|04-04-2013 09:41 PM|
|1Gary||Clean looking build.Nice job.|
|04-04-2013 09:24 PM|
|04-04-2013 05:58 PM|
|vinniekq2||techs post confirms what we all agree on|
|04-04-2013 05:30 PM|
You know, sometimes you just hit a sweet spot and the OP has done just that with this combination. This little motor makes some very pretty hp and torque curves. Any of you guys who want a 327 that will pull away strongly from a stop and still haul the mail at the top, should emulate this combination. I used the flow numbers from the Stan Weiss site to run this Sim.....Dynamic Compression Ratio of this combo is 8.428:1.
RPM HP TORQUE
2000 138 363
2500 177 371
3000 226 395
3500 280 421
4000 331 433
4500 375 435
5000 407 428
5500 425 406
6000 415 364
Peak volumetric efficiency 92.7% @5000
Peak BMEP 198.7 lbs @4500
Maximize the combo by retarding the cam 4 degrees and pick up 9 hp and 4 ft/lbs of torque. 650 is just the right amount of carburetor.
Good job SSCamaro_510.
|04-04-2013 01:25 PM|
|1Gary||Well we are alot like everyone else in one sense.Pretty good at spending other people's money.LOL!!.|
|04-04-2013 12:31 PM|
|04-04-2013 12:27 PM|
|1Gary||To be honest when I skimmed over this thread and saw 327 and aluminum heads the first thought that enter my mind was lean on the compression,build a RPM capable bottom end,cam it to buzz to the moon with heads accordingly to breath.Remember the Camaro's are heavy cars that need that to move them.|
|04-04-2013 06:02 AM|
Aluminum Heads for Mild 327?
What happened to the Edelbrock Performer Rpm heads? If I was building a 327 ci My choice would be the Edelbrock Performer Rpm heads with the matching Edelbrock Performer Rpm intake maniflod. I have read where people are having too many problems with the air gap manifold. You can do a comparison here on Hot Rodders forum between the Performer RPM and the Performer RPM Air Gap. On the rear gears I would go with 342's or 355's. That 327 needs to get the rpms up quick. Most people use 373's for the street and with OD transmission use 4:11 or 4:56. Good Luck, nice Camaro. It looks like a copy of my 67 RS/SS Camaro. 491 ci, TH400, 12 bolt 4:11 rear, Caltracs and frame connectors too. Front suspension replaced with Global West upper and lower control arms. Unisteer manual Rack and pinion also.
|04-03-2013 07:56 PM|
I see the HP at 390 ish,torque? maybe 375 plus? 6k maximum RPM for power
how does it go?
|04-03-2013 07:35 PM|
Well after many months the car is almost together,another couple Weeks...can't wait!
This is what I ended up going with:
327 bored .030
Edelbrock E-tec 170cc heads.
Edelbrock RPM Air-Gap
Stock crank and rods
MSD Ready to run HEI Distributor
Comp XR270HR Hydraulic Roller Cam
Comp Valve Train
1.5 Roller Rockers
Holley #4150 650cfm Vacuum Secondaries
1 5/8” Headers
2 1/2” Dual exhaust into flowmasters
Gonna put a TH-350 and 3.36 rear gears behind it...what kind of HP/TQ am I looking at with this combo?
|08-26-2012 02:20 PM|
|08-26-2012 01:36 PM|
cd,I agree with you,the roller would make more power.better duration for a 327 and more lift.The power would increase everywhere,including the bottom end. A bigger cam does not "always" mean a loss of low rpm torque. neutron meters and kilowatts are different ways of expressing something that humans can kind of understand.
and thanks for reiterating that a wider power band is required to match transmission ratios.
I no longer have a desire to argue here. 327s make power at higher rpms than 350s.putting a smaller cam in a smaller engine is not entirely accurate for rpms. duration is time,lift is flow,o
|08-26-2012 12:49 PM|
|08-26-2012 12:23 PM|
hp and tq always cross at 5252, there is no significance of that number though other than how hp and torque are defined, switch to metric readings and 5252 carries no significance.
To a certain point running a larger cam will produce more hp and it will produce it at a higher RPM... which means that if you don't ever run in that RPM the "increase in power" will actually make your car slower as it results in a loss of power in a lower RPM. Which is why you need to compare power output at the same specified rpm to get a better comparison.
For a perfect shift on a race track you do NOT shift at peak hp down to peak tq, you shift to maximize your average hp, meaning you shift past peak hp and fall to a place right below peak hp (how far in each direction depends on your power curve).
A 5500 rpm 327 maybe exactly what is needed depending on the application. If you run 50hp less than a more aggressively built 327 but are never in the rpm range it makes the additional power the engine with less power can actually make your car run a little faster.
|08-26-2012 11:29 AM|
I keep coming back to these two also:
Street Master Cam - Chevrolet Small Block 276/286 - Lunati Power
Voodoo Hyd Cam - Chevrolet Small Block 268/276 - Lunati Power
Would those make more power?
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