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6 result(s) to your search. (stroke,)   ·  

PS_Front_Fender_Close_9.jpg

buildride
Thu March 1, 2007 11:55pm
1967 427 S.C. Cobra Viper Blue

1967 427 S.C. Cobra Viper Blue.Smeding 427 Cobra Special. Bored and stroked to 427 cu.in., 450hp 450ft lbs est., 10.2:1 comp. 351 SVO Sportsman II block 4.030” bore, 4340 forged crank 4.170” stroke, forged pistons floating pin, 4340 steel H beam rods 7/16 ARP bolts, engine balanced to ½ gram, roller cam .493/.510 lift 279/289 dur, Edelbrock Performer RPM aluminum heads 2.02/1.60 SS valves springs single w/damper, dual roller timing chain, aluminum roller rockers 1.6 ratio, Intake Edelbrock aluminum performer, Holley 600 four barrel, HEI dist, March serpentine billet aluminum pulley set.
Chassis_Dyno-Initial_run_427_HR.jpg

Anthony
Wed April 4, 2007 7:54pm
Rating: 10 
Chassis Dyno - Initial Run 427 High Riser

Self built 427 SO, stock stroke, 429 ci., Dove aluminum High Rsier heads, mildly ported, 10.5 : 1 CR, original holley 780 cfm LeMans carb, vacuum secondary, on an original single four BBL Hi-Riser intake. Chassis Dyno is at Performance Engineering, Hamilton, OH.


Initial run with engine as built by me, with jetting as supplied with carburetor.
Chassis_Dyno-Last_run_427_HR.jpg

Anthony
Wed April 4, 2007 7:55pm
Rating: 10 
Chassis Dyno - Last Run 427 High Riser

Self built 427 SO, stock stroke, 429 ci., Dove aluminum High Riser heads, mildly ported, 10.5 : 1 CR, original holley 780 cfm LeMans carb, vacuum secondary, on an original single four BBL , dual plane, Hi-Riser intake. Chassis Dyno is at Performance Engineering, Hamilton, OH.


Carb jets changed, and timing adjusted by Performance Engineering. Picked up 80 ft-lbs torque and 60 hp by chassis dyno tuning.


With a 20% loss, estimated max flywheel torque is about 600, with about 570 flywheel HP at 5900 rpm's and still climbing.


The torque curve is pretty flat.
Chassis_Dyno-Last_run_A-F_ratio.jpg

Anthony
Wed April 4, 2007 7:57pm
Chassis Dyno - Last Run 427 Hi-Riser Air-Fuel Ratio

Self built 427 SO, stock stroke, 429 ci., Dove aluminum High Riser heads, mildly ported, 10.5 : 1 CR, original holley 780 cfm LeMans carb, vacuum secondary, on an original single four BBL , dual plane, Hi-Riser intake. Chassis Dyno is at Performance Engineering, Hamilton, OH.


Carb jets changed, and timing adjusted by Performance Engineering. Picked up 80 ft-lbs torque and 60 hp by chassis dyno tuning.


With a 20% loss, estimated max flywheel torque is about 600, with about 570 flywheel HP at 5900 rpm's and still climbing.
CrankDetailB_2_.jpg

cobrajam
Sun November 18, 2007 6:06pm
391 FT Steel Crank

knife edged and lightened, went from 75lbs to 65lbs, 3.78in stroke, .010/.010, machined snout and flywheel face to fit FE
IMG_15511.JPG

D-CEL
Mon April 21, 2008 4:04pm
Sonny Bryant big block crank

custom Sonny Bryant forged, 4.250 stroke, 351 mains, boss 429 snout, 460 crank

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