Dyno Results - 454 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

1968SWBBigBlock · 05-27-2008, 05:46 AM

For any of you that have been on the fence or wondered about running your motor on a dyno, this was a great experience. We could monitor oil pressure and temp, coolant temp, Air/fuel ratio per cylinder, fuel usage between front and back bowls.
We broke the motor in on the dyno and we watched as the oil temp climbed 240 degrees, to hot to be comfortable, so we shut the motor down to let it cool - not a comfortable moment while breaking in a new camshaft - but something I would have never seen if I broke in the cam in my truck
After breakin the oil temps came into line - it can be as simple as a little to much oil in the sump to cause the temps to go up.
Dyno pulls & tuning by Platinum Engine and dyno services, Norwich Ohio, machine work by Watson & Ruppel performance, Sarahsville Ohio
All results are corrected per sttp standards
3300 = 306.5hp x 487.8TQ
4000 = 387.7hp x 509.1 TQ
4400 = 447.0HP x 533.6 TQ
4700 = 465.9HP x 520.6 TQ
5200 = 484.9 HP x 489.8 TQ
5400 = 467.9 HP x 455.1 TQ
MAX = 484.9 HP x 533.6 TQ

454
.040 over bore = 463CI
Edelbrock Performer RPM ported and gasket matched to heads
1” phnolic spacer plate
770 Holley SA carb
MSD Street Fire HEI Distributor
1.7/8” headers with 3” collectors
Comp Cams roller tip rockers
Comp Cams 924 springs
Comp Cams 10 degree retainers
Comp Cams 3/8” Hi Tech pushrods, .080 Wall
Comp Cams Guide Plates
2.19 Intake x 1.88 Exhaust valves – sst
781 Heads ported and gasket matched to intake decked & cc’ed to achieve 10.0-1 compression, competition valve job with blended bowls, bronze guides, cut for high lift camshaft,
KB FHR Forged pistons with .200 dome = 10.0-1 compression with decked head and block, uses the heavier ring pack
Hastings Moly Rings
Pistons are floated on pins
Stock rods with ARP wave loc bolts
Cast Crank – stock turned 10-10, Bearing clearance .0024 Avg.
ARP main bolts- 2 bolt main
Melling M77 oil pump with heavy spring
ARP oil pump studs
Lunati 60204 camshaft set up at 105.250 degrees, nitrided for extra hardness
.554 x .572 lift & 276 x 284 Advertised Duration
Microtrol lifters
Grooved lifter bores for better camshaft oiling
Rotating assembly is spin balanced to within 1 gram
Block was decked, honed with torque plates to .040, & line bored
15W-40 Lubriplate GPO motor oil
GM EOS
Moroso 7 Qt oil Pan & pickup

05-27-2008, 05:46 AM	#1
1968SWBBigBlock Active Member Join Date: Oct 2006 Location: Ohio Posts: 1,643	Dyno Results - 454 For any of you that have been on the fence or wondered about running your motor on a dyno, this was a great experience. We could monitor oil pressure and temp, coolant temp, Air/fuel ratio per cylinder, fuel usage between front and back bowls. We broke the motor in on the dyno and we watched as the oil temp climbed 240 degrees, to hot to be comfortable, so we shut the motor down to let it cool - not a comfortable moment while breaking in a new camshaft - but something I would have never seen if I broke in the cam in my truck After breakin the oil temps came into line - it can be as simple as a little to much oil in the sump to cause the temps to go up. Dyno pulls & tuning by Platinum Engine and dyno services, Norwich Ohio, machine work by Watson & Ruppel performance, Sarahsville Ohio All results are corrected per sttp standards 3300 = 306.5hp x 487.8TQ 4000 = 387.7hp x 509.1 TQ 4400 = 447.0HP x 533.6 TQ 4700 = 465.9HP x 520.6 TQ 5200 = 484.9 HP x 489.8 TQ 5400 = 467.9 HP x 455.1 TQ MAX = 484.9 HP x 533.6 TQ 454 .040 over bore = 463CI Edelbrock Performer RPM ported and gasket matched to heads 1” phnolic spacer plate 770 Holley SA carb MSD Street Fire HEI Distributor 1.7/8” headers with 3” collectors Comp Cams roller tip rockers Comp Cams 924 springs Comp Cams 10 degree retainers Comp Cams 3/8” Hi Tech pushrods, .080 Wall Comp Cams Guide Plates 2.19 Intake x 1.88 Exhaust valves – sst 781 Heads ported and gasket matched to intake decked & cc’ed to achieve 10.0-1 compression, competition valve job with blended bowls, bronze guides, cut for high lift camshaft, KB FHR Forged pistons with .200 dome = 10.0-1 compression with decked head and block, uses the heavier ring pack Hastings Moly Rings Pistons are floated on pins Stock rods with ARP wave loc bolts Cast Crank – stock turned 10-10, Bearing clearance .0024 Avg. ARP main bolts- 2 bolt main Melling M77 oil pump with heavy spring ARP oil pump studs Lunati 60204 camshaft set up at 105.250 degrees, nitrided for extra hardness .554 x .572 lift & 276 x 284 Advertised Duration Microtrol lifters Grooved lifter bores for better camshaft oiling Rotating assembly is spin balanced to within 1 gram Block was decked, honed with torque plates to .040, & line bored 15W-40 Lubriplate GPO motor oil GM EOS Moroso 7 Qt oil Pan & pickup Attached Images __________________ 1968 SWB 454 + .040, 490HP x 540 FT pounds of Torque 10-1 Kb Forged pistons, recon rods w/ ARP wave loc bolts 781 heads Ported with 2.19/1.88 SSTvalves Lunati 60204 cam, Micro Trol lifters, Ported Edelbrock Performer Rpm manifold armor coated, Pertronix Triple Strike Ignition Holley 770 Street Avenger carb,Headers armor coated Built by Watson Ruppel Performance in Sarahsville Ohio. Hardshift Tranny Built Turbo 350,TSI 10" 3000 stall 12 Bolt Eaton Posi 4.10 Richmond Gears moser axles 18.5" x 31" Hoosier Pro Street Radials ET Classic 5 Wheels - polished Power Steering, Power Brakes,Disc Brakes,Tach & Gauge Dash, Tilt,Factory Air (gone) Custom Paint & Body Work Special thanks to my wife, my son and my money tree Last edited by 1968SWBBigBlock; 05-27-2008 at 05:50 AM. Reason: added info



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