first dyno run
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Teching In
Joined: Dec 2006
Posts: 8
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first dyno run Kind of off vehicle topic here, but
Did the first chassis dyno run on the 454 today. Turbo 400 2.71 gears 29.5 tires…RPM limiter at 4500 138 mph. 93 octane pump gas….
232 hp @ 3850 rpms.
496 lbs ft torque @ 1550 rpms…
Torque was above 400 ft lbs thru 2900 rpms…
@1550 rpms = 146 HP
@3850 rpms = 317 Lbs Ft torque
We had a dip in torque 2600-2800….not sure what that’s all about…
2550-414
2600-408
2650-404
2700-402
2750-405
2800-411
2850-414
2900-410
2950-398
Will scan the docs to a PDF next week. The ones I have are hard to read as there printer was a POS….
Over all satisfied as the cam is a torque profile cam…crower 278H, 9.33 comp ratio, performer oval port, HEI, holly 750, headers…
Am thinking need fatter secondary jetting and or a lighter secondary spring
75 chevy c-10 short bed step side, 454, 4x2 turbo 400, 12 bolt posi 2.71
Did the first chassis dyno run on the 454 today. Turbo 400 2.71 gears 29.5 tires…RPM limiter at 4500 138 mph. 93 octane pump gas….
232 hp @ 3850 rpms.
496 lbs ft torque @ 1550 rpms…
Torque was above 400 ft lbs thru 2900 rpms…
@1550 rpms = 146 HP
@3850 rpms = 317 Lbs Ft torque
We had a dip in torque 2600-2800….not sure what that’s all about…
2550-414
2600-408
2650-404
2700-402
2750-405
2800-411
2850-414
2900-410
2950-398
Will scan the docs to a PDF next week. The ones I have are hard to read as there printer was a POS….
Over all satisfied as the cam is a torque profile cam…crower 278H, 9.33 comp ratio, performer oval port, HEI, holly 750, headers…
Am thinking need fatter secondary jetting and or a lighter secondary spring
75 chevy c-10 short bed step side, 454, 4x2 turbo 400, 12 bolt posi 2.71
