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Old 02-19-2008, 05:23 PM
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Cam Selection Help

I have that 65 Malibu project and have a
4 bolt 454 with flat top pistons. I am removing the
stock heads cast#10114156 which apparently are not
that great. I have a set of 063's 68-69 396, 427 heads
that I am getting rebuilt. I want to put them on to bump up
the compression a little. My question is these 063's are close
chamber 101cc. .with flat top piston won't the valves hit the
piston? because on older motors like the 396 the piston were
domed on half the top so that the valves did not tap the piston.
I know guys that have done what I want to do and it takes a low
compression, low power motor and snaps it up pretty good. What cam
should.can I run that will maximize the power and give it a nice rupity
lope idle? Small block are easy to cam, but getting a lope out of a BBC
is hard unless you go all out.
Please help me. The heads are getting rebuilt right now and can get the
bowls port for $400 which seems spending to me.
Thank you a lot

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Old 02-19-2008, 05:30 PM
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Please read this tech information from Iskenderian. It covers your question and more......
http://www.iskycams.com/camshaft.php
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Old 02-20-2008, 09:35 AM
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Cam Selection for 063 heads

"F-BIRD'88" Thank you

About the piston...I am not sure what they are it is a .030
over stock motor. In fact I have not pulled the old heads off
yet, but I assume they have the valve relief notches.
So the "143" cam is a selection you can get through CompCam
or Crane? or would a guy call the dealer and ask if they can get
one for a 1970 LS-6? The LS-6 had rect port heads mine 063's
are oval, but are still pretty good heads.
Again...thank you for the info and if you have more I would be
in debt to you.
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Old 02-20-2008, 10:14 AM
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Cam/Head CR Combo

Again "F-BIRD'88" thank you. You have apparently
a lot of experience which is very helpful to all.
Well I am go to drop my 063 heads of tonight with
some direction to the machinist in regards to decking
them approx .060" to reduce cc's in the chamber slightly.
I need to pick the cam/spring selection so the can do their
job though. With all the selections not sure which one to go
with. Believe it or not never ran a Crane, always Comp or Isky.
Summit Racing Magazine does not list Isky cams though.
Which would offer the most benifit and meanest sound to my
454? I do know that having a nice lopy runner does not mean
more power...I definetely want both.
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Old 02-20-2008, 11:36 AM
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Cam Selection

F-BIRD'88 thanks for the info.

I will trust your knowledge even though I don't know you.
Hopefully the Isky #396245 comes in a package with lifters,
springs or offers the package.
So am I to understand this is a solid lifter cam? that I can still use
my stock rocker arms?? as you stated.
What does the "Z-45" mean with the Isky 396245 cam? Back in the day
BBC 396 engine offered 375 horse hyd lifters and the corvette version
being the 425 horse with solid lifters 50 more horse with just solid lifters.
Anyway..I am going with the 396245 and I appreciate the help a lot.
One more question..."what happens if I pull the existing heads off this engine
and the flat top pistons have no valve relief notches? just plain old flat.
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Old 02-20-2008, 11:59 AM
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Cam vs head Selection

F-BIRD
I have the catalog and am on line with Summit right now
I see the 396289, 396255, 396266 nothing on the 396245.
Isn't the problem with solid lifters that you are always adjusting
the rockers? I just want to run the plain old 3/8" pushrods, stock
rockers, nice intake, headers and this solid lifter cam. Looking for
the right set up for weekend romping not daily drivers...(well maybe not)
you know how that goes. My goal is to make my 65 Malibu into the
Z-16 version clone with this 454 instead of the 396.
Sorry if I seem ignorant with specs and numbers. I can pull engines, heads,
cams, rebuilds, clutches vertually anything ,but I lack in the match numbers
for the optimum output. That is why I appreciate your advice. We have narrowed it down to the 396245.
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Old 02-20-2008, 12:47 PM
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Cam vs Head Selection

OK F-Bird
I printed outthe info...cool.
BBC are hard to get that beefy lopy sound
is this 396245 going to achieve that? to where
your sitting at a light and your antenna is bouncing
back and forth 6"
I had a speed shop build a 396 with 292 CompCam and
it was surprisingly pretty stock sounding and I had dome
pistons, ported close chamber heads, nice intake headers etc..
the lift looks good on this at .530 but lift doesn't equal power or
lope..
Anyway...
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Old 02-20-2008, 02:31 PM
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Cam-Selections

F-BIRD
I think I did say I wanted a street cam, but a racey
street cam. I do think the Crane will work because of
the CR I will end up with after I get my heads decked
.060"-.070". the lift on the Crane will probably be too much
for the clearance.
The solid lifter cam (Isky) you suggested will do I guess.
Can't expect too much with 9.0-9.5 CR. As long as is apparent
there is some beef and lope. Besides with the 65 she is pretty
lite weight and with the 454 I should be happy I hope. Just having
the solid lifters and the 396245 will bump it up a few notches.
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