I have a port and polished 225, head milled .070" , rebuilt last spring, It is now well broken in and I have decided to turbo charge it with a blow thru set-up. I own a garret t25 and I am currently modifing the stock exhaust manifold to fit a t25 flange from turbo city.

At this time I have to say I am reluctant to go to an efi set-up. I do not know if a stock 1920 holley would be able to provide the fuel necessary with larger jetting or hold-up to a spike of 8-10lb of boost.

My questions are:

Should I keep the stock 1920 holley, and modify it for the turbo? What modifications would be suggested if so?

Is the a better carburetor alternative without me paying an arm and a leg for a matching intake? What modifications might be recommended?

Also do I have to change my plugs to avoid preignition? What plug suggestions do you have?(I have tended to go autolite 985w/o the washer)


I also would like to state my thanks for the great forum we have. I do not often write on it but I often sit and read what you guys post and have posted in the past.

There is a ford running a holley 1946 as a blow thru, and it works good.
Should fit a slant easily enough?

I would go with a super six setup and a carter BBD. I would at least use a better carb than a Holley 1920 and definitely not a 1945 or a 1946.

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82 D150-225/727
02 Dakota-3.9/5 speed
87 GMC C7000-8.2 Detroit Diesel/5+2

I don't know about the Carter BBD, in a blow thru, but it does not work in a draw thru configuration. The needle and seat does not allow enough fuel flow and the float bowl runs dry.

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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

Easy fix, Grose-Jet CT-13s large-bore high-flow fast-response inlet valve assembly...if you can find one! I used to be able to get these in hand a week after ordering them from the maker, D&G Valve Co in Stoneham, MA, but they don't answer their phone any more, as it seems

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一期一会
Too many people who were born on third base actually believe they've hit a triple.

Thanks for any feedback guys,

I guess I will give-up on the idea of a low tech, high performance ride and stick with what I know best, fuel injected turbos. I will be setting-up a megasquirt system with my turbo. I have enough new spareparts i.e. injectors, pumps, throttle bodies why not?

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http://www.cardomain.com/ride/1635801