about how much boost can i run on a stock 225 on pump 89? I was thinking around 8 psi. about how much HP would this buy? what are some of you other turbo guys running for numbers? sorry about all of the turbo questions, its rainning outside and im excited about the new project!

With O-ringed block and copper head gasket, and water injection + intercooler?
40 psi.
Stock motor?
Don't know, 8 sounds safe.

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I agree with the 8 lbs, but 6 might be better. I"m inclined to go with 20 on the other motor, unless running alcohol, and then you would need a "blower"piston. Never got that high myself. The most I have run is about 12.

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Charrlie_S
65 Valiant 100 2dr post 170 turbo
66 Valiant Signet 170 nitrous
64 Valiant Signet
64 Valiant 4dr 170
64 Valiant 4dr 225

i was looking around the net at what people have done, i think im going to do a drawthrough with water/alco. injection. i think im going to start at 5 and work my way up till things get iffy. first, i need to get it built tho, any one got pics of turbo slants for ideas and insperation?

I am also putting together a Paxton /225 Slant. I have a stock + .030 balanced bottom end but big valves, 4bbl draw through, 3x2 headers. I was probably going to go with 8lbs. of boost. I am hoping for ~ 275 hp. My cam will be the big question. Good luck and let us know how it goes.

I would agree with Charrlie, 6 lbs would be be safe with out an intercooler but probabily not any more. I am working on a Turbo setup on my slant with an air to water intercooler. I hoping to run about 10 lbs of boost with pump gas.
I'll be be using a mega squirt computer to run the fuel injection and a T3/T4 hybred turbonettics turbocharger.

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1966 Signet
Turbo Slant Six

i have plotted all the numbers and plotted all the maps...email me a number and i will call and go over all the numbers and the correct turboes that can be used thanks GRT

how much power would 8 pounds add to a stock 225? somewhere i had heard that 8 pounds will add about 50% more power. is this true?

if you have the right turbo setup and engine setup, at 7 pounds you can achieve possibly a 50% increase..but all has to be right. if i get mine like a want it, it wil be a 225 hp 225cid (145 stock HP then with mods it will be about 160 hp and then PROPERLY turbo'd...about 230 hp at 5000 rpm but will figure in inefficiencies so i will boast 225 hp) GRT