Originally Posted by cumbercr

I understand the LT1 block can't be bored to 4.125 without some serious work. I should have been clear that I was comparing to an aftermarket block like the Dart SHP. But I suspect your approach to increased displacement is more cost effective than the aftermarket.

Like you, my plans are for a daily driver. So I also want that strong torque curve throughout the RPM range. I just don't see peak RPMs that often on the street. Now you have me thinking I might want to use the Dart block and a 4" stroke. 427 has a nice ring. The cost is pretty much the same. But there has to be a point where the lungs get so big that the intake, heads and exhaust become the limiters. I'm anxious to hear how your whole build will come together.

Originally Posted by Charleston2012

There are no aftermaket block for the LT1's. Dart was thinking, but dropped out. GM made some Bowties, which were 4.125 blocks, but good luck seeing that block show up.
So, unless you have an L98 car, the LT1 is limited to 30 over or a very careful 60 over bore. You can stroke it to 3.875 for a 396 with 30 over, but over that you are really spending money and time for some precision machining. Reher and Morrison are definitely the shop to accomplish this. But the gain wouldn't be worth the cost.

Originally Posted by Pete K

I wonder if sleeving an LT1 block for larger liners is a viable option for increasing bore size?

Originally Posted by Charleston2012

LPE says they have tried it, but it was cost prohibitive. It would be nice, as technology has improved over the years. Reher and Morrison are the ones to ask on this project.
If I could sleeve an LT1 I would not even hesitate.

Originally Posted by Pete K

I never thought about it until now. Most of the world is scared of a sleeve, but I have no problem with one, if done right. My guy gets $100 to sleeve a hole, so I would imagine a minimum of $800 on top of the machining costs.

Originally Posted by Charleston2012

I guess another thread on this would be justified. If your guy is willing to do it, more information would be appreciated.
Man, an LT1 over 420 cubes would be nice, with what heads.......

Originally Posted by Pete K

Yup. I will run it past my machinist to get his opinion. I normally would not hijack a thread like this, but Jake bailed out of it and asked it be closed. I didn't think he would mind at this point.

Originally Posted by JAKE

You're not up to speed. That's obvious. Obviously you're not reading and haven't taken the time or expended the minimal effort to read what's already been done in the block catagory, etc. Why should I have to re-write that the block has already been taken to Reher & Morrison (of Pro Stock fame) to have the block thoroughly gone over, measured and checked. Do I really have to do that?

HELLO! Are you paying attention yet!!?

Should I have to re-write that I don't want and am not soliciting advice. Advice like I should do this or that I should do that? How more emphatically do I have to be to drive home that point?

HELLO! Did you just choose to ignore my wishes and what I wrote in my initial post and, instead, do it YOUR way in spite of what I wrote?

Do you think the other members are going to appreciate what you did/are doing, which is in DIRECT contradiction to my wishes? HELLO! Are we thinking yet??

Are you being deliberately defiant? If so, to what end?

Didn't I write to PM or email me rather than clutter up this thread with "you oughtas" or " I wouldas"? If I want advice I know how to ask for it. Didn't I address that already in a previous post? Am I writing in a foreign language?

I've already addressed all that in previous posts. Begin at the beginning to prevent recurrence. Even take the time to read the TITLE of this thread, that might give you a clue.

Just a word of caution, if this type of post continues, I'll just stop posting. As I wrote earlier, I'm not about to go through what Pete K went through. Unfortunately some will be penalized when I stop posting, but that's how it is.

Your response may be well-intended but it's UNWELCOME. Hope that's clear enough. I can resort to profanity and using mean-spirited words if that's what it takes. Need I have to resort to doing that???

Start your own thread if you want to share your expertise. Don't ruin mine by posting unsolicited and unwelcome comments. JUST STOP! There's really no need for us to become enemies. Simply comply with my stated wishes, that's all - How hard can that be?

There seems to be plenty of guys interested in my engine building approach; don't spoil it for them.

Jake

Originally Posted by Charleston2012

There are no aftermaket block for the LT1's. Dart was thinking, but dropped out. GM made some Bowties, which were 4.125 blocks, but good luck seeing that block show up.
So, unless you have an L98 car, the LT1 is limited to 30 over or a very careful 60 over bore. You can stroke it to 3.875 for a 396 with 30 over, but over that you are really spending money and time for some precision machining. Reher and Morrison are definitely the shop to accomplish this. But the gain wouldn't be worth the cost.

Originally Posted by cumbercr

I'm working with an L98. Didn't realize the LT1 was unique. I learned something today.

Originally Posted by cuisinartvette

jake its hard to know how to respond, you know exactly what you want here and how to do it youve done it a bunch of times...what to say though?!

Post up on the build when you get er started

Originally Posted by Charleston2012

The Dart Block is one of many great blocks available to you. A big engine, lots of head choices and , IMHO, a TPIS Mini ram and you are on your way to a very very fast Corvette.

Originally Posted by cumbercr

I have a set of AFR 195 heads, Super Ram and TPiS headers. I just wonder if the 195s are big enough for a 427 or 400 for that mattter.

Originally Posted by Charleston2012

If they are the new 195's they are pretty darn good out of the box. The old 195's are very good heads and with a porter like LE, for example, they can be made to flow really well for a larger small block of that size.