The first thing we changed when rebuilding the motor
was to the 76 flat top pistons instead of the dished
out ones. Then a little off head to true it up, stock
valves and single springs. We wanted to try the dual
springs on valves that use to be stock, but no
necessary parts available anymore. The roller stuff is
too expensive for us at this time. We really would
like to someday put a cam in that actually has
bearings and not the stock one that only uses the
block as bearings. Must be a lot of power loss there.
Thanks,
Don & Henry
--- STEVE STERN <MACHINEMD@msn.com> wrote:
> Actually, I had the engine out a couple of winters
> ago. I had things check
> by a local performance machine shop and their
> opinion was that it appeared
> that a rebuild had been performed not long ago. In
> the end, I honed the
> cylinders and did new rings and connecting rod
> bushings, new valve guides
> fitted w/seals, and did a mild porting job myself to
> clean up the rough
> casting. I don't remember the numbers but
> compression was great. It's just
> that I've read a number of times that the
> compression ratio was reduced on
> USA models to better meet EPA specs while Euro
> models were left higher with
> 10 hp more. At factory specs these USA model
> "sports" cars have no balls.
> Mine is improved so far but I feel I want a little
> more. I use mine as more
> of a daily driver for the summer so am willing to do
> some less expensive
> mods to improve performance. From what I've read,
> roller rockers will give a
> little more power and smoothness in the lower/mid
> range so I am considering
> trying them out for the summer. Of course Jim
> Swartouts $150 set, not the
> $700-$800 sets the big 3 offer! And I want to judge
> their improvement alone.
> Then if I want still more, come winter, maybe plane
> the head and 3 angle
> grind the valves. I just want to put a little more
> sport in the sports car.
> I don't personally know anybody else into LBCs, so I
> pick up what I can,
> where I can. Thanks for the input.
> Steve
>
>
>
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