Howdy from Texas! I am looking for info on the Holden 12 port heads. Does anyone know if any of them are compatible with the Chevy inline sixes.
Firstly, welcome and G'day from Aus. This is a good question. I assume your meaning the blue flame type chevy inline 6's like the 292 etc. I've often suspected our Red 186, 202 were loosely based on your chevy motors, and the similarities are hard to ignore, but I'm not sure if any parts are interchangable. Maybe if you could provide some measurements such as bore spacing centre to centre, and bolt hole arangements and spacings it might give us both a better clue. As you can imagine we don't have a lot of chevy 6's over here, but there are some for sure. I also imagine there are not too many Aussie Holden motors in your part of the world either. I'm sure someone from this site will know more or be able to find out. Keep watching
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Thanks for your reply! I found the following info on Wikipedia. "Holden up until 1986 built their own straight-6s, adapted from a Chevrolet design. A '132.5' cubic inch, 2.171 L unit (known as the 'grey' motor) was used until 1963, with a minor increase in displacement in 1960 to '138' cubic inch, 2.261 L, when it was replaced by a newer Chevrolet based design (known as the 'red' engine) which was offered in different capacities. Holden engine sizes included the '138' 2.261 L '149' 2.441 L '161' 2.638 L '173' (2.85 L - 1971-1984), '186' (3.0 L - 1968-1971) and '202' (3.3 L - 1971-1986) - the largest and most popular of the series." The bore spacing on the Chevy 292 engine is 4.400" I'm not sure if the earlier engines are the same.
they look similar in pictures but the chevs are bigger in actual size than the holden 6.ivé got a mexican 3.8 litre(70,s) and 292(truck)here and neither of them have any noticable parts that could be interchanged with a holden 6.however if you are on about blue flames there is some interchanging parts with the early toyota landcruisers(6 cyl petrol)f and 2f motors as they were designed from the blue flame(apparently the f heads can be modified to suit blue flame and water pumps used)i have used a blue flame fuel pump on a 3f cruiser motor-bolts straight on. cheers steve.
p.s to l.m.h-blue flames look like grey motors(are 215 and 235 c.i),250,292 and 3800,s look like red motors
the chev six 292 looks the same as a holden red in many ways but everything is physically bigger so nothing is interchanable....(have you considered a duggan head for your 292?) there was a 292 on the cover of hot sixes magazine years ago and everyone assumed it was a holden red..l had one once meth injected etc,etc...wish i still had it...can only wonder what could be done with a little boost
HAVE 12 PORT WAYNE IN A 261 BORED STROKED WITH 15TO1 COMP USING A WINNING PRO CAM FROM HOWARD AND HIBORN INJ WENT TO VACA RACE TRACK IN 60S BEST TIME 142 MPH AT LITTLE OVER 8SEC THE NEW ENGINES OF TODAY CANT DO THIS SO IM SO LUCKY TO HAVE ONE AND ITS NEVER TO BE SOLD WILL GO TO CHEV OHIO MUSE WHEN I PASS THANKS DON ENGINE WAS IN 37 CHEV COUPE NEED ANY INFO EMAIL ME DONORLOUGEORGE@YAHOO... OR CONT ME AT NASA PROJ ING AMES CA
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