FriedRicer

for someone who has to do mods in phases, what would be the disadvantages of starting with the YSI on the stock block (LS6)

first phase would be A&A YSI, ECS blower cam, meth kit

second would be cartek flip drive, forged 346.

what pulley combo would tame the YSI down until I could get some pistons and rods in there?

I know on the stock block, i couldnt get the Ysi into its efficiency range, but would it be a dog at low boost?

TheCartel

You'd probably have to do a combination of pulley and restrictor plate. My vote is go with a T-trim for now.

ajg1915

Why not start with doing a built short block and getiing the motor put together and then move on from there, to clutch and drive train and then to the blower.

FriedRicer

that would be the smart way of doing it, but no fun,

FriedRicer

I'm guessing by the lack of response, its a dumb idea.

ajg1915

It's not a dumb idea, but you need to figure out what your ultimate goal is and then put together a plan.

It's kind of hard to build on something without a foundation.

TRIZ

I think it's an excellent strategy. With a restrictor plate, it wouldn't be a dog down low either.
Many have utilized this strategy. Actually, ECS pushes this idea all the time. ECS says you don't have to continually upgrade to a bigger blower, etc., everytime you want more power. One and done.
A lot cheaper to buy a smaller pulley than a bigger blower.
Wish I had done it this way.

FriedRicer

that would be my intent, to not have to ever upgrade the head unit. when do 60lb inj run out? 7xx whp? nevermind, found it, 650-750 depending on FP.

HotRod68Camaro

I did the same thing you want to do. I slapped a F1C on my stock shortblock. Had to put a restrictor plate on it b/c it wouldn't make less than 700hp with the largest pulley i could fit.

QUIKSILVERZ

been thinking the same thing also. The larger blower was a reason i like the ecs novi kit. A&A suggested that i go with a t-trim, blower cam and a built bottom end also.

ONE BMF

BLOWNBLUEZ06

If you put a big enough pulley on the car, the YSi will be fine. There will be plenty of power available when you decide to forge your motor too. Just upgrade to the 8-rib kit, put a smaller pulley and shorter belt on and you're in business.

FriedRicer

is it remotely possible that the Ysi wont slip with the 6 rib and the cartek flip? after reading some post about the flipdrive, iirc, someone from cartek said the 8 rib isnt necessary when using the flip drive. (i know the Ysi is pretty extreme, just checking before dropping another $1K on the 8 rib)

How is drivability with the ECS blower cam?

thanks for all the help/suggestions!

BLOWNBLUEZ06

Driveability is fine with the ECS blower cam as is with the A&A blower cams as well.
It's not the slip you'll have to worry about. It's the strength of the belt when you start to run any significant boost. I'm trying to save you from having to upgrade to the 8-rib when you forge your motor, wasting the 6-rib setup. Andy at A&A's price on the 8-rib is as good as it gets.

stevieturbo

I fitted a YSi to my standard LS1 when I first started ( albeit with headers and LS6 intake )

I used pulleys with a stepup of 2.06 ( 8.25/4.0 ) and this made around 10psi. I used a 6 rib belt on this, and it worked fine.


Although I did only run it like that for about 4 weeks before fitting a better engine. I just wanted to get the SC install done, and make sure it was working, along with the engine install into my car to eliminate any teething problems before fitting a better engine.