I'd forgotten this, but a few of the tricks that Carl used were as follows: If a team was in the top three, their engines were torn down in front of NASCAR inspectors. The team could decide which side of the engine to tear down. Carl would mill one head, and one side of the block. He tore down the side of the block with the milled block, and stock head. The inspectors would measure the head CC's with oil and look at the pistons for stock. The other side of the block with the milled head never was torn down. Carl mixed high performance Texaco gas with the NASCAR Pure Oil gas; he mixed in aviation gas too. They also "blew up" the gas tank with high pressure to get in more gas, at the end of a race, they had a hole in the trunk where they could take a maul or 2x4, hit the tank and "deflate" it to its original gallonage. Any team worth its salt was doing similar things, so the Kiekhaefer teams were being just as smart as the rest. No harm, no fowl. Dan -----Original Message----- From: Chrysler300@xxxxxxxxxxxxxxx [mailto:Chrysler300@xxxxxxxxxxxxxxx]On Behalf Of Dan Elliott Sent: Wednesday, May 07, 2008 9:58 AM To: Lettercars@xxxxxxx; c300@xxxxxxx; Chrysler300@xxxxxxxxxxxxxxx Subject: [Chrysler300] RE: AMAs, 355HP, Manual C300, et.al. Hi Gil-- I am only postulating that Carl K.had more than one c300 with manual trans because he had more than one c300 on the track at several 1955 races between April and November. Since the powerflite was a liability, it would have made no sense to put Fonty and others behind the wheel in a powerflite car. Assuming they used Dodge truck transmissions, it may have been easier for Carl to convert the c300's himself to manual trans rather than get them from Chrysler. The rules changed for 1956, and the manual trans needed to be a production option: "Transmissions must be standard for make and model car used" I agree on the 355 HP option. Also, NASCAR approved the 355 HP option with "93 CC" heads. At some point NASCAR might have approved the 4 bolt exhaust manifold, but I have no evidence of it. The rules stated generally: "Standard exhaust manifold and header pipe for make and model only. No alterations or changes permitted from the engine block to muffler take-off." I wish I had focused more on this point when I was at NASCAR archives, but they do charge a minimum of $25/hour to do research, so I didn't want to take too much time. I'm still hunting for that elusive picture from late in the 1956 season showing the 355 Hood! Dan -----Original Message----- From: Lettercars@xxxxxxx [mailto:Lettercars@xxxxxxx] Sent: Wednesday, May 07, 2008 9:23 AM To: us@xxxxxxxxxx; c300@xxxxxxx; Chrysler300@xxxxxxxxxxxxxxx Subject: AMAs, 355HP, Manual C300, et.al. Rich, Dan, and All: I will try not to belabor this topic. (Scared to!!) 1. My copy of the 1955 AMA Specs is also the 2-15-55. I made a copy of it while at Chrysler in the '70s and would have certainly tryed to get the latest issue. Doesn't mean I did, though. 2. The 355 300B utilized a higher compression HEAD. The confidential bulletin to the dealers is dated June 13, 1956, and states the new heads are 10 to1. It also states the heads are identified by part "1730369-1". They are not interchangeable with the 9.0 1955 C300 heads. They are to be used only with AGR-31 or colder plugs with ignition timing set from 0 degrees to 4 degrees BTDC "depending upon octane rating of fuel available". Wonder if these had a PN riveted on them as Owen surmised his 390HP "C" may have. Likely we will never know. 3. Chrysler microfilm records show only ONE C300 being built with a manual (code 1) Tranny. That car (built in June) did go to Kiekhaefer, who apparently converted it to a 300B for the next season! How many other C300s were converted by owners to manual shift is anybody's guess. 4. Regarding octane, Hemis (sphereical segment combustion chambers) are more tolerant of lower octane because they don't "squish" the fuel-air mixture as unevenly as other configurations. I can only relate my personal experience of running my 300C in the sixties on Sunoco 190 with no problems. Ran right well too. The car had its heads milled also, as I was at one time going to make it into a 390 HP version since I had one of the Isky cams used in the Daytona Trials. However, sanity prevailed and I bought a stock 300C cam from Chrysler and "did the right thing". 300ly, Gil Cunningham Tallahassee, FL ---------------------------------------------------------- -- Wondering what's for Dinner Tonight? Get new twists on family favorites at AOL Food. 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