There is a very good book covering the questions that you need answered. It
is called "Tuning Bless A-Series Engine" by David Vizard. I understand that
the book is currently out of print, but I have also heard that the author
has copies available. Here is his contact information from the monster list
APT (Advanced Performance Technology)
595 Iowa Avenue, Unit C
Riverside, CA 92502
From: Stella67@aol.com <Stella67@aol.com>
To: email@example.com <firstname.lastname@example.org>
Date: Saturday, July 04, 1998 9:22 AM
Subject: Bugeye engine mods
>Having restored a number of big Healeys over the years I am now
>two bugeyes (one for each daughter which they have named Bud and Wizer).
>Anyway, since the 950 engine isn't much bigger then my lawn mower engine I
>wondering what steps I can take to improve the over all preformance without
>replacing it with a larger engine. I got four engines and transmissions
>bought the two cars so I'd prefer to keep the engines if possible.
> I have several questions I would appreciate getting some advice on -
>1. How much can and or should be done in modifying the head. Does this
>benefit from being ported and polished, cced, oversize valves, etc?
>2. How much can be done with the block - I'll balance and blue print it
>wonder about piston sizes, cams, lightening the fly wheel, etc? At what
>to I increase performance but increase risk of failure as well?
>3. Are there any good headers and exhaust systems that should be
>4. Without massive changes, is there anything that can and should be done
>with the carbs - I have about six sets of what appears to be the original
>carbs but is their a better alternative.
>I know this is a lot of information and each could have a book written on
>but I would appreaciate any advice old hands with these cars can provide.
>would like to keep the cars as orginal as possible while improving the
>performance and drivability. We drive our cars and these will be driven.
>BJ8, BT7, AN5