Red98C5

I'd like to get info on the flow numbers for the stock unported LS1 heads, like the "806" - "241" - "243" castings. I'm interested in what the stock ports flow on these castings to see how much better aftermarket heads will actually be. Can anybody help?

SOMbitch

iTrader: (8)

I think Livernois website shows the comparison. It is by a pretty good margin but the intake runners are bigger than stock so that accounts for some of it.

2xLS1

iTrader: (25)

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LivernoisMotorsports

iTrader: (1)

Here are the flow numbers for a stock 243 casting compared to our CNC stage 2 243 casting with a 220cc intake runner.



Thanks SOMbitch!

Regards,

Rick LeBlanc
Livernois Motorsports

99Ls1fever

iTrader: (3)

What LS heads are those that you are comparing??? LS6? or LS1?

FTW

Id say those are Ls6's after looking at the attachments in post 3..

BlackScreaminMachine

iTrader: (17)

Also bear in mind since the motor cannot run w/o an intake, the intake is going to be the main determination. I dont think there is a intake out there that flows over 300 thats factory based, i.e. LS1, LS6, FAST (even ported), Typhoon.

99Ls1fever

iTrader: (3)

Have you ever seen or found a flow sheet for intakes??? Cause that would be cool..

LS1-450

iTrader: (33)

LS1Tech, Gen III External engine stickies, scroll down to letter F. LS1 tech stickies contain a lot of information.

99Ls1fever

iTrader: (3)

Also does anyone know what the stock flow numbers are for LQ9 heads and if you have them ported and polished also... so stock flow and ported flow numbers I have been searching every where it seems like to find a dam flow sheet for these things...