69 diff size? Backspace question - Team Camaro Tech
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post #1 of 8 (permalink) Old Mar 10th, 09, 04:16 AM Thread Starter
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69 diff size? Backspace question

Heres my plan.... 18 x 10 rears with 5inch b/s ..Narrow diff by 1/2 each side.move shox inboard.
question , will this work? what is the stock diff measurement on a 69?
Is there anything else im missing ?


thanx

RHD 69' 8 STACK INJECTED 383,FAST ECU, TREMECT56 6 SPEED, ATS ,SPEEDTECH, QA1s, HOTCHKIS, RUSHFORTHS , MOSER POSI 3.7, MAGNAFLOWS, ETC ETC


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post #2 of 8 (permalink) Old Mar 10th, 09, 10:26 PM
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Re: 69 diff size? Backspace question

What is the width of your rear axel flange to axel flange? i have fit a 10" wide rim without moving my shocks inboard. The stock measurement should be 60"

John

69 Coupe: Forged Hydraulic Roller 383, Holley HP 750 DP, AFR195s, RPM Air Gap, Borg Warner T-56, Hooker Super Comp 1.75", Ford 9" with custom Moser axels, 3.89 Posi, MSD digital 6, Hotchkis springs, 4WDB, [email protected] on bald Nitto 555's
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post #3 of 8 (permalink) Old Mar 10th, 09, 10:27 PM
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Re: 69 diff size? Backspace question

What is the width of your rear axel flange to axel flange? I have fit a 10" wide rim without moving my shocks inboard. The stock measurement should be 60"

Sorry about the double post my computer is wacked

John

69 Coupe: Forged Hydraulic Roller 383, Holley HP 750 DP, AFR195s, RPM Air Gap, Borg Warner T-56, Hooker Super Comp 1.75", Ford 9" with custom Moser axels, 3.89 Posi, MSD digital 6, Hotchkis springs, 4WDB, [email protected] on bald Nitto 555's
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post #4 of 8 (permalink) Old Mar 11th, 09, 06:35 AM Thread Starter
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Re: 69 diff size? Backspace question

Quote:
Originally Posted by johnny5 View Post
What is the width of your rear axel flange to axel flange? i have fit a 10" wide rim without moving my shocks inboard. The stock measurement should be 60"
John, mine is standard width rear. With moving my shox in i wanted to add some lowering blocks to rear , and as it is now the rim is a poofteenth off hitting edge of shock mount plate. I thought i could gain more dish by changing backspace too.

Gav

RHD 69' 8 STACK INJECTED 383,FAST ECU, TREMECT56 6 SPEED, ATS ,SPEEDTECH, QA1s, HOTCHKIS, RUSHFORTHS , MOSER POSI 3.7, MAGNAFLOWS, ETC ETC


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post #5 of 8 (permalink) Old Mar 11th, 09, 08:29 PM
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Re: 69 diff size? Backspace question

I think you will need 5.75" of backspace with a 10" rim on a std. width rear. If you only go 5" you won't be able to lower it that much without hitting your fender ( it will stick out ). You are right about using lowering blocks, the shocks could interfere with the wheels. What about lowering springs?

John

69 Coupe: Forged Hydraulic Roller 383, Holley HP 750 DP, AFR195s, RPM Air Gap, Borg Warner T-56, Hooker Super Comp 1.75", Ford 9" with custom Moser axels, 3.89 Posi, MSD digital 6, Hotchkis springs, 4WDB, [email protected] on bald Nitto 555's
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post #6 of 8 (permalink) Old Mar 12th, 09, 02:24 AM Thread Starter
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Re: 69 diff size? Backspace question

Quote:
Originally Posted by johnny5 View Post
I think you will need 5.75" of backspace with a 10" rim on a std. width rear. If you only go 5" you won't be able to lower it that much without hitting your fender ( it will stick out ). You are right about using lowering blocks, the shocks could interfere with the wheels. What about lowering springs?
John , my rear leafs are the hotchkis 1 1/2 but needs to go down another 1 1/2 . With the back space, if you read my original post i wanted to narrow the diff by 1/2 each side to compensate for the 5inch b/s.
I will maybe get these new leafs reset instead of blocks, neater and safer.

Gav

RHD 69' 8 STACK INJECTED 383,FAST ECU, TREMECT56 6 SPEED, ATS ,SPEEDTECH, QA1s, HOTCHKIS, RUSHFORTHS , MOSER POSI 3.7, MAGNAFLOWS, ETC ETC


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post #7 of 8 (permalink) Old Mar 13th, 09, 09:35 AM
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Re: 69 diff size? Backspace question

I see where you say narrow rear .5". That has to be expensive, just to gain 3/4 of an inch dish. If you have seen a 10" wheel with 5.75" backspace it still looks pretty good.

John

69 Coupe: Forged Hydraulic Roller 383, Holley HP 750 DP, AFR195s, RPM Air Gap, Borg Warner T-56, Hooker Super Comp 1.75", Ford 9" with custom Moser axels, 3.89 Posi, MSD digital 6, Hotchkis springs, 4WDB, [email protected] on bald Nitto 555's
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post #8 of 8 (permalink) Old Mar 13th, 09, 03:11 PM Thread Starter
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Re: 69 diff size? Backspace question

yep im hearin ya , its prob not worth the added expense
Thanx for your input

Gav

RHD 69' 8 STACK INJECTED 383,FAST ECU, TREMECT56 6 SPEED, ATS ,SPEEDTECH, QA1s, HOTCHKIS, RUSHFORTHS , MOSER POSI 3.7, MAGNAFLOWS, ETC ETC


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