Y87 1/4 mile

[W68Firebird97]

Re: Y87 1/4 mile

i had a 97 w68 y87 bird stock i went 15.3 @ 87

after switching to a 1 piece DS and a home made CAI i went 14.8 @ 92 on street tires. my best mph ever was a 94.xx


-brandon


i said I HAD 97 W68 Firebird Y87 they came w/ a 2 piece DS.






__________________________________
00 black t/a m6
Stock Internals=11.81 @ 117 1.59 343hp/349tq
Cam Only=11.29 @ 120 1.55 418hp/380tq
http://www.cardomain.com/id/demonicbird00
[/QUOTE]

[Smoke Panther]

Re: Y87 1/4 mile

quoted from 1999 section here http://tech.firebirdv6.com/general.html

that's wrong, because i definately had to fight a 2-piece when i switched to my aluminum on my '99

[FireBird_Fr3ak]

Re: Y87 1/4 mile

Well i have a 1-piece, and it is stock i know it, it even has the little numbers on it. But i have a y87 so who knows, maybe thats was part of the package...

[W68Firebird97]

Re: Y87 1/4 mile

they went from a 2piece DS to a 1 piece in either 98 or 99 i cant remember.

-brandon

[FireBird_Fr3ak]

Re: Y87 1/4 mile

its 99 ive double checked on 3 sites now...

[97rs4life]

Re: Y87 1/4 mile

some 99s had the 2 piece and some had the 1 piece. They were in the process of converting over. Some of the overseas cars also had to have the 2 piece for vibrations at high speeds on the highways over there.

Overall though the alum. driveshaft swap from a 2 piece usually nets .2 in the 1/4

[FireBird_Fr3ak]

Re: Y87 1/4 mile

Would it be worth it to swap the steel with alum?

[97rs4life]

Re: Y87 1/4 mile

Would it be worth it to swap the steel with alum?

some but not as much as 2pc to 1pc. The alum is steel slightly lighter than the steel 1 piece

Thing with the steel is that it is stronger than the alum so if you go with some big power in the future, then less chance of snapping it.

[Shodown]

Re: Y87 1/4 mile

The biggest difference in the driveshaft is the weight: less rotational mass = faster car.

2 pc...32lbs.
1 pc steel....15lbs.
1 pc alum....11lbs.

[FloydSummerOf68]

Re: Y87 1/4 mile

the 1 piece steel is definatley more than 15 lbs...I would've guessed in the low 20s...its pretty stout.

[Shodown]

Re: Y87 1/4 mile

You are right Shawn, the 1 pc steel is 16 pounds, my bad :p

BTW, the alum is 11.5, that was a typo in my last post.

http://www.bfranker.badz28.com/fbody/weights.htm

[FloydSummerOf68]

Re: Y87 1/4 mile

Hm, it still seemed heavier than that.
I have mine at our shop, I'll weigh it.

[W68Firebird97]

Re: Y87 1/4 mile

when i weighed them, my stock 2 piece was 27 lbs. the stock steel from the lt1 was 17lbs and the ls1 ds is 10lbs.

[Bird_Of_Prey]

Re: Y87 1/4 mile

yawn, y87 is better than not having y87, case closed.

Not true. My non-Y87 car came with 3.42 and lsd and would whup Y87 cars. 14.6x with no intake and a LS1 muffler.

[FireBird_Fr3ak]

Re: Y87 1/4 mile

Not true. My non-Y87 car came with 3.42 and lsd and would whup Y87 cars. 14.6x with no intake and a LS1 muffler.

you still had to update your car to beat it, id rather have a Y87 than non with 3.42's and LSD. It has the tighter steering and dual exhaust already...
And im calling :bs: on a 14.6 with just a muffler and no intake...till i see a slip