Quote:
Originally Posted by camcojb
Torque (especially down low) will come up with an efi swap, but HP shouldn't be much different if at all, assuming the carb is sized and tuned correctly. What efi will give you is better driveability, better mileage, easier to make tuning changes, etc. If your engine made a true 700 hp on an engine dyno there must be something different in the car config to get such a large drop in power on a chassis dyno. Was it dynoed without any accessories, open exhaust, etc? It sounds like there's something different in the two setups, like it was dynoed with open headers or a large free-flowing exhaust and the car has restrictive mufflers and a small exhaust, or maybe a small restrictive air filter, etc.
Jody
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Thankyou for your feedback. The engine on the dyno had a 1 inch spacer under the carby and a electric water pump. The engine now has vintage air front runner set up with a normal pump and no spacer. It is driven through a t56 rockland standard gear box a mark williams tailshaft and currie tracklok rear end. In Australia our RWHP figures are always about 10% under the US due to a difference in some percentage allowance in the dynos here to over there. The car made 505hp rwhp in the same trim. I checked everything and we changed up and down jet power valves etc but the set up it had was a good as it would produce HP wise. I did leave the plugs in the car that were in it as they had been indexed and looked pretty well perfect. It is a very good engine and it is very healthy but i want another 100rwhp because a couple of my mates have blown cars and i want more power asperated. I thought about a procharger but i think that that will cause allot of messing around with the vintage air front runner set up. I could up the compression with different pistons???