Thread: Building a Time Bomb...

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I picked up a running 305 and been using it as a mock up engine in my 47 Dodge Pickup. I'm currently building a 350 for the Dodge which is being topped off with a Weind 144 Blower. The Dodge (Fingers Crossed) will be road worthy in the spring and shortly after the 350 will be done.

Crazy/Dumb Idea...

How long do you think the 305 would last with the blower? I'm thinking as long as I dont beat on it too hard I can get the summer out of it.

Thoughts? Worth the price of gaskets to find out?

Originally Posted by joe_and_jeep

I picked up a running 305 and been using it as a mock up engine in my 47 Dodge Pickup. I'm currently building a 350 for the Dodge which is being topped off with a Weind 144 Blower. The Dodge (Fingers Crossed) will be road worthy in the spring and shortly after the 350 will be done.

Crazy/Dumb Idea...

How long do you think the 305 would last with the blower? I'm thinking as long as I dont beat on it too hard I can get the summer out of it.

Thoughts? Worth the price of gaskets to find out?

Yeah !!! Why not ??? Go for it. The original Isky 671 street supercharger drive and manifold kits when they came out in the late 50's and early 60's were for 283 chevys, The isky kits stayed around for a long time. So it shows you how robust the small chevys were, the SBC's had a lot of overengineering put into them as a safety factor. So a 305 with a small blower in good condition low boost and a gasket kit should work okay. It will teach you proper street manners with a blown motor.

305's have light heads that crack. Other than that, they're like any other SBC. Same crank as a 350, should stand your setup okay, depending on how good a "runner" it is.

I don't know.

I guess the worst thing that could happen is a catastrophic event resulting in you being mamed or killed. I think you are asking for trouble. Personally trouble finds me way too easy for me to go looking for it. Paranoid? Maybe a little .........

Just a thought ............

Kitz

Originally Posted by R Pope

305's have light heads that crack. Other than that, they're like any other SBC. Same crank as a 350, should stand your setup okay, depending on how good a "runner" it is.

Dont all chevys have light head castings that crack,vortecs crack ,305 crack
,double humps crack Your in no immediate danger.If you are new to blown engines ,this might be a good thing to learn fuel ratios on,rather than your exspensive motor.

guy i know built his own double turbo syst out of 2 6.5 turbos on a stock 350.He told me the best thing he bouhght was a fuel ratio meter which he has mounted in his cab. he advised it took all the guess work out of jetting it.
he was running 12.5 s in the quarter in a 1/2 ton and its a stock engine.
i would suspect that it wold help anyone who is messing with jetting especially under pressure.

well, dosn't a 305 have 9.5:1 comp? if so, only 4 PSI is safe on a good running engine, the least that a 144 will put out is 5-7, and because the 305 heads are low flowing, might be more like 7.

Wont be my first blown motor. My 68 is the same thing with a 350/144 Blower. I got a few sets of 350 heads in the garage, I know I have one set of 1.94, but I dont remember the casting. Thinking 881 or 883. They were rebuilt not long ago. Worst comes to worst I destroy a 305.

A blown 305 would be a great way to use up some of those smog low comp 350 heads we all have lying about. And as you say, if it scatters, what's one 305 more or less? You'd be doing the world a favor, and have a ball doing it! (Just pray none of the schrapnel comes up and wipes out the blower!)

C-mon now ease up on the 305,they will beat alot of over cammed and over intaked 350s.The 305 if fine for what it is,after all if were lookin for track power the 350 aint that big a step up.!!Unless thats a magical 45 cubes

Originally Posted by joe_and_jeep

Wont be my first blown motor. My 68 is the same thing with a 350/144 Blower. I got a few sets of 350 heads in the garage, I know I have one set of 1.94, but I dont remember the casting. Thinking 881 or 883. They were rebuilt not long ago. Worst comes to worst I destroy a 305.

I have used a few of those heads on my blown motors in the good old days. Nothing wrong with them. As long as you dont go mad on the boost pressure and overboost, they are okay. Building up a blown 383 now, and I am using those heads. All I am doing is porting them out myself, to get the airflow up.