hOW MUCH POWER WILL A 9" HOLD
 

I'm building a 1000 hp blown bbc for my 67Camaro. I'm a little concerned about how much power I can put to the rear end. It's a 9" Ford with Strange 35 spline axles and Richmond gears. Car ways 2760. Tires are 15" x 15" x 37" tall. Thanks.

Your axles are fine. and the rear will be fine IF :
1- Its properly braced for insurance.
2- Good center section preferably with LARGE pinion yoke
3- good pinion bearing support

and alot of people don't do this but i have on all my cars is a Billet SLIP Yoke

YOU KNOW I NEVER THOUGHT ABOUT A BILLET SLIP YOKE
BUT I HAVE NEVER HAD OVER 450 HORSES IN MY MUSTANGS

THE 9" IS VERY STRONG :D :D

LIVELY

37 inch tall tire? wow. Talk about stretching the wheel openings.

he's gotta be speaking of the roll out (growth)..lol....

I don't know much 'bout all that. :lol:

If I remember correctly when the pro stock cars had around that amount of HP they were sucessfully running 35sp axles.Blown BB torque I would imagine be more than these N/A engines.What does your axle manufacturer think/say?

its how much the tire will grow in circumference when under full throttle ( watch back tires on Top fuel cars)

this is what you need to really be concerned with when buying tires..you can actually have a 33 inch tall tire with a shorter circumference (growth,rollout) than a 32 inch tall tire..
example..i have a M/T 33X17 on my camaro..its considered a short tire cause the roll out (growth) is 101 inches . i went with this short growth tire cause its an all motor car with a 500 gear and i wanted to turn it a little more.
my 14x32's has close to 103 roll out...about a 200 rpm difference thru the traps than my short roll out tire

my 16x33's on my Old vette had a 105 inch roll out ( growth)

also the reason Radial tires ( now have radial slicks) are so fast cause they have no growth to them..they are fast .fast..but more trick to hook :x



next time you buy tires pay close attention to that..also be sure to tell whomever you buy the tires from that you want an even measurement on your tires and check the circumference when you get them...

Thanks for all the replies. Maybe I measured the tires wrong. I'll check. These tires were on the car when I bought it. It's all set up for Nitrous but I'm not a big fan of Nitrous. It's fine for anybody who likes, I just prefer a blown car with the same hp. I'll check out the yoke as well.

rear end
 

i wouldnt worry about the axels they are more then sufficient, the housing is what i would be worried about, according to the chassis shops if you are making more then 700 horsepower you should step up to a molly fab rearend, i know there are alot of people running stock housings and getting away with it but if it was me i would step up to a molly one so i can sleep at night, also if you do stay with the stock housing i would make sure you have a back brace on it,, good luck...

A9" will live fine with 35spl. axles, BUT does need: back brace and a internally braced housing!! Im talking about the housing the rest was already said! My 9" has internal braces put around the inside and all TIG welded !!!!! EVERYTHING tigged! it matters, and the 4link is braced to the housing and a brace between the 4link itself D.R.

imo,put a dana 60 in it. i would put a 9" in anything over 2500lb again guys jmo

Why ?

i agree with bjuice---------WHY A DANA 60???????? :shock: :shock: :shock:

you don't have to spend half the $ & they are still stronger than a 9". i have seen guys spend thousands on 9" only to break them time after time. i see at least two or three a year get broke in heavier cars,i'm not saying their built or braced right i'm just saying i've seen alot of $1300 to$1500 third members get ruined and it usually take the drive shaft & tranny with.again guys this is jmo,i think 9" rear are the only way to go for tube cars & dragsters.

they wiil hold alot if you have good guts inside i have a friend that has a 540ci big block mopar in a 23t hard tail alterd about 890hp and we havent had any problams yet

Everyone has their own experience. I ran a 9" in a 3000 lb street ElCamino with 31 spline axles, M/W aluminum bolt thru center section but the housing was stock. NO modifications. Very stout 700+hp small blk and 300 in the fog, 1.30 60', 5.62 1/8th. Not to say there won't be, but so far no problems but axles are showing some twist.

HOW LUCKY DO YOU FEEL...

I have a good friend that running a alcohol funnycar for match races. He says he's putting out 1500 to 1800 hp. running a 9" ford. All Mark Williams stuff.

just saw my friends 3200 lbs nova,with a 540 toss all the parts out of his $2000, 9" today. i.m.o. a 9" is only as strong as the money you shovel at it. as stated on another forum on hear,build it with more over kill, than the h.p. you have and it will live...back to a dana 60(that is a little heavy) will hold tons of h.p. with a good spool and axles,just like the are. again,J.M.O.