Re: IML: more info about the fast 57

[Kenyon Wills <imperialist1960@xxxxxxxxx>]

Remco,

Why not write up the whole story, snap photos as you
go, and update there so you only have to write it down
once?

I'm doing a 1972 with a hotter engine, and that's
where I put my story....

CONTACT US button on the website if you'd like to go
that route.  You'll get a free web page and as much
space as you need.


-Kenyon


--- REMCO VAN LENT <lent0329@xxxxxxxxx> wrote:

> As it seems that there are a few questions about my
> 57 I'll try to give some 
> more details about the build.
> 
> First the engine.
> It's not that hard to get a lot of power from a 392.
> Most important is to get the botem end strong , I
> use a set of 4 bold main 
> caps a good set of H beam rods ARP studs on
> everything and custom forged 
> ross blower pistons.
> 8.5 to1 compresion ratio.Blower is a 6-71 overdriven
> to give me 14 pounds of 
> boost.
> With the cam that I'm using  8,5 to 1 compresion and
> 14 pounds boost I need 
> 110 octane gas.
> Overhere propane is used a lot to run our cars and
> propane has the octane 
> rating needed.
> The heads get large 2 " exhaust valves on a NA
> engine the intake valves 
> should be bigger than the exhaust but on a SC engine
> you want the exhaust 
> valves as large as possible.
> There is a lot of material you can grind away in the
> ports of the heads to 
> open them up.
> Exhaust system  A set of headers and a 2 3/4 dual
> system for normal use and 
> cut out valves just behind the headers
> Fuel system 16 propane injectors and 3  80 mm
> throttle body's  and a 
> megasquirt ECU
> Transmision : 4L80E GM  Controlled with the
> Megasquirt ECU GPIO board This 
> gives 2 automatic shift programs plus a full manuall
> option
> Stearing :Rack and pinion from a jaguar XJ6
> Brakes Porsche 911 rotors with 4 piston calipers
> Wheels and tires Car is now on 15" rims with
> 255-75-15 tires. No way I'm 
> going to find Z rated tires for this.Will need to go
> for 19"rims.
> Suspension : 4 Link rear suspension. Still need to
> find a way to controll 
> ride height of the front suspension.
> Shocks : found some shocks with adjustable stiffnes
> normaly used in 4x4 cars 
> The shock of the new corvette als looks good but
> they are electronicly 
> controled.
> @ megasquirt they are also working on a system with
> the GPIO board to do 
> this.
> 
> With the stock 3.18 rear end ratio , the 4L80E trans
> and tire that I have 
> now I calculate 5300 RPM in OD with lock up or 7000
> RPM in 3th
> This is not good 5300 is to low to get max power
> this should be around 6300 
> , but need a limited slip anyway so I can correct
> that.
> 
> Example of calculation  15 inch rim is 381 mm 
> 255-75-15 = 255x1,5+381= 
> 763.5 mm total height. to get the roll distange for
> 1 rev  height x Pi  = 
> 763.5x3.1415 = 2.399 meter per rev
> The 4L80E has a .75 OD  rear axle is a 3.18
> 1000 engine PRM  1000 / 0.75 / 3.18  gives me 419
> rear wheel revs per 
> minute.
> 419 RW rev x 2.399 meters makes 1005 meters per
> minute @ 1000 Engine RPM 
> 1005 x 60 makes 60.3 KMH = 37.69 MPH in OD with
> lockup @ 1000 RPM .
> 
> I will be happy to awnser other questions about this
> build on of of list.
> Remco The netherlands
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
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Kenyon Wills
 
 






















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