[ericnova72]

The engine will be going into a 83 c10. It has 700r4 transmission with a shift kit. The build is going to be for drag racing and maybe some trips to the drift pit. So what I’m hearing is definitely a bigger carb and a new intake woud be a necessity.

Performer RPM will be the better intake considering your vehicle goals, but it does need the bigger carb.

 

[ericnova72]

With that being said any recommendations on how to build a 350 that would be sufficient for that?

Deciding straight off the bat to build it as a 383 stroker would be the first thing to do, forget all about a little 350 cube deal. cost won't be much different than rebuilding and remachining all the stock stuff, so it makes more sense to do a stroker.

The Comp 292 Magnum cam is not likely to be the best choice in either engine size for this job.

 

[ericnova72]

Putting Drifting into the picture means you will also need to be looking at a very good oil pan and windage tray set-up, nothing cheap will be good enough.

Quickly changing G forces wreaks havoc with oil control, anyone serious on drifting is using some type of remote belt-driven oil pump. (With the exception of the LS engine guys).

This is sounding more and more like 5.3 LS engine/Turbo swap candidate rather than the old SBC deal. The SBC is going to cost you more in the end.

 

[ericnova72]

Vinnie isn't being insulting, but rather making sure the young man understands the error of his way that he described how the build is going. He's trying to stop him from 'putting good money on top of bad'. At least that's what I see he's trying to do.

OP - I have to admit that you're in a great spot get some forced induction education. If your 305 is a sound motor, then there is no better time than the present to become addicted to boost. About all you need is a boost ready carb. I'm not familiar with anyone boosting through an Eddie, but all that is needed is a 2 barrel 390 Holley with some basic mods, a basic mod to the distributor and to boost reference the fuel pump. After that a chinesium wastegate, BOV and small turbo. All of this can be had for well under $1000 and perhaps $600 if you can handle the carb mods yourself.

Learn how to tune your fuel (carb) and spark on the motor that you aren't in love with. Then save to build 600-800 hp drift motor.

Sometimes it's just as much fun to 'run what you brung' :thumbup:

This sounds increasingly like the smart move...turbo the 305 along this plan, Amazon or Ebay budget chinesium turbo kit would be easy due to your huge amount of underhood space...once you've learned and gotten familiar with Turbo workings you can do a better base engine and refine a cleaner fitting turbo package and have the truck you want that will drift and still not be an embarrassment at the dragstrip.

EngineMasters on YouTube and Hot Rod magazine have both done features on that low cost Amazon/Ebay turbo kit and provide details on some of the pitfalls and how they sorted it out.

blow up the 305 and your not out anything of great value and nobody will care, just slip another SBC under the turbo plumbing and carry on.

 

[ericnova72]

I have considered boosting the 305. The only thing is we have a 10.5.1 compression. Which is way to high for boost. So I’d have to lower it to at least 9:0:1 or 8:5:1 preferably

Just change the heads out for some 76cc large chamber 350 heads, which are the most common SBC items in the world practically. It will drop you in the area of 2 full points of compression.

these are typically found on any 1972-1985 car or truck 350. almost dime a dozen, you can likely find a decent used set on Craigslist or similar, or check with your local machine shop, they will often have rebuilt pairs of these sitting on the shelf, from customers who never return to pick them up, tyhat you can get for cheap.

That 350 a family member is letting you have most likely has a set of these sitting on it right now.
And they are pretty much worthless for any real performance work on the 350 when you build that later, so it's a win-win.

I'd use the 1.94" intake valve size versions if you can finds them, With a turbo blowing through them it will minumize the shrouding effect the small 305 bore will have with the bigger 1.94" intake valve, which is usually considered a problem on naturally aspirated 305 builds, but the turbo cancels that effect.