Strictly Attitude
solid fixture here in the forum
That would be a wicked cam or even on the ideal 105 LCA. Adding 14 more me I would call ask 201282 loves ground single pattern on the 105 lca
just want some reassurance on combo choices
- Thread starter Grumpy
- Start date
its NOT TYPICAL on the cheaper cams but its NOT hardly what you might call rare on cams that try to basically maximize results, and the current roller cam designs, because if you think about it the lobe is forced open as the roller rolls up and over the cam lobe but only spring pressure returns the valve most of the way to the cylinder head seat and they don,t want it to slam down and bounce so the lobe designs can be ground differently.An Asymmetrical cam has opening and closing ramps that are unlike and unequal. This profiles usually found on high performance cams and offers a high velocity opening and a lower velocity closing ramp in order to snap the valve open quickly and then set it back down more gently.
roller cam lobe designs are more complex than flat tapper cam lobes simply because the roller lifter allows much more precise valve open and timing events,
lobes on a roller cam,are generally asymmetrical, in the better roller cam lobe designs,
as its more important to open the valve fast, to maximize cylinder fill rates,
but reduce the valve seating/sealing, timing velocity, too prevent the valve bouncing off the seat as or after its closed,
this factor helps stabilize cylinder scavenging and valve train durability,
and stability but should not effect the software dyno results
keep in mind this is a small base circle cam with asymmetrical cam lobes you must use the .050 lift and duration numbers in calcs
https://www.summitracing.com/parts/...MIisTdgsuL3QIVlrjACh0EnAAjEAAYASAAEgKCTvD_BwE
http://garage.grumpysperformance.co...mbers-or-a-good-street-combo-your-after.5078/
http://garage.grumpysperformance.co...mmendation-from-erson-compared-w-crower.4530/
http://garage.grumpysperformance.co...-the-extra-cost-vs-a-flat-tappet-design.3802/
Last edited:
Maniacmechanic1
solid fixture here in the forum
Ok John.
63 degrees Overlap.
Don't think it will Top Grumpys Crane Grind.
Not than Isky 272/282 HR.
Maniacmechanic1
solid fixture here in the forum
The Hi Tech Comp Cams Are Full Race.
Ran one in the TA before I went Isky.
Very Good Hi Tech CC.
Isky with a bit less overlap I gained 75 peak Hp.
50 ft/lbs average 2000-6500.
Peak torque insane.
4th gear punch at 60-100 Street tires all over smoking.
Had to put Mickey Drag Radiala on.
Comp Engineering Slide A Links traction bars.
Could drive and get the power down street racing again.
Maniacmechanic1
solid fixture here in the forum
I am going to DD2000 Grumpys Crane Cam pick above tonight.
Then the Comp XR294 .
Write my own short thesis.
Everyone can analyze themselves.
Be apples to apples .
All one engine simulation used.
DD2000 still works.
Then the Comp XR294 .
Write my own short thesis.
Everyone can analyze themselves.
Be apples to apples .
All one engine simulation used.
DD2000 still works.
Christopher Williams
EZsleepin
Can you also do that Crower 00471?
Maniacmechanic1
solid fixture here in the forum
Interesting Already Grumpy.
its NOT TYPICAL on the cheaper cams but its NOT hardly what you might call rare on cams that try to basically maximize results, and the current roller cam designs, because if you think about it the lobe is forced open as the roller rolls up and over the cam lobe but only spring pressure returns the valve most of the way to the cylinder head seat and they don,t want it to slam down and bounce so the lobe designs can be ground differently.An Asymmetrical cam has opening and closing ramps that are unlike and unequal. This profiles usually found on high performance cams and offers a high velocity opening and a lower velocity closing ramp in order to snap the valve open quickly and then set it back down more gently.
