Tall Deck 427 ??? Any Good ???

Old 05-14-2007, 09:05 AM
  #1  
ibet55
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Default Tall Deck 427 ??? Any Good ???

I'm not much of a mechanic, so I'll just ask a silly question. I found a complete tall deck 427 Chevrolet (suposedly it runs good) Anyway, are they worth anything, or are they boat anchors??? Thanks for any input. :?: :roll:
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Old 05-14-2007, 10:11 AM
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Robert1320
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Make sure it is not a 366. The 366 is junk.

You can have some fun with the old 427.
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Old 05-14-2007, 10:15 AM
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topsportsman1
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If thats an old truck engine I wouldn't use the pistons that are in it,they are the 4 ringed pistons,junk as far as I am concerned,the 4 ring pistons
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Old 05-14-2007, 12:03 PM
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mcracecars
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as stated, tall deck 427s were/are truck blocks. Dont use the pistons and i seem to remember the head ports were quite small, but these blocks can make a nice street motor, or these days with all the goodies you can buy for them, an excellent race motor.
If what you found is indeed just a truck motor, then do not use it in stock form, it needs to be gone over...
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Old 05-14-2007, 06:14 PM
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CHEVYMATT
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if it is a truck tall deck 427 then you can take and install a 4.25 stroke bbc crank and stock 454 pistons then run a 6.385 rod i think . hopefully someone will correct me if needed. a friend of mine built one with stock .30 over 454 pistons a 4.25 crank and either stock lenth rods or 6.385 rods and it worked great . it save him lots of cash to not have to buy 496 pistons. makes a nice 500 cube engine
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Old 05-15-2007, 12:34 AM
  #6  
edvancedengines
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My opinion is that it is a great low cost base for a strong stroker engine. You can easily install a 4.250 stroke crank with not a lot of grinding. You can install a 4.375 crank with more grinding for clearances. Guys that are good have put 4.50 strokes in them but that is trickey to do.

You can use a 454 4.00 crank by grinding some and by using a set of 6.385 rods Corrected by DCarr. It is in fact the 6.535 rod. you can use a factory 454 piston.

That block is cpable of 427 - 433 - 440 - 452 - 454 - 461 - 477 - 482 - 496 - 509/510 - and up to 540 cu inches.

It was THE HARD CORE RACE block in the older days, before Dart, World etc. The block will handle a ton of hp with only minor block prep. I mean well over 1,000 hp and I have seen them live at 1,400 hp after they were fully prepped and filled.

Can you believe all the garbage I just wrote. I find it hard to believe too, but I have done it many times.

It is .400 taller than the standard block. iT was the first 10.200 block.

Ed
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Old 05-15-2007, 02:45 AM
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dcarr511
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Are you guys sure its a 6.385 rod w/ stock piston and not a 6.535" ?

.400" taller deck would require a .400" longer rod ...........................

I recently ran one that was .125" over w/ 4.250 stroke
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Old 05-15-2007, 03:27 AM
  #8  
edvancedengines
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Don,
You are correct. It is the .400 rod. I guess I am having brain fade.

Ed
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Old 05-15-2007, 07:51 AM
  #9  
ultimatewarrior1
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Default 427 tall deck

I RUN A 427 TALL DECK IN MY MUDRACE TRUCK W/454 CRANK& PISTONS W/6.985 ALUM. RODS . THIS MOTOR IS A SCREAMER,IF I WAS YOU I WOULD GET THE MOTOR YOU CAN DO A LOT WITH THIS BLOCK. I ALSO WOULDN'T USE THE ORIGINAL HEADS ,USE SOME 990 HEADS OR SOME GOOD ALUM. HEADS.I'M USING AFR CNC HEADS AND HAVE NO COMPLAINTS.
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Old 05-15-2007, 11:03 AM
  #10  
fastfisherman
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Make sure to buy the correct intake, one for a 10.2 tall deck block.
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