Chevy small-block 305?

[68 Stang]

I was wondering if the Chevy small-block 305 is a decent engine. I had heard that it was absolutely horrible, but I figured I would get a few more opinions before I gave up. It would have a cam from a 350 in it, but no other major mods. Thanks.

[danno_SS]

The Chevy small block 305 was the work horse for GM in the 80s.
It was used in Z28s for quite a few years. Here's what they managed to get out of them:
1982 Z28 5.0L (305CI) -165hp(CFFI)
1983 Z28 5.0L - 190hp(4bbl High Output Carb)
1984 Z28 5.0L - 190hp(4bbl H.O.)
1985 Z28 5.0L - 215HP(Tuned Port Injection)
IROC-Z 5.0L - 215HP(TPI)
1986 Z28 5.0L - 190HP(TPI *new emmissions requirements)
1987 Z28 5.0L - 215HP(TPI)

I think with ported heads and a good cam you might be able to get 280HP out of it. Try asking third gen owners about them. I'm sure they can provide much better insight.

[Darth Cypher]

Try www.thirdgen.org , it's more popular to mod a 350 than a 305 but it can be done. It's all what you want in the end. I like my 305 and it's a TBI. Check the site out though, lots of info.

[68 Stang]

Well.... Thanks for your numbers and advice. The numbers aren't bad, but I expected a little bit more. Maybe I'll switch over to the Ford 302, they are said to be stronger engines. Thanks

[94gpse]

I have an 87' z28. I think that the 305 is junk. Don't bother wasting any time or money on one. For the price of rebuilding a 305 you might as well get a 350.

[Chevyracincamaro]

general concensus on the 305 (i believe) is that it was a poor choice for the maro. however if you would like to talk to 92RS i believe he will tell you that the engine can make some serious power, if you know what you're doing...

[1992RS]

With the proper parts the 305 can be a contender. I pushed better than 400hp out of mine. Those numbers that where posted where the "conservitive" stock numbers. If your going carb then I'd get an edelbrock performer rpm intake a holley 700 vacuum secondary, edelbrock performer rpm cam or comp cams extreme energy cam with the same lift, world products torquer 305 heads, roller rockers, and if it's a pre 87 block get it machined for roller lifters. Long tube headers and true dual exhaust with flowmaster 40s. That with the right compression will put you over 300hp.

[zboom86]

don't tell me ur puting a GM in a Ford please not dude for the sake of GM