1.8 rocker on 2000 C5 with a&a corvette V2 and stock cam
06-07-2011, 06:14 PM
#1
1.8 rocker on 2000 C5 with a&a corvette V2 and stock cam
I friend of mine have a 1.8 rocker, he decide to not use it.
I haven't any problem with my vette (44000 miles only, less than 4000 with the blower), but i heard that it can be a problem on lots of C5)
Do you think it can be a good idea for me ?
My vette is a 2000 C5
Stock bottom
Stock cam (but the 2000 C5 is GM 12560968 :
With a 1.8 rocker, the virtual spec of the cam should be different... a little more HP for N/A, but i dont know if it's the same effect for FI ???
So, perhaps it's worth on FI than the stock ratio...
And what about the RPM (know, i havent change the max RPM, but it should be a good idea to limit at 6500 or 6800 RPM ?
I give you the link for the roller (good product i heard) :
http://www.summitracing.com/parts/CR...ET&prefilter=1
So... good idea or not ?
I haven't any problem with my vette (44000 miles only, less than 4000 with the blower), but i heard that it can be a problem on lots of C5)
Do you think it can be a good idea for me ?
My vette is a 2000 C5
Stock bottom
Stock cam (but the 2000 C5 is GM 12560968 :
Stock ratio 1.7:1
Intake duration @ 0.5"... : 198
Exhaust duration @ 0.5". : 209
Lift.............................. : 500
Separation lobe............. : 115.5
)
FI a&a corvette kit with Vortech V2 and 3.4 pullay for more PSIIntake duration @ 0.5"... : 198
Exhaust duration @ 0.5". : 209
Lift.............................. : 500
Separation lobe............. : 115.5
)
With a 1.8 rocker, the virtual spec of the cam should be different... a little more HP for N/A, but i dont know if it's the same effect for FI ???
So, perhaps it's worth on FI than the stock ratio...
And what about the RPM (know, i havent change the max RPM, but it should be a good idea to limit at 6500 or 6800 RPM ?
I give you the link for the roller (good product i heard) :
http://www.summitracing.com/parts/CR...ET&prefilter=1
Crane Cams 144759-16 - Crane Gold Race Extruded Rocker Arms
Brand : Crane Cams
Manufacturer's Part Number : 144759-16
Part Type : Rocker Arms
Product Line : Crane Gold Race Extruded Rocker Arms
Summit Racing Part Number : CRN-144759-16
UPC : 021174052244
Rocker Arm Mounting Style : Stud
Rocker Arm Ratio : 1.8
Rocker Arm Style : Full roller
Stud Size : 3/8 in.
Shims Included : No
Rocker Arm Material : Aluminum
Self-Aligning : No
Rocker Arm Body Style : Standard
Rocker Arm Nut Style : Polylock
Slot Width (in) : 0.600 in.
Maximum Spring Diameter (in) : 1.630 in.
Rocker Arm Finish : Gold anodized
Quantity : Sold as a kit.
Notes : Kit includes rocker arms, guideplates, pushrods, and rocker arm studs.
Crane's Gold Race rockers reduce operating friction so well, they can give you up to 25 extra horsepower over your stock pivot ball rockers. Just look at what Crane puts into them:
* CNC-machined castings from super-strong extruded billet aluminum for total strength and reliability
* Precision needle-bearing fulcrums to reduce friction
* 8620 steel alloy roller tips for reliable, easy valve operation
* Special oil inlets to the bearings and roller to ensure reliability under operation
* Slotted bodies for extra stud clearance
* 4140 chromemoly Allen head adjustment nuts
The kit cost $857.95 on summitracing, my friend sell me at $550 Brand : Crane Cams
Manufacturer's Part Number : 144759-16
Part Type : Rocker Arms
Product Line : Crane Gold Race Extruded Rocker Arms
Summit Racing Part Number : CRN-144759-16
UPC : 021174052244
Rocker Arm Mounting Style : Stud
Rocker Arm Ratio : 1.8
Rocker Arm Style : Full roller
Stud Size : 3/8 in.
Shims Included : No
Rocker Arm Material : Aluminum
Self-Aligning : No
Rocker Arm Body Style : Standard
Rocker Arm Nut Style : Polylock
Slot Width (in) : 0.600 in.
Maximum Spring Diameter (in) : 1.630 in.
Rocker Arm Finish : Gold anodized
Quantity : Sold as a kit.
Notes : Kit includes rocker arms, guideplates, pushrods, and rocker arm studs.
Crane's Gold Race rockers reduce operating friction so well, they can give you up to 25 extra horsepower over your stock pivot ball rockers. Just look at what Crane puts into them:
* CNC-machined castings from super-strong extruded billet aluminum for total strength and reliability
* Precision needle-bearing fulcrums to reduce friction
* 8620 steel alloy roller tips for reliable, easy valve operation
* Special oil inlets to the bearings and roller to ensure reliability under operation
* Slotted bodies for extra stud clearance
* 4140 chromemoly Allen head adjustment nuts
So... good idea or not ?
