Big Block question.

Posted By: Six Popper

Big Block question. - 03/03/10 11:24 PM

Okay so I have never owned a big block until about two months ago, I bought a truck that came with what I was told a 71 383 block. I was moving it around the garage today and thought I would check it out. I found the date it is a 71 year model, but I can't find the cubic inch. On small blockes it tells the CI on the opposite side of the the block as the date. This big block says 430 where a small block tells the CI. My question is where are the numbers that I can decode to tell me what I have. Thanks Chris

Posted By: 340dart4spd

Re: Big Block question. - 03/03/10 11:28 PM

Quote:

Okay so I have never owned a big block until about two months ago, I bought a truck that came with what I was told a 71 383 block. I was moving it around the garage today and thought I would check it out. I found the date it is a 71 year model, but I can't find the cubic inch. On small blockes it tells the CI on the opposite side of the the block as the date. This big block says 430 where a small block tells the CI. My question is where are the numbers that I can decode to tell me what I have. Thanks Chris

Casting numbers on side..check front of block where below where head would be..there should be some letters or numbers.. you also cond check pan rail..

Posted By: DaytonaTurbo

Re: Big Block question. - 03/03/10 11:44 PM

Should be big numbers on the side of the block, sort of under where the spark plugs would go.

Posted By: Six Popper

Re: Big Block question. - 03/03/10 11:50 PM

I checked oil pan rails, and for any pad under or around where heads are for stamped numbers with no luck. I will look at the cast in numbers but I'm sure it said 430.

Posted By: Six Popper

Re: Big Block question. - 03/04/10 12:09 AM

Casting numbers are 2536430-9.
Stamped numbers on oil pan rail are 2F176117.

Posted By: 340dart4spd

Re: Big Block question. - 03/04/10 12:15 AM

Quote:

Casting numbers are 2536430-9.
Stamped numbers on oil pan rail are 2F176117.

Numbers come up 440 66-72

check flat pad on driver side...topside of engine

Attached picture 5843589-131_0803_27_z+dodge_440_engine_rebuild+pad_numbers.jpg

Attached picture 5843589-131_0803_27_z+dodge_440_engine_rebuild+pad_numbers.jpg

Posted By: Anonymous

Re: Big Block question. - 03/04/10 12:59 AM

Quote:

Quote:

Casting numbers are 2536430-9.
Stamped numbers on oil pan rail are 2F176117.

Numbers come up 440 66-72

check flat pad on driver side...topside of engine

Numbers say its a 440.

BTW, a 383 won't have that pad; if it's there, it would have to be an RB, not a B. Easiest way to differentiate the two versions of the big block w/o even looking at any numbers.

Posted By: Six Popper

Re: Big Block question. - 03/04/10 01:31 AM

Quote:

Quote:

Casting numbers are 2536430-9.
Stamped numbers on oil pan rail are 2F176117.

Numbers come up 440 66-72

check flat pad on driver side...topside of engine

Thats the first place I looked, it has tooling marks on it. Not sure why but it does.

Posted By: 340dart4spd

Re: Big Block question. - 03/04/10 01:44 AM

Quote:

Quote:

Quote:

Casting numbers are 2536430-9.
Stamped numbers on oil pan rail are 2F176117.

Numbers come up 440 66-72

check flat pad on driver side...topside of engine

Thats the first place I looked, it has tooling marks on it. Not sure why but it does.

you didn't say that in your post..you did say you were told it was a 383..so I told you were to find numbers on 383...looks like you scored a 440...

Posted By: Six Popper

Re: Big Block question. - 03/04/10 02:03 AM

Quote:

Quote:

Quote:

Quote:

Casting numbers are 2536430-9.
Stamped numbers on oil pan rail are 2F176117.

Numbers come up 440 66-72

check flat pad on driver side...topside of engine

Thats the first place I looked, it has tooling marks on it. Not sure why but it does.

you didn't say that in your post..you did say you were told it was a 383..so I told you were to find numbers on 383...looks like you scored a 440...

You answered the question that I ask even if it didn't answer my question it was me that was sent everyone for a loop. Like I said I'm not familiar with big blocks. I guess the deal I got was a little sweeter than I first thought. The casting date is 11-71 so would that be considered a 72? Either way it was free and looks to be in good condition. Although looks can be decieving. Now to find something to do with it.

Posted By: 340dart4spd

Re: Big Block question. - 03/04/10 02:10 AM

Quote:

Quote:

Quote:

Quote:

Quote:

Casting numbers are 2536430-9.
Stamped numbers on oil pan rail are 2F176117.

Numbers come up 440 66-72

check flat pad on driver side...topside of engine

Thats the first place I looked, it has tooling marks on it. Not sure why but it does.

you didn't say that in your post..you did say you were told it was a 383..so I told you were to find numbers on 383...looks like you scored a 440...

You answered the question that I ask even if it didn't answer my question it was me that was sent everyone for a loop. Like I said I'm not familiar with big blocks. I guess the deal I got was a little sweeter than I first thought. The casting date is 11-71 so would that be considered a 72? Either way it was free and looks to be in good condition. Although looks can be decieving. Now to find something to do with it.

you would be correct a 72 block

Posted By: Six Popper

Re: Big Block question. - 03/04/10 02:24 AM

Thanks for the help, it might not seem like it but I was raised up around Mopars, so I look forward to being able to help you guys out in the future.