this, your power level is the max I'd recommend a email tune. At my levels and greater the car is just a handful to tune on the street, I recommend dyno for safety (think Pray is in your area). __________________ Forged short block, large duration sub .600 lift Cam Motion cam, 7200 RPM fuel cut, Pray Ported Heads, 3.85 pulley D1X, stage II intercooler, DSX secondary low side, DSX E85 sensor, Lingenfelter big bore 2.0 pump, ported front cats, 60608 Borla, LT4 injectors, ZL1 1LE driveshaft and Katech ported TB, ported MSD intake, BTR valvetrain, ARP studs, ProFlow valves, PS4 tires. Last edited by oldman; 01-01-2020 at 07:32 PM.