Allan,
My 5-bolt 289 is .30" over as well, you should be fine with your
cylinder wall/water jacket thickness. Mine runs a 195 thermostat and I
have a modern 3-row radiator core, the stock shroud and a Maverick six
blade fan. The engine is 9.8:1 compression, Edelbrock AL heads, F4B AL
manifold and 500 CFM 4BBL., a CompCams XE268 grind and stock exhaust
manifolds. We've driven it all through the South in the dead of summer
and it has always run cool. Can't say the same for the occupants though!
The original Rootes setup was marginal for the 260, adding a modern
horsepower to an engine means much more heat is generated. Lots of great
articles on heat management on tigersunited.com, do your research.
Bugz
-----Original Message-----
From: Allan Ballard
Sent: Friday, January 21, 2011 2:48 PM
To: rfraser@bluefrog.com
Cc: Rollright@aol.com; tigers@autox.team.net
Subject: [Tigers] Overbore run hot?
My 5 bolt 289 motor turns out to be bored .030 .
Will this cause a problem with overheating?
Allan Ballard
Mk1-a Tiger
SIV Alpine
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