SBC replacement main caps - Stock

[Robert Swartz]

Thanks guys. You answered my question, in spades. There's a lot of very good information there.

Yes, it is an 010 block with the 020 on the inside of the timing cover. It is a 4 bolt main block. I believe, I'm going to put this block back and save it for a bit. I'm now armed with some good information and have an idea of what it will take to make this an acceptable part.

[trmnatr]

Originally Posted by Robert Swartz

Thanks guys. You answered my question, in spades. There's a lot of very good information there.

Yes, it is an 010 block with the 020 on the inside of the timing cover. It is a 4 bolt main block. I believe, I'm going to put this block back and save it for a bit. I'm now armed with some good information and have an idea of what it will take to make this an acceptable part.

The 010/020 I have, is thick enough to go 4.100" safe, IIRC the thrust walls were at least .150" @ 4.1" bore, I'm only 4.061"-4.0615"

Not all of them are though, some were just very good and some were not.

IMO, all this work needs to be done to the blocks regardless which casting number

[trmnatr]

Originally Posted by Robert Swartz

Thanks guys. You answered my question, in spades. There's a lot of very good information there.

Yes, it is an 010 block with the 020 on the inside of the timing cover. It is a 4 bolt main block. I believe, I'm going to put this block back and save it for a bit. I'm now armed with some good information and have an idea of what it will take to make this an acceptable part.

I will give you an example of what an engine did on the track I did, it was our team engine (then he left the team, it was fair for him to leave with a running engine IMO)

1980 Camaro @ 2,850 pounds race weight
Powerglide with 5,200rpm stall
12 bolt with 4.88 gears and Mickey Thompson 32x14 Tires

Engine, GM 509 Block, 4 bolt main (weaker 400) with GM main bolts
- GM block, filled with Hardblok, all mods as suggested below
- GM Nodular Iron Crank
- King Bearings set @ our clearances
- Flat Top Forged Pistons @ .0075" Clearance
- 1/16" 1/16" 3/16" rings
- Our final gone finish we do
- GM 291 Camel Hump Heads, 2.02"/1.6" valves installed, bowl ported due to larger valves, exhaust runners ported to smooth out, chambers are not ported, intake runners are not ported
- Crane Solid Cam 292/300 @.020" 256/264 @.050" .545"/.563" 105° lobe center installed at 102°
- 1.46" Crane Springs 160 seat and 400 open
- Victor Jr.
- 1000 Annular Modified by us

In the Camaro it ran 10.teens @ 131-133mph every pass. Some videos below. When he decided to part out on his own, he took the engine and put it in the Dragster @ 1,750 pounds race weight for some 8.60/8.70 consistent ET's

Here are the videos,,,
Pass


Cold Start


Running Clean