Advice on cam, intake, and head combo
03-28-2011, 08:44 PM
#21
2nd Gear Member
Join Date: Nov 2010
Location: Ontario
Posts: 493
Do I need to just cut some of it off. I hate the trumk lid sticking up. I am probably being ****, but that's me. All came from NPD. Do I need to try another source? That is probably the problem. With all the power you are making, what all have you done to the frame? Much appreciated.
As for my frame I have Competition bolt on subframe connectors but have them welded on..I am also running an export brace but that is it..
03-28-2011, 09:00 PM
#22
2nd Gear Member
Thread Starter
Join Date: Jan 2011
Location: NC
Posts: 341
The weatherstrip should crush down and relax over a period of time..My trunk lid was hard to shut for a while after I installed mine but gradually it returned to normal..I actually adjusted the latch to take a bit of the pressure off initially so I didn't have to slam the lid so hard to get it to shut...I can pretty much guarantee that is where your exhaust smell is coming from if you aren't running the seal......
As for my frame I have Competition bolt on subframe connectors but have them welded on..I am also running an export brace but that is it..
As for my frame I have Competition bolt on subframe connectors but have them welded on..I am also running an export brace but that is it..
03-28-2011, 10:37 PM
#23
6th Gear Member
Join Date: Apr 2007
Location: California
Posts: 10,468
That setup is fine with a 3.92 gear. The only issue might be a slightly small carb at 600cfm, a good 650-750 would work better but the 600 won't be a major issue.
And those cam specs don't mean much, without knowing the io/ic/eo/ec points you don't actually have cam specs. My hyd roller is 218/.050 intake 230/.050 exhaust and the lift is .590/.578 on a 111 lsa. The power band is 2,000-6,500rpm with huge torque in the 3,000-6,500 range. Idles with a bit of a lump and 10" of vacuum completely stable at 800rpm.
And those cam specs don't mean much, without knowing the io/ic/eo/ec points you don't actually have cam specs. My hyd roller is 218/.050 intake 230/.050 exhaust and the lift is .590/.578 on a 111 lsa. The power band is 2,000-6,500rpm with huge torque in the 3,000-6,500 range. Idles with a bit of a lump and 10" of vacuum completely stable at 800rpm.
03-29-2011, 04:03 AM
#24
6th Gear Member
Join Date: Oct 2006
Location: Cork, Ireland
Posts: 6,417
That setup is fine with a 3.92 gear. The only issue might be a slightly small carb at 600cfm, a good 650-750 would work better but the 600 won't be a major issue.
And those cam specs don't mean much, without knowing the io/ic/eo/ec points you don't actually have cam specs. My hyd roller is 218/.050 intake 230/.050 exhaust and the lift is .590/.578 on a 111 lsa. The power band is 2,000-6,500rpm with huge torque in the 3,000-6,500 range. Idles with a bit of a lump and 10" of vacuum completely stable at 800rpm.
And those cam specs don't mean much, without knowing the io/ic/eo/ec points you don't actually have cam specs. My hyd roller is 218/.050 intake 230/.050 exhaust and the lift is .590/.578 on a 111 lsa. The power band is 2,000-6,500rpm with huge torque in the 3,000-6,500 range. Idles with a bit of a lump and 10" of vacuum completely stable at 800rpm.
I don't know if it was covered before. But that block he's having he said he is not changing anything on bottom end. How far could you actually safely spin this thing? thos will be a huge decision factor on the cam?
03-29-2011, 10:08 AM
#25
2nd Gear Member
Thread Starter
Join Date: Jan 2011
Location: NC
Posts: 341
That setup is fine with a 3.92 gear. The only issue might be a slightly small carb at 600cfm, a good 650-750 would work better but the 600 won't be a major issue.
And those cam specs don't mean much, without knowing the io/ic/eo/ec points you don't actually have cam specs. My hyd roller is 218/.050 intake 230/.050 exhaust and the lift is .590/.578 on a 111 lsa. The power band is 2,000-6,500rpm with huge torque in the 3,000-6,500 range. Idles with a bit of a lump and 10" of vacuum completely stable at 800rpm.
And those cam specs don't mean much, without knowing the io/ic/eo/ec points you don't actually have cam specs. My hyd roller is 218/.050 intake 230/.050 exhaust and the lift is .590/.578 on a 111 lsa. The power band is 2,000-6,500rpm with huge torque in the 3,000-6,500 range. Idles with a bit of a lump and 10" of vacuum completely stable at 800rpm.
