300 casting numbers?
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New User
Joined: Dec 2003
Posts: 21
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From: Michigan
300 casting numbers?
Question,
Back in the 70's the car companies were trying to figure out what ways to save weight and that in turn would increace fuel economy. One way they achieved this was to make "thin wall" cast blocks to save wight (as much as 60 lbs. on a sb chevy). These lighter blocks reduced the strength of the base because of thinner head walls for coolant passages(no room for mistake when pocket porting) and also block passages more temperature sensative and cant stand as much power as the "thick wall" castings. Does anyone have any information at all on this subject particularly on the 300 I-6 model.
Thanks
Back in the 70's the car companies were trying to figure out what ways to save weight and that in turn would increace fuel economy. One way they achieved this was to make "thin wall" cast blocks to save wight (as much as 60 lbs. on a sb chevy). These lighter blocks reduced the strength of the base because of thinner head walls for coolant passages(no room for mistake when pocket porting) and also block passages more temperature sensative and cant stand as much power as the "thick wall" castings. Does anyone have any information at all on this subject particularly on the 300 I-6 model.
Thanks
Laughing Gas
Joined: Jun 2003
Posts: 1,218
Likes: 2
From: Parkville, MO (KC)
As an avid reader and contributor for bout 8 months here and at fordsix.com, I have not heard of this being done in 240/300 blocks (same block, in case you didn't know).
The 300 has a very strong bottom end -- they might have done this, but it might just not matter. At least, as far as I know, when people build up a hot 300, they are not too troubled with the block. Forged cranks are interesting and nice (found in some HD engines), but don't seem to be all that necessary either.
You probably know all that. anyhow -- can't answer your question, but don't know if it matters.
The 300 has a very strong bottom end -- they might have done this, but it might just not matter. At least, as far as I know, when people build up a hot 300, they are not too troubled with the block. Forged cranks are interesting and nice (found in some HD engines), but don't seem to be all that necessary either.
You probably know all that. anyhow -- can't answer your question, but don't know if it matters.
Thread Starter
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New User
Joined: Dec 2003
Posts: 21
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From: Michigan
OO kaaay, that would be one way to get results or someone could give me help as to a certain book that was printed such as there are for other V-8 confugurations. Another easier way is to find out what year the thick wall castings were last mass produced and go junkyard huntin. All I am asking is for that one piece of information mabey someone has. Unless you want to write a check out to me and ill most posotively get to finding out those specifics by sonic testing. 
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