 |
 | Home | Contact Us | FAQ | Search & Site Map | Link to Us |
 | Sign In | Join | Other 45 Sites in Network |
Car Forum / Driving, Maintenance, Tuning / Maintenance and Repair / August 2005Guess on horsepower???
Good afternoon all, Maybe this is an amateur question, but based on the build specs below, does anybody have a rough idea (or ballpark guess) of what kind of horsepower this engine could generate? I have yet to get my car dyno'd. If it's something that can't be figured out just by looking at the info above, just call me a rookie and I'll be quiet haha... Car: 1963 Ford Galaxie 500 Fastback Engine: 1972 Bored, Stroked, and Balanced 427 Ford Sideoiler (marine or service block) with 428 Crankshaft .030 Overbore to 454 c.i. TRW Forged Pistons Hastings Rings - Part # 2M5517.035 Triple Angle Valve Job Stainless Steel Valve Seats Comp Cams - .605 Lift Camshaft - Part # 33-246-4 Comp Cams - Solid Lifters - Part # - COM 835-16 Comp Cams - Valve Springs - Part # COM 924-16 Comp Cams - Retainers - Part # COM 741-16 Ford Pushrods - Part # FOR M6565L427 Ford Rocker Arms Ford Windage Tray - Part # FOR M6687A390 Milodon High Volume Oil Pump - Part # MIL 18830 ARP Engine Bolt Kit - Part # 555-9802 ARP Head Bolt Kit - Part # 155-3601 Edelbrock Aluminum Heads - Edelbrock Part # 60089 Edelbrock Aluminum Intake Manifold (Perf RPM) - Part # 7105 Holly 850 CFM Double-Pumper Carburetor - Part # 0-9381 Mallory Uni-Lite Distributor Autolite Plug Wires Crane Vacuum Reserve System - Part # 99590-1 Cobra Aluminum Valve Covers - Part # PRATFVC8 Aluminum Oval Air Cleaner Transmission: B&M Ford C-6 Comp. Transmission - Part # 114002 2:46 first gear ratio 1:46 second gear ratio B&M Chrome Transmission Pan with Drain - B&M Holeshot 2400 Stall Converter - Part # 40412 Rear-End: 9" Ford Rear-End with 3.50 Gears Exhaust: 406 C.I. Shorty Cast Iron Headers w/ Header Bypass Plates Custom 2 ½" H-Pipe Oval Turbo Mufflers Custom 2 ½" Tailpipes Custom 2 ½" Drag Pipes Steering & Brakes: Optional Power Steering Optional Power Brakes New or Rebuilt: Flywheel Starter Alternator Engine & Transmission Mounts Master Cylinder & Booster Transmission Yoke Fuel Pump Universal Joints Horns Weather-stripping Fuel Line & Filter Oil Caps 427 Emblems Carpet Trunk Mat Dip Stick Tube Door Handle Pressure Gauge Spark Plugs Heater Hose Engine Belts Radiator Hoses Rear End Gears Mufflers & Pipes Wheel Cylinders I know the factory 427s ran at 410 and 425 hp, depending on carb setup - should I expect around the same, or even greater numbers since I'm bored .030 over to a 454??? I know there is a differernce between hp generated at the engine and hp generated at the rear wheels, due to lost energy, etc. Can someone explain that to me, and the differences I may expect? Assume that I'd be running premium gas. Thanks, Jason > Good afternoon all, > [quoted text clipped - 3 lines] > If it's something that can't be figured out just by looking at the info > above, just call me a rookie and I'll be quiet haha... It is some number > 0 and < 1,000. The only way to get a meaningful number is to put it on a dyno. >>Good afternoon all, >> [quoted text clipped - 6 lines] > It is some number > 0 and < 1,000. > The only way to get a meaningful number is to put it on a dyno. If you can't dyno it, try a dragstrip and a weigh scale. That'll get you close and it's a lot more fun than racing a dyno. :) >>> Good afternoon all, >>> [quoted text clipped - 9 lines] > If you can't dyno it, try a dragstrip and a weigh scale. That'll get > you close and it's a lot more fun than racing a dyno. :) What the drag strip time actually measures is the integral of horsepower over a wide rpm range. Now, in actual fact, that integral is probably more important than peak HP, which is probably what the first poster was interested in. It is possible, of course, to determine peak HP on a dyno, but not to pull it out of drag time. One can compute delivered (chassis) hp knowing weight and using one of those accelerometer devices, which are getting relatively inexpensive these days. Personally, I and a number of others have long felt there should be a formal name given to that integral, and say define it between the two half-power points. To my knowledge, no standard as such for it exists. But it certainly bears an important relationship to performance. Certainly in F1 many decades ago several teams came out with new versions of engines which actually had less peak hp, but widened the power band, and were successful with these engines. That is one thing that makes a number of electric powered cars seem peppier than the HP of the motor would seem to indicate- these motors have a very broad range of rpm over which they develop very good torque. Hey everybody, Thanks so much for the advice. I talked with a guy at the local speed shop yesterday, and he said you can roughly estimate about 1.1 horsepower in a moderately built engine. I'm not taking that equation to heart, because he also let me know that there's another shop about 15 minutes north of my house that has an in-house in-ground dyno. Prices are between $50 to $100, depending on how many pulls and how much tuning you request. I'll probably wait til' next week (payday haha) to take it up there. I'll let you know just how nasty it