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HybridZ

305+holset hx35


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Well I wanted To post my engine set up for feedback. I started out with a stock 1978 Chevy malibu with 80,000 miles with a 2 barrel 305 with a fresh head job(got the car for free) removed engine and trans (turbo 350). cleaned and painted. Added a performer intake and 650 edelbrock carb. hooker shorty headers, new 50,000 volt hei.(all parts laying around the shop) still free. I installed it in the z with homemade motor and tranny mounts. Now as I am still waiting for my painter to have time to do my paint job I keep running into ideas. I mounted a hx35 holset turbo to the side of the engine(off of a 99 cummins I just did a twin set up on) turbo only has 60,000 miles.I built a top hat for the carb out of some scrap aluminium. Now I have to order some mandrel tubing to do the exhaust. 2 1/4 to the turbo 3" out (is this enough ?) thru a bullet 3" muffler.I also need to Get a blow off valve. and and a wastegate(hx35 has a internal wastegate set at 19 psi, way To much) want 5-10 psi adjustable. My thoughts for the fuel system is to get a race mechanical fuel pump 13-14 psi (good for a max 10 psi boost). Edelbrock has one. I have a areomotive boost regulated fuel pressure regulator. anyway the engine probably tops out at 5500 rpm and has low compression factory so I think this set up will work, only looking for about 300-350 crank hp.

What do you think?

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