IRS in a fox bird???? test fit pics

Topic: IRS in a fox bird???? test fit pics (Read 16941 times) previous topic - next topic

IRS in a fox bird???? test fit pics

July 15, 2006, 07:40:05 PM

you saw it here first...
before:

after:

its not completely bolted in yet, but it is where it belongs. fits in the car with only minor tpuppies. i will attach the rear pickups thru the rear frame rails right where they sit.
i rechecked the rear axle centerline, and on the side i assembled it is 1/2" forward of stock. i still need to assemble the other side as well to check the centerline. since there was a 1/2" difference side to side in the stock rear axle centerline, the other side may be closer due to this side being the long side originally. unless it is skewed badly, im not goin to worry about the change in wheelbase. as you can see in the wheel pics there is plenty of room in front of the wheel still.

IRS in a fox bird???? test fit pics

Reply #1 – July 15, 2006, 08:52:00 PM

Looks like it should fit in there pretty well. You're going to sleeve the bolts that go through the frame right?

I don't think it would be that difficult to move it back a touch either. You may want to anyway to avoid any odd issues with spring/shock mounting, since they are the 3/8-1/2" farther back in the car.

IRS in a fox bird???? test fit pics

Reply #2 – July 15, 2006, 09:32:04 PM

i guess i should have stated "at this point" im not gonna worry about it, hehehe. if i see any issues with parts alignment as it comes more together, then it will be a different story. movin it back will cause alot more issues with interference with the tank mounting. i already notched the right tank strap mount pad. the tank is offset. i am lookin into options for clearence there as well since the carrier hits the tank on the pass side.
im actually plannin on welding threaded spuds thru the rail. they are .75x4.25 chro-moly and accept 1/2x20 bolts. that way i can weld em on both sides of the rail, and jus thread bolts in rather than put a nut on the backside.
since your here, chuck...where is the length difference in the shock mounting? is the upper pickup further from the axle? wonderin if i will need to fab an upper mount to lower that point to make use of the cobra bilsteins i have. guess ill probly know as soon as i test fit a shock, hehehe

IRS in a fox bird???? test fit pics

Reply #3 – July 15, 2006, 09:38:43 PM

For this I would fab up something up top. Not sure of the overall difference in length of the IRS shocks vs the Tbird stuff though.

IRS in a fox bird???? test fit pics

Reply #4 – July 16, 2006, 05:07:23 AM

Cobra IRS?

IRS in a fox bird???? test fit pics

Reply #5 – July 16, 2006, 07:55:04 AM

Quote from: CougarCoupe88

Cobra IRS?

Yes

IRS in a fox bird???? test fit pics

Reply #6 – July 16, 2006, 09:11:53 AM

sweet...nice job! saw this a couple years ago in a fox stang. mmff, or 5.0(dont remember wich) has a nice little article on this swap as well this month.

IRS in a fox bird???? test fit pics

Reply #7 – July 16, 2006, 10:50:39 AM

Is that thing as heavy as everyone makes it out to be?

IRS in a fox bird???? test fit pics

Reply #8 – July 16, 2006, 10:56:12 AM

i havent put one on a scale, but it is heavier than a live axle.
then there are arguments for sprung vs. un-sprung weight, etc.

then theres my justification....foxes are nose heavy anyhow.....its ballast :flame:

IRS in a fox bird???? test fit pics

Reply #9 – July 16, 2006, 11:22:02 AM

Nice ballast man...lol. Seriously though, that looks really good...I've been thinking about a Cobra IRS in one of our cars...not that I wanted to do it, but just wanted to see it done...my wish has come true..lol...good work man!

-Don

IRS in a fox bird???? test fit pics

Reply #10 – July 16, 2006, 12:53:36 PM

that thing is gonna handle like your floating on air man..

im definatly watching this car

IRS in a fox bird???? test fit pics

Reply #11 – July 16, 2006, 01:09:26 PM

well im hopin more for handling like its forcibley attached to the ground :D

IRS in a fox bird???? test fit pics

Reply #12 – July 16, 2006, 01:27:23 PM

that would be nice... those cobras hook real nice... but arent they just a wee bit heavier in the back than our foxes anyway?

IRS in a fox bird???? test fit pics

Reply #13 – July 16, 2006, 01:34:28 PM

i havent scaled my car yet, so im not sure where the birds are for balance.
the 00R i had on the scales was 3580lbs total and 56/44 split

IRS in a fox bird???? test fit pics

Reply #14 – July 20, 2006, 01:10:46 AM

Would there be any major benefit to doing this? I mean I have heard alot of cobra owners take this out to replace it with a solid axle due to wheel hop, more weight and broken half shafts. I have thought of doing this more than once but all I hear is bad things about the Cobra IRS. What are the pluses of doing this?