View Full Version : Engine: Different cylinder heads on the Studebaker Champion L head 6.

08-18-2013, 11:48 PM
I'm posting this for a SDC lifetime member who has moved to rural Missouri where the Internet service is terrible. I will try to phone him with the answer, but he says even the land lines in Troy, MO are unreliable. Anyway, he has 4 Studebaker Champion L-head 6 cylinder engine heads he wants to sell, but he noticed they come in 3 types. When the heads are laid upside down, he noticed the cylinder shapes in the heads are all at least a half a circle, but the remaining halves can be square, heart shaped or round in shape. He wants to know which half shapes, the round, square or circle correspond to which years of Champion 6? This way he knows which of the cylinder heads fits which years of Champion 6 for prospective buyers. Thanks! Sincerely, Ed

08-19-2013, 03:34 PM
Tell your buddy to turn the heads over and write down the casting numbers he will see on top, then post them here. The early ones will have six digits, probably in the 400,000 to 600,000 range. The 8:1 compression heads used on the Larks will have 7 digits starting with a 1. We can match the number range to approximate years, though casting numbers and catalog part numbers are rarely the same.

08-19-2013, 06:25 PM
Dear Gary, Thanks! I'll call Wally tonight and get this information to post here ASAP. Thanks again! Sincerely, Ed

08-19-2013, 07:50 PM
Dear Gary, Wally gave me these numbers over the phone for each of the four Champion 6 cylinder heads, head #1: 526989, head #2: 529278, head #3: 1547738, and head #4: 536180. Wally gave me other letters and numbers that were below each of these casting numbers if needed. I'll start with just the casting numbers for now as that is all you felt was needed to identify the appropriate motor block years each of these heads fits. Wally said to thank you on behalf of him too! Sincerely, Ed

08-19-2013, 08:33 PM
Dwain Grindinger: Can you jump in and decode these? :confused: BP

Dwain G.
08-19-2013, 11:43 PM
526989- 1950 models up to engine #704111. 529278- late 1950 through 1954. 536180- 1955 through 1957. 1547738- 1959 (superceded by 1549218). I should add that these casting numbers are also the part numbers in the chassis parts book! This is somewhat of an oddity because Studebaker hardly ever did this.

08-20-2013, 03:06 AM
Thanks so much gentlemen, I'll get this information to Wally ASAP! We in the MO/IL Gateway SDC Chapter are hosting the SDC Upper Mississippi Valley Zone Meet this weekend in St. Louis, MO (actually in St. Louis County in Maryland Heights, MO.) We hope to meet many of our old SDC friends there this weekend and the weather should be perfect! Thanks again! Sincerely, Ed

David Conwill
11-24-2013, 06:09 PM
The 8:1 compression heads used on the Larks...

Will a Lark head bolt into a 1950 block?

11-24-2013, 08:27 PM
The 1549218 head is an 8:1 compression version. It will add a few horsepower to the old engine which probably had 6.5:1 or 7:1. I have one on the '48 block in my M5 truck. Note, however, that you will need to have machine shop drill a larger hole where the temperature sensor goes and tap it for the pipe fitting that holds the temp sensor well. I did get it done with a big hand-held drill, but almost broke my arm when the bit caught in the hole. Use a milling machine or big drill press. The later cars had an electrical temperature sensor that was smaller. There is enough metal in the head to allow drilling and tapping for the larger fitting.

Head 1547738 is also 8:1, don't know the difference between it and 1549218.

David Conwill
11-25-2013, 05:54 AM
Thanks, that's what I was hoping to hear! :-)