C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

LT1 block vs LT5 block

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Old Mar 18, 2003 | 09:04 AM
  #1  
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Default LT1 block vs LT5 block

Is there any differances in the these blocks? I know that the two have totally different head and intake setups, just wondering if the blocks are the same :) TIA.

Keith

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Old Mar 18, 2003 | 09:18 AM
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Default Re: LT1 block vs LT5 block (kromberg)

They are completely different. The LT5 has a 3.90 inch bore with a 3.66 inch stroke and if I'm not mistaken is made out of aluminum. As far as I know there isn't a single common part between the two.
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Old Mar 18, 2003 | 09:19 AM
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Default Re: LT1 block vs LT5 block (kromberg)

Yes, The LT1 has the cam in the block, and the LT5 is OverHead Cam...
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Old Mar 18, 2003 | 10:08 AM
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Default Re: LT1 block vs LT5 block (kromberg)

Totally different castings.
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Old Mar 18, 2003 | 10:30 AM
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Default Re: LT1 block vs LT5 block (kromberg)

now the LT1 and LT4 are very similar
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Old Mar 18, 2003 | 11:13 AM
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Default Re: LT1 block vs LT5 block (kromberg)

The only thing they share is the bore spacing and net CID.
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