>> There is an article in this months Sport Compact
    >> Car about how some dummie spent big bucks shoehorning a
    >> 300 ci LS1 V8 into a third gen RX7. No expense spared.
    >> Surprise! The 159 ci rotary was .12 G quicker on the skid
    >> pad (that's a lot) and 3.85 seconds quicker (that's a lot)
    >> around a real tight road course. (Streets of Willow) The 80
    >> to zero stopping distance was 35 feet shorter from 80 MPH. Duh!
    >>
    >> What a way to ruin a great car.
    >>
    >> Paul Lamar ...No rotor no motor.
    >
    > But here is a chance for some one to track this goombah down and
    > possibly
    > pick up a good rotary either cheap or free.
    >
    > John
    >
    >
    > Yep.
    >
    > BTW the magazine got the weight of the 3rd gen turbo 13B engine
    > at 425 pounds. Pure unadulterated BS. Bare weight is under 200
   pounds.
    > Add 50 pounds at the outside for the dual turbo's and another 30
    > pounds for the flywheel and clutch.
    >
    > --
    > Paul Lamar ...No rotor no motor.
    >

   Hi Paul,
   more to the point,
   I thought an LS1 was a 350 ci engine, ie in Oz it is 5.7 litre
   Cya, Dave McC

   Yes you are probably right. I was guessing. There are several
   version of basically the same engine. LS x I can't keep they straight.

   BTW they are in no way related to the famous "small block". They are
   an entirely different die cast aluminum block engine. Chevy is trying
   to capitalize on the racing fame of the original small block. The
   real small block
   is a much more robust and stiffer all cast iron block engine. The
   flexi block LS1 feels like a hand grenade getting ready to blow
   at full chat (350 HP) and 6500 RPM. It is scary. Never the less
   the real small block was worth 2 hours at racing HP levels
   (700 to 800 HP) and then it was a mass of cracks.

   Paul Lamar ...No rotor no motor.


Err...  You might not like the way LS1's sound (some people think 13b's
sound like chain saws, only worse), but they do make power..  On a stock
LS1, by the time you get to 6500RPM, you're already losing power
(1000RPM beyond peak).  Most of the cam/intake combos make best power at
5500-6000.  If you cam and plumb it to peak at 6500RPM, you'll be north
of 450hp.

BTW, I think most stock computers cut the fuel on the LS1 at 6000RPM.
If you get to 6500RPM, either something is broken, or not stock.

http://www.superchevy.com/technical/engines_drivetrain/cams_heads_valvetrain/0406phr_gen3/

Small block chevy's are now making 900hp (crank) in circle track racing
at 9500-10000RPM..  Failures are surprisingly rare - ignition,
transmission and clutch problems dominate.  That's SB2, not LS1.


Matt-

I am not talking about the exhaust sound. Just the feeling
you get by the apparent vibration levels. I have stood next to
both of them in dyno rooms.

Are you talking about 2 hour NASCAR racing or 15 minute sprint car
races. As I understand it NASCAR engine breath through a four barrel
carb and a restrictor plate

Paul Lamar ...No rotor no motor.

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