have big block question - The 1947 - Present Chevrolet & GMC Truck Message Board Network

iluvmy72 · 05-17-2009, 11:06 PM

Hi all.....I posted this in the engine and drivetrain section but I never get anyone there to answer my questions....But I have had good luck in the past with my trusty old 67-72 friends....I have a 1996 burb with a seized Vortec 454. I do have a engine block from a 94 burb. Are the blocks the same? I was told that they are and I don't even need to move the heads because there were no "vortec" heads on the 454....is this true? If so all I need to do is move over the mounts and intake parts for the harness. Any more insite on this? Or is cut and dry? I need to know. And if longhorn man sees this thread....how's it going? And no I have yet to put the rocket 350 in the 72.

Chevy1TonFun · 05-18-2009, 12:36 AM

I would look at the block numbers and see if they match or what years they were in. I'd start there. My thoughts are that they should be the same motor. Chevy is good about that.

**53burb** · 05-23-2009, 06:18 PM

from what I remember, this will NOT work. They are not the same block. I had this idea a few years back & asked the same question, but I do not remember the answer, but I do remember that it would not work. I will try to search for it in a little bit.

**53burb** · 05-23-2009, 07:06 PM

read post #30 on this....http://67-72chevytrucks.com/vboard/s...=236304&page=2 & #3 on this one...http://67-72chevytrucks.com/vboard/s...d.php?t=238126

05-17-2009, 11:06 PM	#1
iluvmy72 Registered User Join Date: Jan 2002 Location: Springville, UT, USA Posts: 1,010	have big block question Hi all.....I posted this in the engine and drivetrain section but I never get anyone there to answer my questions....But I have had good luck in the past with my trusty old 67-72 friends....I have a 1996 burb with a seized Vortec 454. I do have a engine block from a 94 burb. Are the blocks the same? I was told that they are and I don't even need to move the heads because there were no "vortec" heads on the 454....is this true? If so all I need to do is move over the mounts and intake parts for the harness. Any more insite on this? Or is cut and dry? I need to know. And if longhorn man sees this thread....how's it going? And no I have yet to put the rocket 350 in the 72.

05-18-2009, 12:36 AM	#2
Chevy1TonFun Grease Monkey Join Date: Oct 2007 Location: Fresno CA Posts: 750	Re: have big block question I would look at the block numbers and see if they match or what years they were in. I'd start there. My thoughts are that they should be the same motor. Chevy is good about that. __________________ Tow Rig: 2012 Chevy 2500HD CCSB LTZ Z71 4x4 Duramax Ultimate Offroad Build: 1978 Chevy Silverado K30 Crewcab Build Link http://67-72chevytrucks.com/vboard/s...d.php?t=654053 Mud Truck: 1972 Chevy Cheyenne K30 4x4, 468/400/205, D60/D70HD, 18" Custom Lift, 17x39" IROKs FOR SALE http://67-72chevytrucks.com/vboard/c...ton-4x4&cat=12

05-23-2009, 07:06 PM	#4
53burb Senior Member Join Date: May 2004 Location: Queen Creek, AZ Posts: 1,010	Re: have big block question read post #30 on this....http://67-72chevytrucks.com/vboard/s...=236304&page=2 & #3 on this one...http://67-72chevytrucks.com/vboard/s...d.php?t=238126

05-23-2009, 06:18 PM	#3
53burb Senior Member Join Date: May 2004 Location: Queen Creek, AZ Posts: 1,010	Re: have big block question from what I remember, this will NOT work. They are not the same block. I had this idea a few years back & asked the same question, but I do not remember the answer, but I do remember that it would not work. I will try to search for it in a little bit.



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