Motor Vehicle Maintenance & Repair Stack Exchange
Motor Vehicle Maintenance & Repair Stack Exchange

Questions tagged [sbc]

Small Block Chevy - referring to the line of Chevrolet V-8 engines

The small-block Chevrolet (SBC) engine is a series of automotive V-8 engines using the same basic small (as compared to the big block Chevrolet engine) engine block. Retroactively referred to as the "Generation I" small-block, it is distinct from subsequent "Generation II" LT and "Generation III/IV" LS, and "Generation V" (LT/EcoTec3) engines. The Gen-I SBC was produced from 1957 to 2003. Different displacements were produced, including 262, 283, 302, 305, 327, 350, and 400 cubic inches.

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Is the unreliability of the 400 Small Block Chev an Urban Myth?

The Gen 1 Small Block Chev gradually grew to 400cid. To achieve this massive volume the bores were siamesed and the conrods were shortened.The engine when produced in passenger car form had the same HP rating as the popular 350 but it made more…
Autistic
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Should I replace piston rings on chevy 350?

I recently acquired a chevy 350 manufactured in 2015 for free because of some crank issues. I'm in the process of rebuilding it and have finished the disassembly of the engine. The engine itself only has 200 miles on it would it be necessary to…
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Would bored out 307 need new heads

I have a Chevy 307 with casting number 3970020 and everything I've read says this particular block can be bored out to 4" effectively making it a 327. I plan to have my machine shop test it and make sure this is a safe bore. If I do bore out the…
CyrodiilSavior
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Roller rockers to a stock valve train

78 Nova but the engine is from a different car; casting # V0707CMH. I have a 350 with 305 heads. Stock valves, pushrods, cam, and lifters. The nuts on my stock rocker arms are in need of replacement; all studs are same height. I was going to just…
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Quadrajet issues

1970 Chevrolet C20 Custom Camper Pickup SBC 350, Quadrajet carburetor I've been having some issues I believe are float related. Wanted to see if my thinking is correct. Issue #1 - takes a bit of cranking to get it started after it's been sitting. …
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Grind/Crunch Sound Near Alternator (video)

1983 Chevy 305 small block. Hearing a grinding sound near the alternator. Is this a bearing or something grinding near the belt ? Not exactly sure how to diagnose. Video: https://www.youtube.com/watch?v=UuYaW0GNYvo&feature=youtu.be Thanks.
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Oil pressure tops out at 40PSI when hot

I've just rebuilt a small-block chevy engine (Chevrolet 350CI v8) for marine. It's been taken through the break-in with 5w30 oil, and now has 5w40 (mfg recommends 15w40, but I could not find that in a low detergent oil, I also run it in a colder…
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Will a radiator still work properly if laid on its side?

So basically I made the decision of investing in a 1987 MK3 Supra with an 350 small block engine swap. The current radiator is not cutting it and the vehicle overheats after 10 miles of driving when its less than 40 degrees Fahrenheit out. Any…
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Newly built Chevy 350 won't start

I've just completed rebuilding my Suburban's 350 into a 383, and feels/sounds so, so close, and I'm not 100% sure what I'm missing yet. I think it might be just not getting fuel, but then I did some reading about people having the distributor put in…
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Can siamesed bores go to sea

Some petrol engines have siamesed bores which can cause overheating problems on land. The gen 1 cast iron small block 400 cid chevy motor is a well known example. Often engine rebuilders prefer making 383 cid with 350 non siamesed bore and 400…
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SBC electric choke issue

I have a 1969 Chevrolet C10 1/2 ton pickup with stock 350 small block engine. Don’t know much about internals of engine as I purchased the truck with engine in it and not much info. Had a Quadra jet carb that was leaking and I put a 600 Holley with…
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Inline fuel pump loses prime only when engine is running

I'm working on a boat (malibu responise LX) with a small block chevy engine, EFI, and an inline fuel pump. After much diagnosis, I replaced the (inline) fuel pump on the premise that a seal had failed and air was getting in. It was losing prime…
Brydon Gibson
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