View Full Version : steam holes sbc 400 heads/
JEFF69Z28
01-29-2009, 01:50 AM
Do i really need to have them?im only going to race the car.I would hate to drill into my new afr heads.
desoto30
01-29-2009, 06:58 AM
According to what I have read no.The proviso was,as long as the engine sees little to no low speed operation.
zipper06
01-29-2009, 09:49 AM
Nope not on a drag car, no one i know ever drills the steam holes in their heads, in fact use a gasket that does not include the steam holes.
JMO
Zip.
JEFF69Z28
01-29-2009, 02:32 PM
AFTER READING DART AND AFR'S WEB SITE THEY RECCOMEND DRILLING STEAM HOLES,I GUESS IT'S ALL UP TO EACH INDIVIDUAL ENGINE BUILDER.
jmarksdragster
01-29-2009, 04:07 PM
Between my brother, Dad, an myself we have run a LOT of 400's starting about 1979, never drilled any, even on street engines. Don't waste your time.
http://i287.photobucket.com/albums/ll150/jmarkaudio/MillerDragster.jpg
us7race
01-30-2009, 02:39 AM
No need to drill them. I have ran 400 blocks for about 4 years now everyweekend at the track and no issue's.
johnracer
02-01-2009, 03:34 AM
Agreed, no need for holes....