2SSARME

I still wanna race your pile of ****.

Let skype race yo.

DietCoke

iTrader: (18)

Beats me.

2SSARME

8 second capable?

Spectre86

iTrader: (42)

interesting. definitely looking into a vacuum pump kit now. I had no idea they were worth that kind of power I thought it was around 5-10hp.

How much vacuum? any problems/draw backs?

DietCoke

iTrader: (18)

It pulls ~12 inches wot maxed out (there is an adjuster/vac bypass), but it has an underdrive pulley on the crank. With an overdrive for the pump, it would pull 14-16 inches easily (usually 14in hg is max power). It's a GZ motorsports kit for a vette that I modified to fit a 5th gen. Zero problems or draw backs, other then 10 pounds of extra weight. I wouldnt expect the rotor to last more then 25000 miles (you have to rebuild it), so it's probably not super daily driver friendly. (I only put 4k a year on the car)

DietCoke

iTrader: (18)

Maybe with more tire and 100 pounds of weight out. Waiting on the BMR/wilwood 15" kit...

2SSARME

Do you still have OEM hood? Are you allowed to run cars down the track in the US without a hood on?

Sticks n Stones

He has the stock hood on it.

Thing is loud btw: the videos do it NO justice! I thought my ears were going to bleed when he passed me during our race. And my windows were only down a inch! I'd imagine it is loud enough to throw off a stick shift drivers rythm as it surely distracted me from scratchin' my sack during our race. Hate being distracted when I'm doing that.

Spectre86

iTrader: (42)

http://www.gzmotorsports.com/SPVPK-L...-pump-kit.html

that one?

I dont daily drive mine either. 4-5k a year is about right. even then, i cant imagine the rebuild being much?

Got a pic of it in the engine bay? Im blown away, why dont more people use these?

DietCoke

iTrader: (18)

Yep, that's the one. Piggybacks the stock tensioner with an outer cog drive (bonus is you get a nice alum tensioner pully) which drives the pump. IDK why more people dont use them, but they're really only particularly useful if you turn stupid high rpms, OR have a larger (4.100+) stroke motor. The more stroke/rpms, the more power they can make, because there is more inherent crank pressure in that type of setup

Spectre86

iTrader: (42)

my 427 is a 4.1 stroke, 11.75:1 Lunati Voodoo 243/255 .651/.651 112+2.
I would assume if you can pick up 40whp from that, then I should be able to get atleast half that. Im just still shocked they make this kinda power.

Looks like ill be picking one up soon

btw, sorry, didnt mean to derail your thread.

1_MEANZ28

iTrader: (4)

Sick cars

2SSARME

How much has this build cost your wallet so far? Without the nitrous? And with it?

Sticks n Stones

Don't be so surprised, all good tuners know about it. My builder (ellis) told me not to use one on my car because of my putting 15-20k miles a year on it. Wish they had a clutch like the AC unit does that could be rigged to only come on at say 5k rpms or WOT. My 402 with 11.5 CR should pick up 20rwhp with a pump according to him.

DietCoke

iTrader: (18)

Less then you'd think. Doing 99% of your own work and labor saves a lot of money.

big hammer

wait.... a vacuum pump? really?

2SSARME

More or less than $25k (what I have spent on parts and labor so far).
I'd just like to compare what I have spent overseas getting others to do mechanic work and what you have spent doing your own ****.

HioSSilver

iTrader: (8)

HHmm I wonder how this would work on a bolt-on ls6 even if I only got 1/2 that it could put me at about 450 dynojet power.

Heater

I've been told that they work the best if the pistons are gas ported.

That's one of the things that I wish I had done when I was building my engine.

DietCoke

iTrader: (18)

On the engine itself? Well under 10k. Even less still, if you count the parts I sold off the stock engine