>
> > > > 3.5 litre Rover + 2100lbs + nitrous = 10.62 secs @ 126 mph - on
> > > > street tyres!!
> > > >
> >
> > Tell me more. What is the car, what mods has the engine got ?
> >
> > Thanks,
> >
> > Ian
> >
---- you wrote:
> Ian, thanks for the interest.
>
> The car has a full tube chassis, 9 inch Ford axle, Powerglide automatic
>transmision with manual shift, trans brake and high stall convertor. The body
>is from a Vauxhall Firenza. Total weight, with driver is 2100 lbs.
>
> I designed and built the chassis myself. I even made the tube bender! In
>fact, the only things I didn't do myself was bore the block and balance the
>shortened propshaft. Am I a tight wad or what!!
>
> Fitting the powerglide was a master-stroke. The class I used to race in
>insisted on street tyres. Manual transmissions shock the tyres too much, the
>auto really improved the launch.
>
> The engine spec is as follows -
> Standard SD1 3.5 litre block +0.020
>
> standard crank
>
> Group A steel con rods
>
> Ross forged flat top pistons
>
> Solid lifter cam (based on a crane 256 design)
>
> Roller chain cam drive
>
> Hollow chrome moly push rods
>
> Kenne Belle roller rockers (this may have been a mistake as I have had
>horrendous valve spring problems which I suspect are caused by these heavy
>rockers. I usually have to change 50% of the valves and all the springs after
>about 10 runs)
>
> Standard valves with some minor mods to improve flow
>
> I ported the heads myself using my home built flow bench. I've got some
>bigger valves, but want to cure my valve spring problems before fitting them.
>Flow testing didn't reveal huge flow gains anyway. I suspect it's because of
>the bore shrouding the valves.
>
> Huffaker intake manifold. (I flowed a Harcourt, but got better results from
>the Huffaker. This may not be a good comparison though, as the previous owner
>of the Harcourt had done some (bad) porting on it).
>
> 650 CFM holley double pumper
>
> Maximum RPM is up to 7400 RPM, depending how good the valve springs are.
>
> NOS Nitrous oxide plate injection. I made my own fuel and N2O jets and used
>an electrical bottle heater to stabilise the N2O pressure at about 1000 PSI,
>adjusting the fuel pressure for fine tuning.
>
> I have never dynoed the engine, but Quarter Junior comes up with about 390 HP
>and a 0 to 100 MPH time of 6 seconds.
>
> Adrian, Halifax, West Yorkshire.
>
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