As much as we say there isn't an LT1 after market, Dart brought heads out for them and so did Trick Flow, so maybe it isn't as dead as we thought.

 

You should get several builds out of it on the stock bores and could even sleeve the block in the future when you run out of size - you will get your money's worth out of the block and could still sell it down the road for $$ even at an overbore size.

You just need 400SBC 4.125 pistons in the right compression height for your stroke/rod combo.

You should take some good pictures and post up more information during the build - I get to play with the Bowtie blocks for our race motors, but a LT1 Bowtie is a special occasion

 

Wish thats all I had in mine lol.

 

$3000+shipping+new pistons to get 17 cu in?

 

Exactly what I was thinking. Have to get one of those photo accounts.

 

+1
Some people have more money than sense....??

Or maybe his time is just worth alot of money...?

I don't get everything in life sometimes but I guess that's the way it's supposed to be.

More power to those with Knowledge.
-Ivan

 

Some people wouldn't be happy if they got this for free!!
I still have a complete LT1, which I believe should be a 4 bolt main engine, which I won't be using. So I can off set some of the cost by selling it.
There's the machine work on the old block, I wouldn't have to do, etc.
Besides there's NEED and WANT. I need tranportation, I want a ZR1. Somewhere in between is what I can afford. And I can afford this, so I'm happy!

 

shucks... I thought I'd get to see a 454 LT1 in the near future....

 

it would have been nice if that was an aluminum block

that's about the same price,

even the playing field with the ls a little

 

I have one of these in my '94 1LE. I have a 409 C.I. Motor and plenty to bore later. The only big thing with the LT1 bowtie block compared to a stock block is the cylinder wall thickness. Splayed main caps can obviously be added to a production block too. 402 C.I. is the practical limit on a stock production block in most cases. My Bowtie LT1 is a 3.875 stroke with a 4.100 bore. Out of the crate is was a 4.090 bore so we honed it .010. Looks like the one on Ebay is already 3.120. Definately a rare piece! I aquired mine from GM when we used to race in the SCCA World Challenge series.

 

And now TPIS has 200cc Dart heads. It's nice to see some people still doing the LT stuff. Seems like everybody jumped to the LS stuff and you can't blame them, but its nice to still be able to buy some nice stuff for the dinosaurs

 

so much for them being rare, now everyone has one!

 

with the bigger bore why cant you use some of the bigger valved SBC heads and convert them over to reverse flow cooling?

at what point do you just say F it and get a SBC or LSx? you'll need an aftermarket ECU to turn over 7000 rpm anyways. seems pointless to stick with an LT1 if you're going for some big power.

 

I have AFR 210s so I figured those would be big enough lol I don't take mine over 7,000 RPM typically so the factory PCM is not really a big deal. I used the block because we had it and weren't using it in the racecar back then so it snowballed from there. I originally was just going to do a cam & head engine lol.

I've only seen one other Bowtie Block and it's still in the racecar, the one on Ebay makes 3 that I know of. I also think there was one in Chevy's Concept ImpalaSS with a 6speed but don't remember. I thought it had a 420 C.I. LT1. If I remember, I'll dig up my Sema folders from that Eras GM breakfasts.

 

whats the max bore of these blocks?