which 300???
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Junior User
Joined: Feb 2001
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From: Canada
which 300???
I have a '79 with a 300, i love my 300, and i have the money to build a awsome 300, but i want to drive my truck while i do all the work so i will buy another 300, so does any one know what year was the best 300???? please don't tell me to buy a fuel injected one 
my carb 6 blows away all efi. thanks for any info!!
my carb 6 blows away all efi. thanks for any info!!
Post Fiend
Joined: Jan 2000
Posts: 5,860
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From: Metro Detroit (Redford)
which 300???
If you are going to build an awesome 300 then you should try to find a heavy duty. The HD was offered somewhere around the 60' and 70s or so and included a forged alloy steel crank, whereas the regular 300 has a cast iron crank. The HD has some other features, I think tougher pisions and valves--not sure. HD was offered in heavier trucks and in some pickups. Don't know how to id one, except a forged crank setting on a carpet will ring like a bell when hit with a wrench, whereas a cast crank will just thud. There are visual signs too, but I don't remember them.
Posting Guru
Joined: Mar 2001
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which 300???
To extend the crank idea, here's some food for thought: The "light duty" crank is made from nodular iron. Nodular iron is great at vibration dampening & may have some better benefits over the brute strength of a forged steel crank....hmm
Post Fiend
Joined: Jan 2000
Posts: 5,860
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From: Metro Detroit (Redford)
which 300???
>To extend the crank idea, here's some food for thought: The
>"light duty" crank is made from nodular iron. Nodular iron
>is great at vibration dampening & may have some better
>benefits over the brute strength of a forged steel
>crank....hmm
Interesting! It would then seem that the ringing like a bell is related to the transmission of vibrations, whereas the dull thud of the nodular iron is related to dampening vibrations.
>"light duty" crank is made from nodular iron. Nodular iron
>is great at vibration dampening & may have some better
>benefits over the brute strength of a forged steel
>crank....hmm
Interesting! It would then seem that the ringing like a bell is related to the transmission of vibrations, whereas the dull thud of the nodular iron is related to dampening vibrations.
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