? 454 ??Year? MOdel?
 

I have a 89 pantera. I read these #'s off the back of the motor... Im guessing its a 1997 block with 1989 parts on it such as ignition and so forth...
Its not a magnum ???
What generation is it 4???
HP?
Thanks

h216
#10277297

What makes you quess that it's a '97 block ? I don't see that number on any casting number charts anywhere. I will tell you though mark 4's were made from '65 to '90, gen 5's from '91 to '96 and after that was the gen 6. Does your block have a provision for a mechanical fuel pump on the starboard side of the block at the front. If so it is a mark 4. After that the fuel pump was either electric or it was a mechanical one mounted on the seawater pump.

The fuel pump and the water pump are one assembly driven by the belt.... I was guess it was a 97 from the last digits... But when i have been buying parts for it for the distributer, they have been saying 80's ignition so i am thinking it blew up and they put the old parts on the new block... the distributor doesnt have points...

But its deffently not a magnum..??

10237297…..454……..96-up……..4-bolt, Vortec 7400″, “L-29″ Gen.VI
I think i was off 1 # i fount this on google..
I read more on it and Im almost 100% i hav e ageneration 6

This site here shows that casting number to be a gen 5 block.
http://www.teufert.net/bbchevy/bbcast.htm

And these other sites say it's a gen 6.
http://wildmusclecars.com/muscle-car...sting-numbers/
http://www.minuit10.net/EngineCode/c...stingblock.htm

Looks like the only way you will ever know for sure is by getting into it. I wouldn't worry about it until your ready to do a rebuild or some upgrades. One thing we know, it's not a mark 4!!

Here's something that might help distinguish between the two. The timing covers are different between the two.

Yeah the 6 has 6 bolts i heard...

correct me if i am wrong ,but i think gen4 blocks had [wet] head bolts,meaning that the head bolts protrude into the water jackets on the block.gen 5,6 had blind [dry ] head bolt holes.i have both and this is one of the diffrences,plus the rear main seal on gen4 is a two pc.gen 5,6 one pc.