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  #31 (permalink)  
Old 02-04-2018, 02:00 PM
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GM turbo'd that 10.5 compression ratio stock way back in 1962 by adding water/alcohol injection...


1,000 HP for $1,000... LOL !!!:

http://www.hotrod.com/articles/ccrp-...l-block-engine
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  #32 (permalink)  
Old 02-04-2018, 02:45 PM
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Quote:
Originally Posted by A.J. DeRousse View Post
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.
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Old 02-04-2018, 03:01 PM
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Very true I didnít even think about that. Iím sure he does have at least 1 decent set of heads I can use. Now I did reading that a blow through carb would be needed. But also read that if not going over 8psi that wouldnít be necessary? Tell me if Iím wrong though. Or if I used a carb enclosure I could stick with the stock carb?
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  #34 (permalink)  
Old 02-04-2018, 03:06 PM
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The Olds link I put above shows a pull through (side draft) carb. turbo set up...
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Old 02-04-2018, 04:05 PM
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Quote:
Originally Posted by A.J. DeRousse View Post
Very true I didn’t even think about that. I’m sure he does have at least 1 decent set of heads I can use. Now I did reading that a blow through carb would be needed. But also read that if not going over 8psi that wouldn’t be necessary? Tell me if I’m wrong though. Or if I used a carb enclosure I could stick with the stock carb?
Yes, it's necessary and here's a newsflash - you won't stop at 8 psi - trust me. Here's some good reading : Build a Blow-Through Carb for Less Than $50 - Hot Rod Network

Of course, if you can afford it, a CSU carb is the way to go.

edit : just noticed - I think we are off the original topic/title of this thread - lol
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Old 02-04-2018, 06:25 PM
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So from the recommendations Iím going to turbo the 305 with the heads off a 350 to lower the compression. And once we get that together this summer hopefully. We are going to start building the 350 for turbo in the fall to be ready by next summer.
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Old 02-04-2018, 06:42 PM
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So from the recommendations Iím going to turbo the 305 with the heads off a 350 to lower the compression. And once we get that together this summer hopefully. We are going to start building the 350 for turbo in the fall to be ready by next summer.
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Old 02-07-2018, 09:47 AM
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$$$

Quote:
Originally Posted by AutoGear View Post
My drifting customers that compete...are all 600+hp LS transplant guys. But; you can have fun with less, you just need way more gearing to get the wheel speed up. Wasteful of tires and money? One could argue that of any competitive racing endeavor. We shouldn't cast dispersion upon what others do in the spirit of hotrodding, racing and the pursuit of fun. If it ain't hurting you, don't hinder them.
If you love a sport why not spend some money? Hell I promote Physique contests.Women and men spend thousands on coaches, training, supplements and the cost of competing with travel and so forth. No different. Golf is like on average 75.00 for 3-4 hours of playing.
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  #39 (permalink)  
Old 02-07-2018, 11:48 AM
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Quote:
Originally Posted by arnoldsel View Post
If you love a sport why not spend some money? Hell I promote Physique contests.Women and men spend thousands on coaches, training, supplements and the cost of competing with travel and so forth. No different. Golf is like on average 75.00 for 3-4 hours of playing.
Golf and physique contests don't pollute the air other people breathe with excess tire smoke... like drifting and burnout contests do...
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