03-29-2011, 12:16 PM
#26
6th Gear Member
Join Date: Apr 2007
Location: California
Posts: 10,468
The headers will be a bit small for the setup in terms of top end power, but the low and mid range will be fine. Things like carbs and headers can always be replaced later.
As far as bottom end and rpm, I'm running a stock replacement crank. Stock 302 cranks are high nodular iron cranks, aka cast steel. The rods are decent, and with some better pistons it should be ok to 6,500, but I personally would be nervous turning it that continuously like in a road race setup. But for a street strip/cruiser it's fine, provided everything is in good shape.
A good set of light pistons go a long way in that regard, rods usually fail at the top of the exhaust stroke when the piston changes direction. The lighter the piston, the less the inertial loading placed on the rod.
And yes, stable 10" vacuum 800rpm idles are the perks of a custom cam. =) Things like lift and duration just tell you the lift and duration, but now when the valves open and close or the profile of the cam.
As far as bottom end and rpm, I'm running a stock replacement crank. Stock 302 cranks are high nodular iron cranks, aka cast steel. The rods are decent, and with some better pistons it should be ok to 6,500, but I personally would be nervous turning it that continuously like in a road race setup. But for a street strip/cruiser it's fine, provided everything is in good shape.
A good set of light pistons go a long way in that regard, rods usually fail at the top of the exhaust stroke when the piston changes direction. The lighter the piston, the less the inertial loading placed on the rod.
And yes, stable 10" vacuum 800rpm idles are the perks of a custom cam. =) Things like lift and duration just tell you the lift and duration, but now when the valves open and close or the profile of the cam.
03-29-2011, 12:34 PM
#27
2nd Gear Member
Join Date: Nov 2010
Location: Ontario
Posts: 493
Sorry I meant to say Competition Engineering which is the company name..They are plenty heavy for your application..
03-29-2011, 08:16 PM
#28
2nd Gear Member
Thread Starter
Join Date: Jan 2011
Location: NC
Posts: 341
That setup is fine with a 3.92 gear. The only issue might be a slightly small carb at 600cfm, a good 650-750 would work better but the 600 won't be a major issue.
And those cam specs don't mean much, without knowing the io/ic/eo/ec points you don't actually have cam specs. My hyd roller is 218/.050 intake 230/.050 exhaust and the lift is .590/.578 on a 111 lsa. The power band is 2,000-6,500rpm with huge torque in the 3,000-6,500 range. Idles with a bit of a lump and 10" of vacuum completely stable at 800rpm.
And those cam specs don't mean much, without knowing the io/ic/eo/ec points you don't actually have cam specs. My hyd roller is 218/.050 intake 230/.050 exhaust and the lift is .590/.578 on a 111 lsa. The power band is 2,000-6,500rpm with huge torque in the 3,000-6,500 range. Idles with a bit of a lump and 10" of vacuum completely stable at 800rpm.
#7122
ENGINE: FORD 289-302 V8
RPM RANGE: 1500-6500
Duration at 0.006" Lift: Intake: 290° Exhaust: 300°
Duration at 0.050" Lift: Intake: 224° Exhaust: 234°
Lift at Cam: Intake: 0.310" Exhaust: 0.325"
Lift at Valve: Intake: 0.496" Exhaust: 0.520"
Timing at 0.050" lift: Open Close
Intake: 5° BTDC 39° ABDC
Exhaust: 54° BBDC 0° ATDC
Centerlines: Lobe Separation - 112° Intake Centerline - 107°
If that is of no help, let me know what everything stands for. I have already compiled a big folder on swapping these few parts. Thanks for your patience.
03-29-2011, 08:22 PM
#29
2nd Gear Member
Thread Starter
Join Date: Jan 2011
Location: NC
Posts: 341
i don't think you'd ever get a stable idle vacuum at 800 with such a lift/duration/lsa. must be the perks of a custom grind.
I don't know if it was covered before. But that block he's having he said he is not changing anything on bottom end. How far could you actually safely spin this thing? thos will be a huge decision factor on the cam?
I don't know if it was covered before. But that block he's having he said he is not changing anything on bottom end. How far could you actually safely spin this thing? thos will be a huge decision factor on the cam?