engine dyno
Thread Starter
|
Senior User
Joined: Apr 2005
Posts: 453
Likes: 0
engine dyno
Could someone calculate roughly the horse power and torquefor my 1970s 428 that im building.
Cam/lifters<TABLE border=1><TBODY><TR><TD>Grind Number:</TD><TD>266 H10</TD></TR><TR><TD>Operating Range:</TD><TD>1400-4800 RPM</TD></TR><TR><TD>Duration Advertised:</TD><TD>266° Intake / 266° Exhaust</TD></TR><TR><TD>Duration @ .050'' Lift:</TD><TD>210° Intake / 210° Exhaust</TD></TR><TR><TD>Valve Lift w/1.76 Rockers:</TD><TD>.516'' Intake / .516'' Exhaust</TD></TR><TR><TD>Lobe Separation Angle:</TD><TD>110°</TD></TR><TR><TD>Max Lift Angle:</TD><TD>105° ATDC Intake / 115° BTDC Exhaust</TD></TR><TR><TD>Open/Close @.050'' Cam Lift:</TD><TD>Intake - 0° BTDC (opens) / 30° ABDC (closes)
Exhaust - 40° BBDC (opens) / (10°) BTDC (closes)</TD></TR></TBODY></TABLE>
factory springs/valves
Rotating assembly is stock
factory 4bbl intake/reman holley 600 carb
Hooker headers, dual exhaust
fel-pro head gaskets
is that about all i need.
thanks
Cam/lifters<TABLE border=1><TBODY><TR><TD>Grind Number:</TD><TD>266 H10</TD></TR><TR><TD>Operating Range:</TD><TD>1400-4800 RPM</TD></TR><TR><TD>Duration Advertised:</TD><TD>266° Intake / 266° Exhaust</TD></TR><TR><TD>Duration @ .050'' Lift:</TD><TD>210° Intake / 210° Exhaust</TD></TR><TR><TD>Valve Lift w/1.76 Rockers:</TD><TD>.516'' Intake / .516'' Exhaust</TD></TR><TR><TD>Lobe Separation Angle:</TD><TD>110°</TD></TR><TR><TD>Max Lift Angle:</TD><TD>105° ATDC Intake / 115° BTDC Exhaust</TD></TR><TR><TD>Open/Close @.050'' Cam Lift:</TD><TD>Intake - 0° BTDC (opens) / 30° ABDC (closes)
Exhaust - 40° BBDC (opens) / (10°) BTDC (closes)</TD></TR></TBODY></TABLE>
factory springs/valves
Rotating assembly is stock
factory 4bbl intake/reman holley 600 carb
Hooker headers, dual exhaust
fel-pro head gaskets
is that about all i need.
thanks
Post Fiend
Joined: Jan 2003
Posts: 8,600
Likes: 4
From: Iowa
I should be able to do this...
Here are the seat-to-seat timing numbers for that cam. They can be calculated with the info provided.
IVO:28
IVC:58
EVO:68
EVC:18
I need to know the compression ratio and what heads are being used in order to run the simulation. At the very least tell me what pistons and what heads, and I should be able to calculate it pretty close.
Here are the seat-to-seat timing numbers for that cam. They can be calculated with the info provided.
IVO:28
IVC:58
EVO:68
EVC:18
I need to know the compression ratio and what heads are being used in order to run the simulation. At the very least tell me what pistons and what heads, and I should be able to calculate it pretty close.
Thread Starter
|
Senior User
Joined: Apr 2005
Posts: 453
Likes: 0
Trending Topics
Post Fiend
Joined: Jan 2003
Posts: 8,600
Likes: 4
From: Iowa
Ok those are probably standard heads.
Ok, I'm coming up with 8.68:1 compression (based on 73cc chambers), 309hp @ 4000rpm, and 461ft-lbs @ 2000rpm.
I would suggest you change your head gasket selection to a Mr. Gasket #1132 steel shims for more compression. Then you'd at least have 9.08:1, again figuring 73cc chambers. That would raise the power output to 316hp @ 4000rpm, and 469ft-lbs @ 2000rpm.
Ok, I'm coming up with 8.68:1 compression (based on 73cc chambers), 309hp @ 4000rpm, and 461ft-lbs @ 2000rpm.
I would suggest you change your head gasket selection to a Mr. Gasket #1132 steel shims for more compression. Then you'd at least have 9.08:1, again figuring 73cc chambers. That would raise the power output to 316hp @ 4000rpm, and 469ft-lbs @ 2000rpm.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
10 Things Every Truck Owner NEEDS (2026 Edition)
Michael S. Palmer
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo