I was thinking of using my spare (that runs good) 350 chev v8. I was going to buy a cam (advice needed), use the 305 heads on it (advice needed). I have a awesome running 305 but it don't have the power I expected.. It has a edelbrock carb, intake and comp cam. I was looking for any advice on what I should do.. I keep hearing bore the 305 to 335 or 327 ???.. stroker bla bla Thanx for any help anyone hear can give. thanx
I am using it as a playtoy to burn tires and maybe drag race once and a while (not 12 seconds or anything, just for fun) Hoping for a 14 second car. thanx.
Don't use the 305 heads on a 350 motor. The valves are smaller which will hurt more than help. Look up GM fast burn heads and see if you can get a set of those cheap. Put the cam, (I think it will fit, call Competition cams for comfirmation), intake, and carbeurator on the 350 as a base application making sure to put the lifters back in the same spot they came out of and see how it runs. Changing the metering (rods?) on the carb may be necessary because of the larger displacement of the engine.
...Ron
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68' Camaro RS
88' Firebird Formula
00' Mustang GT Vert
As RSCamaro said don't use the 305 heads. You can't bore the 305 enough to get much extra displacement and their small bore and resulting small valves in the heads, small ports, etc. is what holds them back. You already have an Edelbrock carb and intake, I'd get their Performer RPM cam IF you plan on getting your heads reworked or replacing them with a set of fastburns or similar. You could also try one of the newer grinds like the Lunati Voodoo cams or Crane Z-cams, but with their higher lift numbers for a given duration you'll have to pick conservatively with your stock heads as they won't work with lift numbers past about .480 without pulling your press-in studs out. Not to mention once you go much past that number you start needing to consider a higher stall speed convertor and lower gears, depending on what you're putting it in. I don't follow this group much anymore so I don't know what the specs are on your vehicle.
If you're on a serious budget there's not much more to do without getting into the cylinder heads, raising your compression, etc.
You could also say screw it and put your intake and carb on the 350, slide in a Crane #100172 camshaft (with a 106 lobe sep it rumbles like a massive cam but with 274 duration and .450 lift it pulls good down low), and sell it to someone else, then buy a GM crate motor. Used, they're getting cheap enough that it's almost not worth the hassle to rebuild an older engine for a regular street application. Hell, even new some of them are a steal...
Just some things to consider... If you do just want to throw a couple parts on that old 350 to wake it up that Crane cam is a sweet piece and it's cheap because it's an older grind. Typically it's about $130 for a cam and lifter kit, and on sale it's more like $100. Whether or not you'll get 14s depends on several other factors that I can't help you with without knowing your application. If you have the cubic dollars, any timeslip is available.
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