3.5 or 3.4 on ic/mag standard

[cmark]

i thought i read on here that the non ic/mag came with a 3.5 pulley and the ic/mag comes standard with the 3.4...i just looked at my ic/mag and it has a 3.5 on it...no wonder i am barely getting 5#s of boostoes anybody know if i am suppose to have the 3.4...if so something is strange

[vettewreck]

you are suppose to have a 3.4 if you have the LS1 I believe you get the 3.5 if you have a LS6 but I could be wrong.

[cmark]

i have an 03 z06

[BamaZO6]

Just got my IC'd Mag and it came with the 3.5. I've got an '02 ZO6.

[Wingnut]

Originally Posted by BamaZO6

Just got my IC'd Mag and it came with the 3.5. I've got an '02 ZO6.

Is it stamped on the pulley?

[BamaZO6]

Just looked, it has 3.5 written in sharpie marker on the plastic cover, but looked at the pulley and it is stamped 3.200?

[Wingnut]

Originally Posted by BamaZO6

Just looked, it has 3.5 written in sharpie marker on the plastic cover, but looked at the pulley and it is stamped 3.200?

Figures. Thanks for checking. I'm going to see what mine says and go from there to order a different size.

[BamaZO6]

If you would, let me know what # is stamped on your pulley, thanks

[Wingnut]

Originally Posted by BamaZO6

If you would, let me know what # is stamped on your pulley, thanks

I will although it will be early next week until I see my car again...it had a cam and 3:90's installed BUT had a bad set of gears installed...so they are being replaced.

[BamaZO6]

Wingnut I called Magnacharger and asked about the pulley. He said they come with a 3.5 pulley and that I had read something else. He also said that the 3.4 comes on the other LS1 applications because of their lower compression ratio, 10:1 and ours is 10.5:1. He said it would run lean and have lower boost b/c of the LT headers. He recommended that we tune it b/c the tune it comes with is generic even though you fill out a chip sheet to let them know your mods.

[EFI-1]

Mine says 3.500

[Black_Magic]

My LS1 non-intercooled came with 3.5. When I upgraded to I/C it had a 3.4 but I replace with a 3.2 and am getting about 6.8-7.0 #s of boost.

George

[Wingnut]

Originally Posted by BamaZO6

Wingnut I called Magnacharger and asked about the pulley. He said they come with a 3.5 pulley and that I had read something else. He also said that the 3.4 comes on the other LS1 applications because of their lower compression ratio, 10:1 and ours is 10.5:1. He said it would run lean and have lower boost b/c of the LT headers. He recommended that we tune it b/c the tune it comes with is generic even though you fill out a chip sheet to let them know your mods.

Thanks...just saw this.