JakeJr

Gauging Interest in "BIG" CID LT1 Block

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Yesterday I called Dart to get their published flow numbers on a set of Dart heads I recently bought.

In the conversation with the Tech Support guy, he mentioned that Dart is "considering" casting one of their SHP blocks to become, essentially, a BIG CUBIC INCH LT1 block.

Dart would make the necessary modifications and cast the block to take the LT1 to the next level, but management was concerned about whether there would be enough of a market to defray the costs.

When I mentioned 4.125 bore as standard, his response was, "Oh, a 4.125" bore would be tiny compared to what Dart's considering".

So based on that, we're talking over 454 cubic inches with the new LT1 block which would accept all the LT1 accessories; including heads, intake manifolds, starter, alternator, water pump, Opti, power steering, etc., etc. He mentioned that it would probably be a two piece rear main seal arrangement.

Now, I didn't get many more details, like probable cost, etc., only that company management would have to gauge the demand before agreeing to move in that direction. Remember, this is only in the "consideration stage" right now.

I told the Tech guy that I'd post a thread like this one to see just how many guys would be interested in buying such a block. So if anyone's interested, post a response here and the Technican will review what's written and pass on the responses to management.

I intend to post this thread on several other Forums, too.

Just thought it might be of interest to some.

Jake

West Point Rocks!

five7kid

iTrader: (14)

The LTx swap forum is the appropriate place for this.

NemeSS-TyranT

iTrader: (1)

easier and cheeper to build a little m with 23* or 18* heads
who would cripple a 454 with lt1/lt4 heads and intakes.
not too mention opti/wp issues.
no im not bashing, ive come from a 10sec. 383 lt4 and turbo lt1
have replaced over 30 optis to date. got down to undr an hour with new wires remove and replace.
i recently got rid of a box of opti carcasses i had taking up space.

mw66nova

iTrader: (13)

the lt1 just has no real advantages over a simliarly built genI motor, so i don't really see this as a good idea, but that's just my thoughts...you can easily get the same kind of power out of a fuel injected sbc with a miniram or a HSR than you can an lt1/lt4.

at this point, i'm not even sure an lt1 swap would be prudent unless you were just wanting to be different, or had the lt1 stuff handed to you for free.

Firebat

iTrader: (7)

If you start building a LTx this big, you're going to make it so that it runs off of a LSx computer or do something to get rid of the opti which adds cost. Then you're going to want to buy good GEN I SBC heads and have then converted to reverse flow or buy aftermarket heads and then port them. Then have a SBC single plane intake converted to LTX if you have LT1 heads. It starts to make more sense to build a SBC, BBC, or LSX at this level. Doesn't mean I wouldn't consider it though.