OT--Has anyone built a 377 sbc

377s run like a big 327. reallly revs. If you don't like those spacer bearings you could pick up a Eagle crank made on 400 journal sizes & bolt it right in.

 

I just built a 377. I started with a SBC 400 1970 #511 4 bolt block punched .030 over.
I bought a***** steel crank. It utilizes std. 400 mains & std. 350 rod bearings. NO SPACERS NEEDED!!! The spacers to me is just a spun bearing waiting to happen. (IMO)
I also used 6.00" H beam rods, KB flat tops, a pair of Camel Hump 2.02's , a Comp 295 cam.
We just broke it in on the run stand with an HEI & Q-Jet. Sounds very good & responsive.
This weekend it will be going in my Chevelle 2 dr. Wagon with MSD and a Dual Top.
Will update if it "Grenades". I would like to dyno it to what kind of HP it has.

 

All this is new to me, trying to gather some information on building a 377 sbc

 

I have a 1981 buick regal and would like to put a 377 sbc in it, where do i start? should i go with a 350 block or a 400 block?

 

I fill the steam holes in the block with JB Weld I really pack it in. Never have to drill holes in the heads. Oldwolf

 

The burning between the cylinders was due to movement of the cylinder bores. we fixed that problem by using a 3/4 pipe plug (with steam hole) in the deck holes. I build a 15 to 1 compression dirt modified 377 using 1971 flat top 400 pistons, 350 rods, custom made main bearing spacers (machine shop in Lincoln , NE) 461x heads with 202/150 valves, 577 lift cam with 300 duration. Ran that motor for 5 years with no problems at ALL! 1 to 2% leakdown after 5 years. Tuning and making sure the oil flowed properly through the engine was the key to long life. Oh, it would turn 6800 all day long with only the rods and pistons balanced.