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twin turbos on 330's super budget build Which turbo's?

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twin turbos on 330's super budget build Which turbo's?

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Old 02-08-2019, 04:36 PM
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Default twin turbos on 330's super budget build Which turbo's?

I want to use ebay internal wastegate turbos on my 330's The engines have the larger oval port heads. Im going to mount them to Gil manifolds. I want to do a low boost (5 lbs, maybe 7 lbs) no intercooler. This is mainly for the WOW effect at the dock. Im am thinking that 500 hp is a safe number on the stock blocks. Ive looked at HX35's but not sure if they will even spool at 5psi. Anybody have suggestions from experience. Id like to do internal wastegates so I dont have to deal with that plumbing. This is going in a 1978 30' Scarab.
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Old 02-08-2019, 05:06 PM
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Easier way to make 500 hp with 454/330's and less expensive and headaches. Just my opinion.
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Old 02-08-2019, 05:14 PM
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Yes, I know I could do heads, cam and intake, but it doesnt have the same effect when you tell someone you have twin turbos
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Old 02-08-2019, 07:33 PM
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What affect? Laughter that you have a twin turbo setup and only make 500hp. Sell the motors and buy stock carbed HP500
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Old 02-08-2019, 08:26 PM
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how are you going to keep the turbos cool??
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Old 02-08-2019, 08:39 PM
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Did you put forged pistons in it? Mercury uses forged everything in a 365hp. I don't think it will live. Specially no intercooler.
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Old 02-09-2019, 01:15 AM
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I only want to make 5 psi, so I don't need forged pistons for that. A pair of hp500 would cost more than a pair of turbos
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Old 02-09-2019, 01:20 AM
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Originally Posted by phragle View Post
how are you going to keep the turbos cool??
im going to make water cooled heat shields very similar to the Rajays on my other boat
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Old 02-09-2019, 09:51 PM
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Like 14 Apache mentioned. Remember the 454/330 pistons are cast as well as crank and 3/8 rods. My guess is you'll have nothing but headaches.
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Old 02-10-2019, 12:36 PM
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Originally Posted by phughes69 View Post


im going to make water cooled heat shields very similar to the Rajays on my other boat
I can provide you with water jacked risers, and water jacketed internally gated turbine housings for GT30, 35, and 37 If that will help you out.
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Last edited by Precision; 02-10-2019 at 12:55 PM.
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