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Gen I block vs Gen II block

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Gen I block vs Gen II block
Old April 27th, 2005, 11:20 AM   #1
 
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Gen I block vs Gen II block

Please let me know. Is there a difference?
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Re: Gen I block vs Gen II block
Old April 27th, 2005, 11:25 AM   #2
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Re: Gen I block vs Gen II block

no they are exactly the same despite them making completely different levels of power. :redbeard:
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Re: Gen I block vs Gen II block
Old April 27th, 2005, 01:30 PM   #3
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Re: Gen I block vs Gen II block

Quote:
Originally Posted by Craig201MPH
no they are exactly the same despite them making completely different levels of power. :redbeard:



asshat
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Re: Gen I block vs Gen II block
Old April 27th, 2005, 01:31 PM   #4
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Re: Gen I block vs Gen II block

Exactly the same, only totally different.
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Re: Gen I block vs Gen II block
Old April 27th, 2005, 02:26 PM   #5
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Re: Gen I block vs Gen II block

If my memory serves me.....
gen I's have a cylinder liner that is 'loose fit' - gen-IIs is machined interference fit.
gen-II's blocks are lighter - I think
Since the heads aren't interchangeable - there must be oiling or water
passage differences - or differences in front machining to accommodate accessories because the alternators have different locations.
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Re: Gen I block vs Gen II block
Old April 27th, 2005, 05:12 PM   #6
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Re: Gen I block vs Gen II block

Gen1 = wet sleeve block "heavyweight"

Gen2 = dry sleeve block "lightweight"

Same displacement, (same crank/rod/piston) different castings for both block and heads
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Re: Gen I block vs Gen II block
Old April 27th, 2005, 07:04 PM   #7
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Re: Gen I block vs Gen II block

They are different as noted above the gen 1 is about 80 lbs heavier. You can tell an early gen 1 block by looking for a snowflake on the right side of the engine. The main way to tell the difference between the 2 engines is that the main caps are cross bolted on a gen 2. You can see the bolt heads for the main caps along the sides of the engine block. I would stick with a gen 2 engine they are stronger.

Just my .02 cents
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Re: Gen I block vs Gen II block
Old April 27th, 2005, 08:14 PM   #8
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Re: Gen I block vs Gen II block

Quote:
Originally Posted by cgmaster
They are different as noted above the gen 1 is about 80 lbs heavier. You can tell an early gen 1 block by looking for a snowflake on the right side of the engine. The main way to tell the difference between the 2 engines is that the main caps are cross bolted on a gen 2. You can see the bolt heads for the main caps along the sides of the engine block. I would stick with a gen 2 engine they are stronger.

Just my .02 cents
The best way to visually check for a Gen 1 engine is to look for traces of antifreeze leaking.
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Re: Gen I block vs Gen II block
Old April 27th, 2005, 10:11 PM   #9
 
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Re: Gen I block vs Gen II block

HHHHMMMMMMMMMMMMMM, Would you have Gen I or Gen II? I have been told the Gen I is very strong on the bottom end.
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Re: Gen I block vs Gen II block
Old April 27th, 2005, 10:29 PM   #10
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Re: Gen I block vs Gen II block

80lb of aluminum must account for something
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Re: Gen I block vs Gen II block
Old April 27th, 2005, 10:42 PM   #11
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Re: Gen I block vs Gen II block

SVS used a gen 1 for thier 1500hp Stryker car...
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Re: Gen I block vs Gen II block
Old April 28th, 2005, 10:42 AM   #12
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Re: Gen I block vs Gen II block

The gen 2 has cross bolted mains which help the bottom ends strength. Also the manufacturing process that was used gave the metal in the block a greater tensile strength. This is second hand knowlege so it may not be totaly correct but it was what an engineer told me. It may be possible to give the gen 1 more strength by having cross bloted mains. It would take some major machine work to do this however.
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