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| Notorious | General Chevy V8 bore & stroke dimensions | ||
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Posted on: 2008/1/26 2:51
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| tobijohn | RE:General Chevy V8 bore & stroke dimensions | ||
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That reminds me of something I've been meaning to ask. What's the biggest (c.i. wise) you can safely go with the LTx block?
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Posted on: 2008/1/26 4:08
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| Notorious | RE:General Chevy V8 bore & stroke dimensions | ||
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Quote:
That reminds me of something I've been meaning to ask. What's the biggest (c.i. wise) you can safely go with the LTx block? SonnyinVa has a 409 LT4. I've heard of standard SBC combos as large as 454. |
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Posted on: 2008/1/26 4:10
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| tobijohn | RE:General Chevy V8 bore & stroke dimensions | ||
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SonnyinVa has a 409 LT4. I've heard of standard SBC combos as large as 454. Thanks, any idea where I could get more info on the 409? And any reason you couldn't go higher with the LTx? And if you could, any reason you wouldn't want to? |
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Posted on: 2008/1/26 4:29
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| Notorious | RE:General Chevy V8 bore & stroke dimensions | ||
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Quote: The main reason is, that there was never an LTx block with larger than a 4.00" standard bore. Whereas the Gen I 400 block has a 4.125" standard bore. |
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Posted on: 2008/1/26 4:32
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| tobijohn | RE:General Chevy V8 bore & stroke dimensions | ||
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The main reason is, that there was never an LTx block with larger than a 4.00" standard bore. Whereas the Gen I 400 block has a 4.125" standard bore. I know cylinder wall thickness is a factor but can't most blocks be bored out a bit? Well, after typing my reply, I thought I'd get my lazy fingers to do a little work and this is something I found (in case anyone other than me is interested): http://www.thirdgen.org/techboard/eng ... stroking-lt1-how-big.html |
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Posted on: 2008/1/26 13:56
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| Notorious | RE:General Chevy V8 bore & stroke dimensions | ||
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Certainly but I mentioned their factory bores as a starting point. The 1/8" larger bore of a 400 block gives it substantially more displacement capability than an LTx or any other 350 block.
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Posted on: 2008/1/26 14:05
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| tobijohn | RE:General Chevy V8 bore & stroke dimensions | ||
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So then as far as dispacement cost is concerned it's a cheaper build to start with the 400, right?
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Posted on: 2008/1/26 14:09
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| Notorious | RE:General Chevy V8 bore & stroke dimensions | ||
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So then as far as dispacement cost is concerned it's a cheaper build to start with the 400, right? If you're still talking an LTx build though, the 400 block isn't usable with it. |
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Posted on: 2008/1/26 14:13
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| BrianCunningham | RE:General Chevy V8 bore & stroke dimensions | ||
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Largest I heard with a stock block is a 421ci.
The walls are real thin though, so you'll need to shop around  With long strokes you need to run a reduced base circle cam. Here's a good pic to keep in mind.  |
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Posted on: 2008/1/26 20:09
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| CasetheCorvetteman | RE:General Chevy V8 bore & stroke dimensions | ||
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Yes, 421 is the biggest ive seen as well, was in VETTE magazine many moons ago, red one, 1,000 horse daily driver, "Retched Excess" written on the front cover i think
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Posted on: 2008/1/27 5:32
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