vicious95z28
Stock
And the light shineth in darkness and the dark comprehendeth it not!
Posts: 10
|
Post by vicious95z28 on Sept 19, 2005 21:47:00 GMT -5
Just recently checked out the XFI cams from Comp. Is anyone running one of these yet. Comp has the power band rating pretty low, even on the largest cam. The 242/248 is only rated from 2200-6200 and lift on these things is pretty big, .584/.579 for the 242/248. They are supposed to be designed specifically for FI engines but I doubt that they will top a heads/cam package type cam. I really have a hard time finding use for an off the shelf cam that's this large unless you have a set of heads like something from AFR AND YOU JUST WANT TO TRY A CAM WITH THEM. However, I don't want anyone to misunderstand me. I'm not saying that they are useless, I just can't justify the larger one in a stock engine and most folks that are bolting on heads now days are doing heads/cam package deals. Guess we'll see them popping up here and there though. If anyone has tried them or knows someone who has fill us in.
later,
Vicious
|
|
|
|
Post by Roadwarrior1956 on Jan 23, 2007 14:25:40 GMT -5
The cam you mension is the 268 it makes amazing topend power but is horrible on the bottom, I highly recommend the 266, I use this one from the XFI group for the LT1, with self ported heads, valve train updated 1.6 RR all Comp cams best components, BBK 1 5/8 shorties, Borla CB, I am getting 355rwhp with 352 rwt, I auto cross and Do track days with it, a great cam, great lowend torgue with super midrange and topend, it's not a bad daily driver either.
In the future I may go with the CCA-07-467-8
Basic Operating RPM Range: 2,000-6,000 RPM
Intake Duration at 050 inch Lift: 230
Exhaust Duration at 050 inch Lift: 236
Duration at 050 inch Lift: 230 int./236 exh.
Advertised Intake Duration: 280
Advertised Exhaust Duration: 288
Advertised Duration: 280 int./288 exh.
Intake Valve Lift with Factory Rocker Arm Ratio: 0.576 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio: 0.570 in.
Valve Lift with Factory Rocker Arm Ratio: 0.576 int./0.570 exh. lift
Lobe Separation (degrees): 113
Notes: Requires exhaust upgrade, headers, and aftermarket computer chip. Automatic vehicles will need a 2,200 stall torque converter.
This is the one I am using now
CCA-07-466-8
Basic Operating RPM Range: 1,800-5,800 RPM
Intake Duration at 050 inch Lift: 218
Exhaust Duration at 050 inch Lift: 224
Duration at 050 inch Lift: 218 int./224 exh.
Advertised Intake Duration: 268
Advertised Exhaust Duration: 276
Advertised Duration: 268 int./276 exh.
Intake Valve Lift with Factory Rocker Arm Ratio: 0.570 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio: 0.565 in.
Valve Lift with Factory Rocker Arm Ratio: 0.570 int./0.565 exh. lift
Lobe Separation (degrees): 113
|
|
|
|
Post by 1bad2k2ta on Jan 23, 2007 15:56:14 GMT -5
Good info.  |
|
|
|
Post by Fire67 on Jan 25, 2007 10:55:13 GMT -5
Im running one thats almost identical to the CCA-07-467-8 listed above. Except mine is on a 114+1lsa and the exh. lift is .571 instead of .570...
With the stroker it made excellent bottom end grunt during break-in. We halted messing with the motor for about a year to do a full on drag transformation to the car. We'll be upping the boost and dyno tuning within 1 1/2 to 2 weeks. I'll post up to let you all know how she does.
|
|
|
|
Post by Roadwarrior1956 on Jan 29, 2007 15:43:58 GMT -5
Im running one thats almost identical to the CCA-07-467-8 listed above. Except mine is on a 114+1lsa and the exh. lift is .571 instead of .570... With the stroker it made excellent bottom end grunt during break-in. We halted messing with the motor for about a year to do a full on drag transformation to the car. We'll be upping the boost and dyno tuning within 1 1/2 to 2 weeks. I'll post up to let you all know how she does. I will be looking forward to your results  |
|
|
|
Post by Fire67 on Jan 30, 2007 9:51:54 GMT -5
Rollbars getting painted as I type!!! I'll be bringing it home tonight, then cleaning it and my garage. Hopefully it'll start warming up again soon cause Im not gonna be getting much done in all this sub 40 weather.
Anyway, All thats left to do is install carpet, interior plastics, seats, wiring for 2nd fuel pump(just the ground), 3.1" blower pulley (about max on D1sc), and then get it on the dyno!
Long story short, should be no more than 2 weeks if all goes well!
|
|
