Chevy big and small block engines

[xxalexx at ix.netcom.com]

> From:          Bill Allen <BAllen at Vetronix.com>
> To:            "'diy_efi at efi332.eng.ohio-state.edu'"
>                <diy_efi at efi332.eng.ohio-state.edu>
> Subject:       RE: Chevy big and small block engines
> Date:          Fri, 19 Jun 1998 08:57:03 -0700
> Reply-to:      diy_efi at efi332.eng.ohio-state.edu

I have always wanted to do this also after listening to nice set of 
webers, what is response time of a state of art micro machined 
pressure sensor? About a charged particle time of flight detector.
alex

> You will probably have problems with a one-throttle body per cylinder
> arrangement. MAP and/or mass airflow sensing is almost impossible due to
> pulsations at low and mid-range. You are much better off with a single
> throttle body on a plenum with one injector per cylinder. The plenum
> will average out the pulsations over all the cylinders. 
> 
> As for methanol, that is a can of worms with EFI. Although there are
> injectors out there that will flow enough (remember that you are going
> from 12-15:1  AFR down to 5-6:1), they are going to be very difficult to
> find. I have been looking around for a source, possibly the Indy guys,
> but so far no luck. If anyone knows where to find such items, I'd be
> very interested too.
> 
> 	-----Original Message-----
> 	From:	Clive Apps   Techno-Logicals   416 510 0020
> [SMTP:clive at problem.tantech.com]
> 	Sent:	Friday, June 19, 1998 7:48 AM
> 	To:	diy_efi at efi332.eng.ohio-state.edu
> 	Subject:	Re: Chevy big and small block engines
> 
> 
> 			> > 
> 			> > Anyone have any idea what the weight of a
> 350 SB as compared to a 427/454
> 			> > BB is ?? and then the same with alloy heads.
> 		> 
> 		> Quick check shows bare block weights to be 269-272 lbs
> for
> 		> BB and 90(AL)-186 lbs for SB.  Heads (ea) are... 27.5
> lbs(Al
> 		> BB) (cast iron not shown) and 19.5-42.5 lbs for SB 
> 			> >From Chevrolet Power manual.
> 		> 
> 			> > Next question. what is the ideal EFI
> setup....stock TPI or a manifold with
> 			> > one throttle body per cylinder, or just a
> modified Corvette TPI
> 			> > setup...maybe aftermarket computer, bearing
> in mind also we may be looking
> 			> > at methanol also
> 		>  
> 			> > The end result has to be a dirt track engine
> producing around 500-600hp
> 			> > from as little capacity as possible with a
> maximum of 434ci
> 
> 	bore a 400 SB and you can get your 434
> 	a set of Brodix or similar heads and you got your 600 HP in a
> small package
> 	Clive 
> 
>