|
Group: Administrators
Last Active: 2 days ago
Posts: 7.3K,
Visits: 204.6K
|
I have two engines here with ECK-C heads. Both are 1955 engines with one being out of a 1955 Ford police car with a standard transmission and the other being out of a 1955 Mercury also with a standard transmission. Both engines are 292 and both have ECK-B blocks. Not really related to the advertised HP numbers but here’s some info on the carbs. Both have teapot carbs with the police engine having a ECK-T carb while the Mercury had the ECK-G carb. Date coding both engines finds the Mercury engine being built five months earlier than the police engine so that jives with the carb numbers as both carbs are listed for both the 1955 Ford and Mercury 292’s. The 1955 Thunderbirds had their own carbs and differed from these. The difference in the two carbs I’m dealing with is apparently a revision of the main jets and the power valve sizes which was likely a normal deal during the course of production during 1955. The ‘G’ carb came stock with #51 main jets and a 0.040” power valve while the ‘T’ carb came stock with #50 main jets and a 0.043” power valve. The quandary here (according to what books I have) is the Mercury is rated at 188 HP while the Ford is rated at 193 HP. The Mummert site lists the ECK-C heads as being 198 HP but I’m inclined to believe that’s the automatic transmission HP rating which should be another set of heads getting the compression ratio up around 8.5:1. I reverse engineered the static compression ratio for the stock police engine upon disassembly and found it to be 7.6:1. That comes close to my books saying that both the 188 HP Merc and 193 HP Ford 292 are listed as being 7.5:1 SCR. I haven’t disassembled the Merc engine yet but will also reverse engineer the SCR and confirm that it’s in the 7.5:1 range as listed in some of my literature for the stick shift cars. So my question is “What’s the correct HP number for a 292 with ECK-C heads?”
  Lorena, Texas (South of Waco)
|