460 Build Cam Choice and Cam Phasing
#1
460 Build Cam Choice and Cam Phasing
Here is the build....
Truck
'73 F100 Ranger 2WD LWB. C6, 3.08 Rear Gears
Block
460, bored to .040 to 468, new 87-93 460 fuelie flat top KB Hypers gapped .030, decked block .020 to boost comp ratio up to around 9.5 - 1.
Heads and Cam
Summit 3501 Cam - 218/228 at .050. 114 LSA, recommended 109 ICL. Lift is .503 (this is where my question below comes in)
Extensive Exhaust porting on DV3E heads per Re-Incarnation "Mad Porter's". Stock intake valve size 2.08" and 1.65". Trick Flow Dual Damper springs, 110# on the seat 318# at 1.30" height open.
Intake and Carb
Edelbrock Performer 460
Edelbrock 750 Electric Choke Carb
Exhaust
Long Tubes with dual exhaust
Ignition
Duraspark
I have read many, many articles and forums on cam selection, etc, and ran simulations in desktop dyno and the summit 3501 holds it's own, especially for the budget. I simulated different lifts, lsa's, icl's, durations and I am fairly happy with the estimated output with the 3501 in the rpm range that I plan on using. Gives up a little bottom end to the Comp XE262H (11hp and 22lb ft below 3500), but gains a little HP up top (21hp and 8lb ft) from 3500 to 5500. Many respected forum members have recommended the 3501. My question comes when I simulate this cam that has a 114 LSA and recommended 109 ICL (5 degrees advanced built in). I am just wondering would I be better with a lower LSA, or would I be ok with what I have.
Below timing is @ .050 installed at the 109 ICL
IVO 0 BTDC
IVC 38 ABDC
EVO 53 BBDC
EVC -5 ATDC
Any comments, help, would be appreciated before I slide this 3501 cam in. I am trying to keep on a budget, but I someone knows I am leaving alot of hp on the table I would be willing to swap cams.
Thanks!
Truck
'73 F100 Ranger 2WD LWB. C6, 3.08 Rear Gears
Block
460, bored to .040 to 468, new 87-93 460 fuelie flat top KB Hypers gapped .030, decked block .020 to boost comp ratio up to around 9.5 - 1.
Heads and Cam
Summit 3501 Cam - 218/228 at .050. 114 LSA, recommended 109 ICL. Lift is .503 (this is where my question below comes in)
Extensive Exhaust porting on DV3E heads per Re-Incarnation "Mad Porter's". Stock intake valve size 2.08" and 1.65". Trick Flow Dual Damper springs, 110# on the seat 318# at 1.30" height open.
Intake and Carb
Edelbrock Performer 460
Edelbrock 750 Electric Choke Carb
Exhaust
Long Tubes with dual exhaust
Ignition
Duraspark
I have read many, many articles and forums on cam selection, etc, and ran simulations in desktop dyno and the summit 3501 holds it's own, especially for the budget. I simulated different lifts, lsa's, icl's, durations and I am fairly happy with the estimated output with the 3501 in the rpm range that I plan on using. Gives up a little bottom end to the Comp XE262H (11hp and 22lb ft below 3500), but gains a little HP up top (21hp and 8lb ft) from 3500 to 5500. Many respected forum members have recommended the 3501. My question comes when I simulate this cam that has a 114 LSA and recommended 109 ICL (5 degrees advanced built in). I am just wondering would I be better with a lower LSA, or would I be ok with what I have.
Below timing is @ .050 installed at the 109 ICL
IVO 0 BTDC
IVC 38 ABDC
EVO 53 BBDC
EVC -5 ATDC
Any comments, help, would be appreciated before I slide this 3501 cam in. I am trying to keep on a budget, but I someone knows I am leaving alot of hp on the table I would be willing to swap cams.
Thanks!
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