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rod · 12-10-2010, 09:15 PM

back to my original posted question. in my old AHRA stock class car ['56 Chevy Nomad] i have a 9" ford which was legal under the then AHRA rules. i have about $1500 dollars in that unit. now in order to run under the new NHRA stock class i would have to run a 12 Bolt, as there is nothing else worth consideration. it is very possible to run a 265 with a stock 12 bolt housing with welded tubes [no need for a fabed up unit] and then lots of $$$$$ to duplicate exactly what i have now. and again the 9" looks just like a '56 drop out, whereas a 12 bolt looks nothing like the original. NHRA is so picky about a piston # and then lets a racer place something completely different for a rear axle. i don't get it. and i am ticked.
suppose for a minute, since the AMC subject has been brought up, that racer A spent big bucks to put a dana 60 in his AMC and then NHRA said only AMC rears would be legal. now you have to duplicate another rear to get exactly where you just were. and have a rear with almost no resale value [being car specific].
it is entirely possible to make a '56 car axle housing into a race unit. 30 spline MoPar side gears in the posi and big ford bearing ends with big race axles and some type adaption for brakes and several mods to the case. [i still have my Jere Stahl 5.57 with all that done]. in the end i would still have a smaller dia. ring gear, and lots of $$$$. what's the purpose
now let me get on my soap box [wasn't i just there?]
the '57-64 Olds/Pont. rear was just BIG, not strong. in a popular hot rodding survey, in a list of the top 10 rears, usable for drag racing, that rear came in 7th.
the 9" fords uses about 4 more horsepower than a 12 bolt. using conventional gear lube. maybe when looking for that last hundredth, that might make a difference. however you can loose more than than by not having the lube up to operating temp.

all in all, if NHRA says rears axle updates in mfgr' only, then so be it. maybe some guys will build new '56 chevy stockers and not have to worry about my problem. i do not have to run under their rules. that is my choice. in the end i wonder who really looses. NHRA has crapped on door slammers for way to long and are now crying for help with car entry. maybe they will change with enough protest. i will start monday.

i do appreciate all the input.
rod in AZ

12-10-2010, 09:15 PM	#5
rod Member Join Date: Dec 2009 Location: Kingman, NW AZ. in the middle of the longest stretch of Route 66 Posts: 315 Likes: 0 Liked 20 Times in 15 Posts	Re: stock elimator rear axle? back to my original posted question. in my old AHRA stock class car ['56 Chevy Nomad] i have a 9" ford which was legal under the then AHRA rules. i have about $1500 dollars in that unit. now in order to run under the new NHRA stock class i would have to run a 12 Bolt, as there is nothing else worth consideration. it is very possible to run a 265 with a stock 12 bolt housing with welded tubes [no need for a fabed up unit] and then lots of $$$$$ to duplicate exactly what i have now. and again the 9" looks just like a '56 drop out, whereas a 12 bolt looks nothing like the original. NHRA is so picky about a piston # and then lets a racer place something completely different for a rear axle. i don't get it. and i am ticked. suppose for a minute, since the AMC subject has been brought up, that racer A spent big bucks to put a dana 60 in his AMC and then NHRA said only AMC rears would be legal. now you have to duplicate another rear to get exactly where you just were. and have a rear with almost no resale value [being car specific]. it is entirely possible to make a '56 car axle housing into a race unit. 30 spline MoPar side gears in the posi and big ford bearing ends with big race axles and some type adaption for brakes and several mods to the case. [i still have my Jere Stahl 5.57 with all that done]. in the end i would still have a smaller dia. ring gear, and lots of $$$$. what's the purpose now let me get on my soap box [wasn't i just there?] the '57-64 Olds/Pont. rear was just BIG, not strong. in a popular hot rodding survey, in a list of the top 10 rears, usable for drag racing, that rear came in 7th. the 9" fords uses about 4 more horsepower than a 12 bolt. using conventional gear lube. maybe when looking for that last hundredth, that might make a difference. however you can loose more than than by not having the lube up to operating temp. all in all, if NHRA says rears axle updates in mfgr' only, then so be it. maybe some guys will build new '56 chevy stockers and not have to worry about my problem. i do not have to run under their rules. that is my choice. in the end i wonder who really looses. NHRA has crapped on door slammers for way to long and are now crying for help with car entry. maybe they will change with enough protest. i will start monday. i do appreciate all the input. rod in AZ