A stock carb setup for stock A series is quite formidable as well
there are plenty of ways to make the stock carbed A series very
smooth with little tricks like indexing spark plugs and my fave
a heavier flywheel than stock increases economy and driveability
in all street rpm ranges. Electronic ignition and once is a while
spray h20 into a warmed up running engine to clear carbon deposits

As an experiment after owning a 2cv used a custom billet flywheel
made for speedway! that came with some parts I bought in a lot
and fitted to an high comp stock A12 you couldnt stall it
and climbed hills like it was an L series.
It was like a momentum energy storage device!
Few credit how silky smooth driving is with a heavier fly

The EFI manis for the A series flow more than the stock carb manis
and rowland manifolds make a nice setup for 38/38 as well and
Ive seen an SU adaptor to a similar manifold to suit 2 inch SU
which could flow more than stock and match efi hp ratings

The EFI setup using stock manifold has an estimated cost of $632 USD total not including tax & shipping

Add to that cost of tuning:
* DIY: $181 new A/F gauge, wideband controller & Bosch LSU4.9 sensor
or
* $ ??? engineer & dyno time
or
* Old-school experts can tune by ear. Cost $0

Yes, he had flat spots when using E85 and unheated manifold. The stock manifolds are all heated, so it shouldn't be a problem

Yes, racing carburetors beat factory EFI, no doubt. Only when you get to the level of performance EFI does it win out

* A14 factory carbureted: 80 HP
* A14 factory EFI: 92 HP

* 1965 Corvette 327 factory 4BBL carb: 365 HP
* 1965 Corvette 327 factory fuel injection: 375 HP

Yes, this budget EFI is not a high performance option. It runs smooth and efficient, but if you're looking for big power a turbo is the best bang for the buck

This manifold and throttle body made 127 HP with turbo on sikyne's dyno

stock mani is restrictive for any carb or efi setup
and for 1000 clams better go DT carbed turbo

EFI even on todays most advanced Ford 4.6 engines
with factory tuned efi struggle vs Carbed setups
http://www.musclecardiy.com/cylinder- ... et-cylinder-heads-part-5/

All depends what you want but carbs are still not that bad
for economy and overall decent performance if you just make sure
your engine is healthy, higher comp and slightly larger capacity
if its getting either a freshen up or full rebuild

The single injector setup shown above had flat spots

Yes, makes more HP than the stock carburetor. The Excel throttle body flows more air, bigger than a Weber 32/36 upgrade. Smoother and more fuel efficient than any carburetor

Stock unmodified manifold



bolt on the Excel throttle body (comes with a TPS unit) about $30 used. bolt on the Lancer fuel regulator ($9 pick-n-pull, $35 new). Bolt on the used Nissan injector ($7 at pick-n-pull)

New EFI computer ($400 USD, $500 AUD) with plenty of potential for future upgrades including multiple injectors and coil packs, even turbo if you want

Add a Carter 60 psi fuel pump $79 and a return line of standard fuel hose, Tee into the fuel filler hose

I will put this in my build thread.

what is it? looks like two halves bolt together?

:D

MD-Machine Manifold

the budget EFI manifold flows more than the stock carburetor setup

Stock A-engine intake manifold
* Throttle Body (40mm) from a 1997 Hyundai Accent SOHC
* Fuel pressure regulator from a 1997 Misubishi Lancer
* 3-5mm thick alloy plate for the adapter
* Used or new single Fuel Injector

My mistake, the A14/A15 EFI manifold is the Buffalo: see WTB 'Buffalo' fuel inj manifold