roller cam lobe designs are more complex than flat tapper cam lobes simply because the roller lifter allows much more precise valve open and timing events,
lobes on a roller cam,are generally asymmetrical, in the better roller cam lobe designs,
as its more important to open the valve fast, to maximize cylinder fill rates,
but reduce the valve seating/sealing, timing velocity, too prevent the valve bouncing off the seat as or after its closed,
this factor helps stabilize cylinder scavenging and valve train durability,
and stability but should not effect the software dyno results
keep in mind this is a small base circle cam with asymmetrical cam lobes you must use the .050 lift and duration numbers in calcs
https://www.summitracing.com/parts/...MIisTdgsuL3QIVlrjACh0EnAAjEAAYASAAEgKCTvD_BwE
http://garage.grumpysperformance.co...mmendation-from-erson-compared-w-crower.4530/
http://garage.grumpysperformance.co...-the-extra-cost-vs-a-flat-tappet-design.3802/
Low seat pressure at 125 lbs.
Good for the street.
Used Old School 1.800 tall race SBC valvesprings.
Ponch RAIV does too.
Maniacmechanic1
solid fixture here in the forum
Yes.
I want to do in IVO. IVC. EVO. EVC.
Cam card actual specs.
.006 or .020 .050 specified.
Should be .050 Hyd roller.
Maniacmechanic1
solid fixture here in the forum
keep in mind this is a small base circle cam with asymmetrical cam lobes you must use the .050 lift and duration numbers in calcs
Christopher Williams
EZsleepin
I like the assymetrical lobes, I hace used a few with my last few big blocks. They have really made a difference with street solid rollers on the street. Much easier on the lifters. It's been awhile since I have had lifter issurs with those lobes. My last few were ground by Mike Jones
Christopher Williams
EZsleepin
Which isky was that?
Christopher Williams
EZsleepin
Do you really think that powerband is really that high? It doesn't look that radicalkeep in mind this is a small base circle cam with asymmetrical cam lobes you must use the .050 lift and duration numbers in calcs
Maniacmechanic1
solid fixture here in the forum
Torque Band is stronger with Grumpys Crane Grind.
Hp is down from the Isky I found.
Going to play around with Carb CFM & Headers see if I can optimum.
Hp is down from the Isky I found.
Going to play around with Carb CFM & Headers see if I can optimum.
Maniacmechanic1
solid fixture here in the forum
No Longer listed made.
Secret.
Talk about anything but the Cam for my TA.
Maniacmechanic1
solid fixture here in the forum
OK.
I matched Isky Cam HP.
Torque band is superior.
Takes Large Tube Headers to do it. Means 1-7/8" primary tubes SBC or adapter plates for now very rare 2.000 inch primary tubes.
Schoenfield only mass produced 2.000 for Sprint dirt track cars with 23 degree heads.
1000 cfm carb used.
Be 1085 cfm Holley 4150, Quickfuel, AED, Bolaws BLP Pro Flow 1085 cfm.
Save both ways with Grumpys Crane Cam pick.
typical street setup.
Full Race Hardware used.
I matched Isky Cam HP.
Torque band is superior.
Takes Large Tube Headers to do it. Means 1-7/8" primary tubes SBC or adapter plates for now very rare 2.000 inch primary tubes.
Schoenfield only mass produced 2.000 for Sprint dirt track cars with 23 degree heads.
1000 cfm carb used.
Be 1085 cfm Holley 4150, Quickfuel, AED, Bolaws BLP Pro Flow 1085 cfm.
Save both ways with Grumpys Crane Cam pick.
typical street setup.
Full Race Hardware used.
Christopher Williams
EZsleepin
Don't know about the plates, don't really want to get into that, don't mind getting whatever carb I need though
Christopher Williams
EZsleepin
What's the graph look like?
Maniacmechanic1
solid fixture here in the forum
Big Tube Race Headers.
1000 cfm carb. Be a 1085 CFM Listing Holley 4150 baseplate design.
Street Trim next.
Maniacmechanic1
solid fixture here in the forum
$1,000 -$2,000 Race Carb.
BLP Bolaws the Best.
AED Next pick.
Full Race.
Can use on the street.
For Race not fuel economy....WOT.
Christopher Williams
EZsleepin
I have an aed 950 and 1050 on the shelf