Jack both wheels up --turn one wheel--if the other one turns the same way- it is a sure-grip---if it turns the opposite way -it is not Elmer To: ram300@xxxxxxxxxx; thelastbestgenius@xxxxxxxxxxx; lettercars@xxxxxxx; chrysler300@xxxxxxxxxxxxxxxxxxx: cotejohnr@xxxxxxxxxxx: Mon, 3 Dec 2007 19:28:01 -0500Subject: Re: [Chrysler300] Sure Grip Rear - 300C ? As follow-up to Owen's comments, is there a externally identifiable characteristic that confirms a Sure-Grip is in there?Is there a difference in the differential housing that quickly identifies these Sure-Grips?John-----Original Message-----From: Owen Grigg <ram300@xxxxxxxxxx>To: 'christopher beilby' <thelastbestgenius@xxxxxxxxxxx>; lettercars@xxxxxxx; chrysler300@xxxxxxxxxxxxxxxxxxx: Mon, 3 Dec 2007 4:09 pmSubject: RE: [Chrysler300] Sure Grip Rear - 300C ?Does the diff centre on your car have a stamping on the pad below the fillerplug on the passenger side? This is where the ratio is stamped, are thereany other letters or numbers on it? Or is there an aluminum tag around thefiller plug? Was your car a 399 motor code with the "chassis package"? Owen_____ From: christopher beilby [mailto:thelastbestgenius@xxxxxxxxxxx] Sent: Tuesday, 4 December 2007 9:37 a.m.To: Owen Grigg; lettercars@xxxxxxx; darrin.bailey@xxxxxxxxxxxxxxxx;chrysler300@xxxxxxxxxxxxxxxxxxxxxx: RE: [Chrysler300] Sure Grip Rear - 300C ?My Dec 1956 build Daytona "Flying Mile" car/300C has a limited slip difffitted, however at this stage I do not know if it is factory fitment. Afterthe car ran at Daytona in early Feb 1956, Briggs Cunningham (a la theCunnigham sports race car Le Mans attempts), took the motor and car to setthe supercharger mixtures correctly that limited/wrecked Daytona speeds tojust over 150mph, and set them up on his engine dyno, reinstalled it and didwhatever mods he felt necessary, whereafter the car ran supposedlyundefeated at various eastern states drags for some period.The car has seemingly all other corrrect factory equipment, orig numberseverywhere, however Cunningham would have been savy enough to fit limitedcentre diff if car did not have it then, even to it still having one of onlytwo known special build superchargers that I believe Cunningham was behindseeing built, one off, uprated to seeming so rare race specs.Whatever, either way, the diff centre would have to have been availableeither Dec 1956, or mid 1957?!Christopher in Australia where some southern parts just had hottest Novembersince white settlement/arrival in the 1800s_____ To: lettercars@xxxxxxx; Darrin.Bailey@xxxxxxxxxxxxxxxx;Chrysler300@xxxxxxxxxxxxxxxxxxx: ram300@xxxxxxxxxxxxxx: Mon, 3 Dec 2007 17:48:07 +1300Subject: RE: [Chrysler300] Sure Grip Rear - 300LHi all,I believe there was some talk to suggest that Kiekhaefer wasusing/experimenting with limited slip rear axles in his race '55-6 300'stoo. Owen -----Original Message-----From: Chrysler300@ <mailto:Chrysler300@xxxxxxxxxxxxxxx> yahoogroups.com[mailto:Chrysler300@ <mailto:Chrysler300@xxxxxxxxxxxxxxx> yahoogroups.com]OnBehalf Of lettercars@aol. <mailto:lettercars@xxxxxxx> comSent: Monday, 3 December 2007 4:34 p.m.To: Darrin.Bailey@ <mailto:Darrin.Bailey@xxxxxxxxxxxxxxxx> scc.virginia.gov;Chrysler300@ <mailto:Chrysler300@xxxxxxxxxxxxxxx> yahoogroups.comSubject: Re: [Chrysler300] Sure Grip Rear - 300LDarrin and All:The 300L was definately available with the Sure Grip limited slip rear axle----all year long. The info I have says it was standard epuipment, butI think I will defer to 300L model year consultant Don Warnaar on that one.Sure Grip was introduced in 1958 and was an option from that year on. 1957390HP 300C performance package included a "limited slip" differential as well. Idon't think I would put too much trust in the accuracy of that book!In a message dated 12/2/2007 9:11:16 PM Eastern Standard Time, Darrin.Bailey@ <mailto:Darrin.Bailey@xxxxxxxxxxxxxxxx> scc.virginia.govwrites:The 300 Group:I have a question about the availability of the sure grip differentialfor 1965 Chrysler (and prior years). Per the Chrysler 300 SeriesPedigree, Power and Performance since 1955 hardback book from VelocePublishing, it states on p. 119 in the chart of 300-L options that theSure Grip option code 596 was available March 1, 1965. Does this seemcorrect? Does this in fact mean Chrysler did not offer this type rearuntil after mid-production year? I thought Chrysler offered the suregrip for years prior on 300's? Does anyone know when the first wasoffered? I even thought a 300-L that I previously owned with a 10/20/64build date had a sure grip rear and my current 300-L, I believe hassure-grip with a build date of 12/28/64? Could this just be a misprintin the book? 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