sbc 400 in a 97 suburban

[DGA1]

Found it! I guess I did not look as hard as I thought. I was figuring machining alone would cost me that much...that's hell of a deal. I just might sell one of my motorcycles to make room in the garage for a slow build.

http://www.summitracing.com/parts/SUM-150100/

 

[MOBS]

Yep, that's it, the 150100.

 

[Aloicious]

I don't have any proof, but I've heard that the 150100 is actually a rebranded L31 GM block too...I wouldn't have a problem running one of those, although it would be wise to double check the machining, measure bores, check for straightness, etc...a shop shouldn't charge too much just to check it out. I'm just OCD and I don't always trust pre-machined stuff...

 

[DGA1]

It's definitely a remanufactured block.

Is there any difference between the L31 block and the rest of Gen I SBC blocks aside from the 1-piece rear main seal?

 

[Aloicious]

it's also a factory roller cam block

 

[DGA1]

That's right...forgot about that little feature.

 

[Aloicious]

heh yeah. it's a nice perk

 

[MOBS]

Yeah it's an L31 block that's been fluxed/bored/clearanced/etc. Good thing is it's a 4-bolt block....bad thing is it's a 4-bolt block....but I'm not going to start a heated discussion over how 4-bolts have weaker mains on the block side due to extra metal being removed due to being drilled and tapped for the extra 2 bolts. I've always preferred 4-bolts, but boy did I hear it one day when one of those theoretical geniuses came into the shop wanting us to make beefed up 2-bolt caps for a 396 he was having built off an L31 block....I wanted to tell him there was only room for ONE theoretical genius in that shop....and he wasnt it

 

[Tempted]

Tell him to build a 6 bolt LS if is worried about it.

 

[MOBS]

^Good idea!!! silver, you should build an LS 7.0....nou git 'er did!!!