H/C swap...Do I need the 9 bolt?
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From: Bishopville, SC
H/C swap...Do I need the 9 bolt? Im about to install the TSP 2.5 5.3l package with the ms3 cam. I also have bought all the supporting mods including a set of Kooks headers and the fast 90/90 setup. Should i save up the money to get a 9 in" rearend before i install all of this or just wait? I am worried that my stock 10 bolt is not going to hold up much longer. Any suggestions?
Last edited by RareBreed0295; Nov 5, 2007 at 12:38 PM. Reason: needed to change 9 bolt to 9"
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From: England UK
It will hold up on the street, sticky tyres on the track will be a different story.
If you put huge amounts of power throgh the back end on the street, they tyres light up, therefore acting as a safty fuse for your rear end.
If you put huge amounts of power throgh the back end on the street, they tyres light up, therefore acting as a safty fuse for your rear end.
you mean 9 inch ? running around on the street on street tires that stock rear should hold up untill you have the funds for a better one. sometimes stock rears break in no time flat and sometimes they last along time.
Well there isn't such a animal as a 9-bolt that I know of. So I'm guessing you mean a 9" rear. In that case it's always gonna be a plus to upgrade get the stock POS outta there.
I'm on my stock rear with my H/C set-up but I only run street tires & make sure they aren't sticky like DR's. I have already broke (1) stock 10-bolt, so for me I just take it easy unless I race from a decent roll.
You should be ok as long as you stay wawy from sticky tires & don't just dump the **** outta it. Now if your a auto car you'll have a little more give than us 6-speed guys.
I'm on my stock rear with my H/C set-up but I only run street tires & make sure they aren't sticky like DR's. I have already broke (1) stock 10-bolt, so for me I just take it easy unless I race from a decent roll.
You should be ok as long as you stay wawy from sticky tires & don't just dump the **** outta it. Now if your a auto car you'll have a little more give than us 6-speed guys.
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From: Bishopville, SC
Yeah sorry, i meant the 9" rear. If i wanted to put 4.10 gears in so i could get the most out of my setup, how would that affect my rearend? I dont know much about changing the gears. I just want to get the most out of the swap.
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A little off topic but, believe it or not - there is a 9 bolt. I think Borg Warner made it and came in some Third Gens. Heard it's stronger than a 10 bolt. Only problem is you can't get very many gear ratios for it and when you do, they're big $$$
That's why this thread caught my attention - Thought someone was building a 9 bolt...
That's why this thread caught my attention - Thought someone was building a 9 bolt...
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Yep that is correct on the nine bolt. The higher performance 3rd gens came with them up through 1989 and it was made by Borg Warner. It is stronger than the 10 bolt but as was said parts cost more. It would bolt right into a 4th gen but it is slightly narrower than the 4th gen 10 bolt.
Get some LCA's so you don't bounce the life out of your 10 bolt from launch.
As far as gearing goes, i think you'll be OK with 3.73 but anything past that you're risking it. Heck, you're risking it w/ 3.73, i just think you'll overclock faster with 4.10's.
As far as gearing goes, i think you'll be OK with 3.73 but anything past that you're risking it. Heck, you're risking it w/ 3.73, i just think you'll overclock faster with 4.10's.
After 4 weeks mine is still alive. Defintely don't dump the clutch, avoid 1st gear rolls (Rolling 10-15 MPH and punching it WOT.) and if you feel any wheelhop at any time let off the gas. I have read a couple of stories of people doing some damage on a nasty 1-2 shift and even one on a 2-3 shift. For now I just stick to roll racing, 45 MPH or higher. I will tell you this, your factory 10 bolt will hold out better than your factory clutch. Ask how I know. 
Yep that is correct on the nine bolt. The higher performance 3rd gens came with them up through 1989 and it was made by Borg Warner. It is stronger than the 10 bolt but as was said parts cost more. It would bolt right into a 4th gen but it is slightly narrower than the 4th gen 10 bolt.
( think ) the ring gear is 7.625" instead of 7.5" not really sure of anything about it since i've never actually seen one.
Im running the stock 10bolt with a girdle and no problems here. To be honest with you, if you put the girdle on the stock 10bolt is fine. even with sticky tires or slicks. Hell my aka Picnic_George who also posts on here hits 150shot out of the hole on the stock 10bolt and all he's got is a girdle. The trick is to keep that rearend from flexing and moving everything out of spec.
On The Tree
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I guess I have a freak 10 bolt. I did help it out with the T/A girdle, Royal Purple. Car puts out 420 RWHP and several launches on DR's and a 150HP shot nitrous and it's fine.
Have a 408 going in right now. I've started saving...
Have a 408 going in right now. I've started saving...