is! Thanks! Jason Forgot to add - here's the cam specs: http://www.compcams.com/Technical/Search/CamDetails.asp?PartNumber=33-246-4 Pretty stiff cam, hope you have decent idle quality vacuum. Stick grind or high stall convertor. > Forgot to add - here's the cam specs: > > http://www.compcams.com/Technical/Search/CamDetails.asp?PartNumber=33-246-4 Okay, you want a guess, I'll bite. I'll say about 475 peak horsepower, maybe a bit more. Not all speed equipment works as well together as the manufacturer suggests it should. That is why my guess is a bit on the conservative side. >>>> Good afternoon all, >>>> [quoted text clipped - 31 lines] > the motor would seem to indicate- these motors have a very broad range > of rpm over which they develop very good torque. Wow. C'mon... I said you'd get CLOSE. Of course, the only way to accurately measure torque and calculate horsepower is on a dyno, but unless your goal is bragging rights or tuning... the dragstrip is (a) more fun and (b) the real world... bench racing from a dyno slip is just bench racing, and isn't the point of building a hot engine to see how fast it'll go? :) Man, some people need less coffee. :) You're also lending weight to my theory on my next engine for my dirt track Camaro - a nice torquey Pontiac 350. We have to run stock carbs and stock exhausts, so going for 6000+ rpm through stock manifolds is like hooking up a firehydrant to a garden hose... whereas my old 'Bird would just kill from idle to 4000rpm.... and then fall on it's face. I wish I kept it to put the engine in my Camaro... Ray Compression ratio and camshaft duration specs at .050. cam lift are missing, with this info there is a program that can approximate engine output. As suggested by Ray, your 1/4 trap speeds and weight can be plugged into a formula that comes fairly close to hp on that particular run. Good afternoon all, Maybe this is an amateur question, but based on the build specs below, does anybody have a rough idea (or ballpark guess) of what kind of horsepower this engine could generate? I have yet to get my car dyno'd. If it's something that can't be figured out just by looking at the info above, just call me a rookie and I'll be quiet haha... Car: 1963 Ford Galaxie 500 Fastback Engine: 1972 Bored, Stroked, and Balanced 427 Ford Sideoiler (marine or service block) with 428 Crankshaft .030 Overbore to 454 c.i. TRW Forged Pistons Hastings Rings - Part # 2M5517.035 Triple Angle Valve Job Stainless Steel Valve Seats Comp Cams - .605 Lift Camshaft - Part # 33-246-4 Comp Cams - Solid Lifters - Part # - COM 835-16 Comp Cams - Valve Springs - Part # COM 924-16 Comp Cams - Retainers - Part # COM 741-16 Ford Pushrods - Part # FOR M6565L427 Ford Rocker Arms Ford Windage Tray - Part # FOR M6687A390 Milodon High Volume Oil Pump - Part # MIL 18830 ARP Engine Bolt Kit - Part # 555-9802 ARP Head Bolt Kit - Part # 155-3601 Edelbrock Aluminum Heads - Edelbrock Part # 60089 Edelbrock Aluminum Intake Manifold (Perf RPM) - Part # 7105 Holly 850 CFM Double-Pumper Carburetor - Part # 0-9381 Mallory Uni-Lite Distributor Autolite Plug Wires Crane Vacuum Reserve System - Part # 99590-1 Cobra Aluminum Valve Covers - Part # PRATFVC8 Aluminum Oval Air Cleaner Transmission: B&M Ford C-6 Comp. Transmission - Part # 114002 2:46 first gear ratio 1:46 second gear ratio B&M Chrome Transmission Pan with Drain - B&M Holeshot 2400 Stall Converter - Part # 40412 Rear-End: 9" Ford Rear-End with 3.50 Gears Exhaust: 406 C.I. Shorty Cast Iron Headers w/ Header Bypass Plates Custom 2 ½" H-Pipe Oval Turbo Mufflers Custom 2 ½" Tailpipes Custom 2 ½" Drag Pipes Steering & Brakes: Optional Power Steering Optional Power Brakes New or Rebuilt: Flywheel Starter Alternator Engine & Transmission Mounts Master Cylinder & Booster Transmission Yoke Fuel Pump Universal Joints Horns Weather-stripping Fuel Line & Filter Oil Caps 427 Emblems Carpet Trunk Mat Dip Stick Tube Door Handle Pressure Gauge Spark Plugs Heater Hose Engine Belts Radiator Hoses Rear End Gears Mufflers & Pipes Wheel Cylinders I know the factory 427s ran at 410 and 425 hp, depending on carb setup - should I expect around the same, or even greater numbers since I'm bored .030 over to a 454??? I know there is a differernce between hp generated at the engine and hp generated at the rear wheels, due to lost energy, etc. Can someone explain that to me, and the differences I may expect? Assume that I'd be running premium gas. Thanks, Jason To take a guess at what you might hope to get with cam, carburetion, etc. well sorted out, have a look at some of these programs: http://www.cobralads.com/butcher41.html A physical dynamometer or (if you want a lot more apples mixed in with your oranges) dragstrip numbers is the proof of the puttering, of course. Make that well-understood results from a well-run dynamometer appropriate to the expected horsepower: http://dinancars.com/whitepapersFile.asp?ID=9 Cheers, --Joe |
Reply to this Message |
 Sign In
 Join
 My Latest Posts My Monitored Threads My Blog My Photo Gallery My Profile My Homepage Start New Thread Enable EMail Alerts Rate this Thread
|
©2008 Advenet LLC Privacy Policy - Terms of Use
This website includes both content owned or controlled by Advenet as well as content owned or controlled by third parties.