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New chevy big block 454!!!!!!!

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Old 11-30-2008, 03:59 PM
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Smile New chevy big block 454!!!!!!!

hi i just recently bought a Chevy 454 big block engine in hopes of putting it into a 70 chevelle.
the guy i bought it from inform me that the engine came out of a mid 80's dually truck. Besides that i really don't know anything else about the engine, i have tried doing some research with the engine casting number but to no avail. On the actual block i noticed it had 7.4 liter. I was hoping if you guys would be kind enough to give me a little bit more information on the actual engine & maybe some advice on how i could transformed it from a low hp high torque engine to a respectable muscle car engine. The engine casting number i
believe is
"T0503UBA" or "T0503UB4"
i cant tell if the last digit is a letter or number. Thank you for your time, your patience, and your information.
Old 11-30-2008, 04:14 PM
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http://www.mortec.com/bbc.htm

That really doesn't look like a typical casting number, usually they are 6 to 8 digits with no letters.
Old 11-30-2008, 04:25 PM
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Casting # is at the back where the trans bolts to the engine on the drivers side, either way if its an 80's truck deal its got small "peanut port" heads which you may as well chuck in the dumpster.

The block should be good for a performance build, but it will have a cast crank and cast pistons around 8.5:1 compression. Hope this helps, find the actually casting #'s from the block and heads, then check Mortec and stated above and you'll know exactly what you have....
Old 11-30-2008, 05:19 PM
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yep. the heads are gonna be ****...you'll want to bump up that compression ratio as well.
Old 11-30-2008, 05:22 PM
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Default casting number

so i went back and checked out the the block and found this number on the back

140154451 and checked out the site, but now i cant tell the difference. Any help will be appreciated.

i also looked inside the pistons, and did not see any peanut shape.

14015443...454.......87-90...2 or 4-bolt, Mark IV, Truck, Motorhome

14015445...454.......78-90...2 or 4 bolt

14044807...454T..............4-bolt, Bowtie, MkIV, CNC prep, Tall deck, 4.25" bore or 4.495" bores

14096859...502...............4-bolt, Gen.V, HO
Old 11-30-2008, 05:36 PM
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im sorry for my ignorance, but i barely know how to turn a car on,
can you please explain to me what a performance build is and what does 8.5:1 compression mean?
Old 11-30-2008, 05:49 PM
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It would take far to long to explain it all, but start with a google search and check wikipedia it can teach you some basics......
Old 11-30-2008, 05:53 PM
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Its one of these 2 sometime its hard to read casting #'s clearly
14015443...454.......87-90...2 or 4-bolt, Mark IV, Truck, Motorhome

14015445...454.......78-90...2 or 4 bolt

As far as the "peanut ports" this is due to the very small size not the shape of the ports, they are also called small oval ports.....
Old 11-30-2008, 06:15 PM
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so if the engine is either of those 2, would i still have the potential of making it into a "performance engine"

my goal isent to take this car to the track and make it a dragster or anything like that, i just want to be able to lift the hood and have a respectable engine.

thanks for all your input guys.
Old 11-30-2008, 06:16 PM
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I had a smog motor w/ peanut port heads and changed the cam to a Comp cam 281/281 561/561 solid cam and woke that motor right up.
Old 11-30-2008, 07:14 PM
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throw the heads in the dumpster and give AFR a call and get a set of their aluminum heads theyre amazing
Old 11-30-2008, 07:21 PM
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just like I said in our pm's, you can make this engine do whatever your heart desires. For your goals, you should have no problem hitting your goal of 500hp
Old 11-30-2008, 07:46 PM
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Originally Posted by The Batman
just like I said in our pm's, you can make this engine do whatever your heart desires. For your goals, you should have no problem hitting your goal of 500hp
yeah bbc's have an endless amount of opportunities along the road!
Old 11-30-2008, 07:59 PM
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cool thaks alot guys i really appreciate all the input. if you guys have any other suggestions or input on how i should go about this please tell me, im all ears!!!
Old 11-30-2008, 09:00 PM
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go to summit racing and check on a top end kit if you want everything to be a nice driver since you say your not really knowledgable with motors. you can get a very good motor really cheap or for a little extra get a even more power. this will give you somewhere to start though.
Old 11-30-2008, 09:21 PM
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Whats your budget I'll tell you exactly what you need and how to get the best bang for you buck!
Old 11-30-2008, 09:36 PM
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im not sure, i dont really know how much engine stuff really cost,
i guess my budget is the cheapest way to get to 500 hp without nitrous.
Old 11-30-2008, 09:36 PM
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and i finnaly found out what kind of block i have its a

UBA = 83 ,454 ,from C-20 & C-30 Truck , 230hp ,RPO code LE-8 ,w/Manual Trans , 4-Brl
Old 11-30-2008, 10:19 PM
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There you go, it is a start. You can stroke the engine and make gobs of top end power, or simply bore it out and make a pump gas friendly street car that makes tons of torque.
Old 11-30-2008, 10:49 PM
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Here is a thread I started on teamchevelle when I had the same situation. It should be all the info you need. You could also get some 049 or 781 cast iron heads and have them worked over and be able to push 500+ HP with all the other goodies.


http://www.chevelles.com/forums/showthread.php?t=132566

Good Luck
Shane


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