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Author Topic: gm 7.5 rearend for g / str  (Read 4975 times)
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Stan Back
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« Reply #30 on: June 27, 2012, 02:45:39 PM »

No F in StR.
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mitchell968
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« Reply #31 on: June 27, 2012, 09:48:00 PM »

nothing gets past you guys.
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Frankie7799
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« Reply #32 on: September 21, 2012, 11:22:08 AM »

Question when it comes to the HP you all are mentioning. WHen you say x hp, are you talking at the flywheel or at the rear wheels? Desoto man mentioned the motor in his str not making one hp per cu and yet it ran pretty well at el mo. My 394 SBC that I had in my dragster made 625 at the flywheel. Just makes me curious what a similar motor would run in a 2600 lb str such as Desotos. Obviously that would fall in the B category and at the small end of the range so it wouldnt be knocking on the door of any records. Not trying to hijack the thread Mitch, was just reading along and wasnt sure how you all were figurung hp. 
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« Reply #33 on: September 21, 2012, 07:27:47 PM »

M968  as others on the list will testify---I am not very concerend about how things look---lol
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desotoman
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« Reply #34 on: September 21, 2012, 09:03:28 PM »

Question when it comes to the HP you all are mentioning. WHen you say x hp, are you talking at the flywheel or at the rear wheels? Desoto man mentioned the motor in his str not making one hp per cu and yet it ran pretty well at el mo. My 394 SBC that I had in my dragster made 625 at the flywheel. Just makes me curious what a similar motor would run in a 2600 lb str such as Desotos. Obviously that would fall in the B category and at the small end of the range so it wouldnt be knocking on the door of any records. Not trying to hijack the thread Mitch, was just reading along and wasnt sure how you all were figurung hp. 

Frankie,

Lets just say my motor made one HP per inch at the flywheel (350hp), with your motor it should go approx 197 in my car.

Tom G.
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"Got'Cha" was first run in 1974. Bill Temple entered both 2 clubs in 1976 with records in AA/BGR. At El Mirage 201.79 and Bonneville at 220.

In 1977 Greg Temple started driving "Got'Cha" and entered the El Mirage Dirty 2 club in 1979 @ 201.97. Greg went on to set two records at Bonneville, one in 1981 at 241.848, then in 1991 he set another record at 262.230

Bill and Greg were the first father and son to enter the El Mirage Dirty 2 club. They broke the D/BFR at Bonneville in 1981 @ 241 with top speed of 249. This record still stands today. In 1991 they set the A/BFR @ 262 which was later broke by Duane McKinney.
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« Reply #35 on: September 21, 2012, 10:13:28 PM »


Frankie,

Lets just say my motor made one HP per inch at the flywheel (350hp), with your motor it should go approx 197 in my car.

Tom G.

Tom, I meant to say more than one HP per inch not less sorry, wasnt trying to knock the motor you had. Its good to know what a motor like I had would do in a STR if I decide to go that route. Is that approx 197 at El Mo or the salt?

Frankie
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desotoman
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« Reply #36 on: September 22, 2012, 12:16:52 PM »


Tom, I meant to say more than one HP per inch not less sorry, wasnt trying to knock the motor you had. Its good to know what a motor like I had would do in a STR if I decide to go that route. Is that approx 197 at El Mo or the salt?

Frankie

Frankie,

Don't worry about it, my motor was a piece of junk, cast crank, stock rods, two bolt mains, etc. Just wanted to see what I could do with it. El Mirage is the answer to your question.

Tom G.
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"Got'Cha" was first run in 1974. Bill Temple entered both 2 clubs in 1976 with records in AA/BGR. At El Mirage 201.79 and Bonneville at 220.

In 1977 Greg Temple started driving "Got'Cha" and entered the El Mirage Dirty 2 club in 1979 @ 201.97. Greg went on to set two records at Bonneville, one in 1981 at 241.848, then in 1991 he set another record at 262.230

Bill and Greg were the first father and son to enter the El Mirage Dirty 2 club. They broke the D/BFR at Bonneville in 1981 @ 241 with top speed of 249. This record still stands today. In 1991 they set the A/BFR @ 262 which was later broke by Duane McKinney.
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« Reply #37 on: December 23, 2012, 12:09:50 PM »

Howdy,

have a technical question to ask about running the 7.5in 10-bolt rear at Bonneville.  I'm still waiting on my rule book but going off of the checklist in the rookie guide, I need positively retained axles.  What is the common/recommended way to do this on the 7.5in 10-bolt?  I saw Ford 8in axles and ends listed, is this a cheaper way than the more common 9in housing ends and custom axles?

Thanks,
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Central TEXAS Sleeper
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SPARKY
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« Reply #38 on: December 23, 2012, 12:15:26 PM »

look weird---go fast---put the smallest tires you can that fit the rules---cant go below15" wheels
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WORDS to build by!
"--virtually the entire success of a turbo/engine system lies in thermal managemant."
 Corky Bell   MAXIMUM BOOST

" I am a firm believer in the people. If given the truth, they can be depended upon to meet any national crisis. The great point is to bring them the real facts." A. Lincoln

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« Reply #39 on: December 23, 2012, 06:06:08 PM »

look weird---go fast---put the smallest tires you can that fit the rules---cant go below15" wheels
Not sure I'm following you there, though it is good to know I can't run the stock 14in wheels.  Need to find some 15in steelies.

I thought it would be best to run taller tires to compensate for less than optimal gear availability and the fact the engine I'm planning on using won't rpm over 6000rpm.
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Central TEXAS Sleeper
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1964 Buick Riviera T-type (4.1L Turbo6, SP400; ex 465 Wildcat, ST400 car)

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SPARKY
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« Reply #40 on: December 23, 2012, 07:50:24 PM »

he was in roadster  minimum 15" wheels  the little GM 7.5 has the greatest selection of ratios for LSR  you are going to have to put C-clip eliminators in any way!!  change!!!
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WORDS to build by!
"--virtually the entire success of a turbo/engine system lies in thermal managemant."
 Corky Bell   MAXIMUM BOOST

" I am a firm believer in the people. If given the truth, they can be depended upon to meet any national crisis. The great point is to bring them the real facts." A. Lincoln

agendadocumentary.com
CTX-SLPR
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« Reply #41 on: December 23, 2012, 07:55:47 PM »

he was in roadster  minimum 15" wheels  the little GM 7.5 has the greatest selection of ratios for LSR  you are going to have to put C-clip eliminators in any way!!  change!!!
Do ya'll tend to use the bolt on ones that go on the housing ends and use the stock axles or are you talking a full blown housing end change with new axles and a Ford 8/9in bearing?

My appologies for the hijack off of the orginal question but I thought it was best to put it in the same thread since it's titled with the axle itself.

Thanks,
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Central TEXAS Sleeper
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1964 Buick Riviera T-type (4.1L Turbo6, SP400; ex 465 Wildcat, ST400 car)

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maguromic
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« Reply #42 on: December 23, 2012, 08:14:02 PM »

he was in roadster  minimum 15" wheels 

"The minimum wheel diameter for all Vintage Category vehicles with the exception of / VOT is 14 in ". - page 54, 2012 rule book -  Tony
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SPARKY
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« Reply #43 on: December 23, 2012, 11:18:16 PM »

Thanks for the catch Tony
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WORDS to build by!
"--virtually the entire success of a turbo/engine system lies in thermal managemant."
 Corky Bell   MAXIMUM BOOST

" I am a firm believer in the people. If given the truth, they can be depended upon to meet any national crisis. The great point is to bring them the real facts." A. Lincoln

agendadocumentary.com
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