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Re: '75 Big block I.D.- 440 or 400?
[Re: 440fied]
#814478
09/26/10 01:41 AM
09/26/10 01:41 AM
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Joined: Oct 2005
Posts: 9,065
Milwaukee, WI
In_The_Pink
OP
master
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OP
master
Joined: Oct 2005
Posts: 9,065
Milwaukee, WI
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Quote:
Looks like a 440. See if you can have the owner check under that a/c bracket for the machined pad. Most full size Winnebago's that I've seen, like that one, had the RB motor.
Thanks, will do.  Will it be stamped "440" in that location?
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Re: '75 Big block I.D.- 440 or 400?
[Re: gtx69]
#814480
09/26/10 02:47 AM
09/26/10 02:47 AM
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Joined: Oct 2005
Posts: 9,065
Milwaukee, WI
In_The_Pink
OP
master
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OP
master
Joined: Oct 2005
Posts: 9,065
Milwaukee, WI
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Quote:
What is the casting numbers on the side of the block?
No clue, as I really didn't want to climb under this motorhome.
I was just hoping there was a "a 440 has the #3 intake runner straight and a 400 has it curved" type easy to I.D. difference since I know little about big blocks.
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Re: '75 Big block I.D.- 440 or 400?
[Re: In_The_Pink]
#814481
09/26/10 02:56 AM
09/26/10 02:56 AM
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Joined: Jan 2003
Posts: 104,346
Garden Grove, CA
OzHemi
Penguin-hating Ginger
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Penguin-hating Ginger
Joined: Jan 2003
Posts: 104,346
Garden Grove, CA
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Easy...if you look under that bracket, a 440 will have a raised pad area, and a 400 will not.. 383/400  413/440..  The raised pad area is right under the bracket in your pic, and just in front of the intake sealing rail basically..(left side of pic in the 2 pics above)
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Re: '75 Big block I.D.- 440 or 400?
[Re: In_The_Pink]
#814484
09/26/10 01:13 PM
09/26/10 01:13 PM
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Joined: Jul 2005
Posts: 862
Doo-Dah, KS
440fied
super stock
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super stock
Joined: Jul 2005
Posts: 862
Doo-Dah, KS
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Quote:
Thanks, will do. Will it be stamped "440" in that location?
Yes, it should be stamped 440 or even 413.
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