i got a good deal on a crate engine 305 got it realy cheap but when i chek the number on the head i found that was a tbi engine..can i just chage the intake and put a carburator one on it and put that engine im my 1981 camaro..it is the only thing to chage or i will have more problem whit it..and what about the fuel pump.tanks to help me i realy need some help

 

These are the items I can think of for the moment on the new engine, year of new engine?:
1. On the intake side of the head, install a bolt and check to ensure the bolt is perpendicular to the surface. If it is, a standard manifold will bolt up. If not at a right angle, then a Vortec intake will be needed.
2. Check to see if the block has a fuel pump boss. If it has a plate over it, unbolt the plate, get a fuel pump rod, f/pump plate, and fuel pump and bolt on, or transfer from the older engine. If it has no provisions for a fuel pump, then an electric pump will be needed, aka, Holley 801. Use a relay for f/pump power and 14GA wire.
3. Flywheel bolt holes, measure diameter of the bolt circle. If 3.5 inches, then you can transfer the older flywheel, 2-pc rear seal. If 3 inch diameter, then 1-pc rear seal, buy a new flywheel/flexplate.

All the rest of the specs are the same between older and new.
Maybe other members wil add their comments.

 

Simple answer to your question, yes you can. Vortec V8's (truck engine only) came out in 1996, so if the block is date coded older than that, it's not a Vortec. But 96 and newer still doesn't mean it's a Vortec either, if it's not a truck engine. If it is a Vortec, you need to use a Vortec specific intake manifold due to the port heights being incompatible.
1987 and newer heads (non-Vortec center bolt valve cover) have the two center intake manifold bolts straight up and down, as opposed to older ones that were angled with the rest. You can "modify" (straighten) those bolt holes on the old style intake with a drill to use it, or get an 87-up intake for it.

 

What is the casting number on the back of the block. It will tell you more then the head numbers. Any heads can be bolted to a 350 block as long as its a gen.1. On the driver side lower back of the block it should a casting of 5.7L or 5.0L that will tell you the size of the motor. The vortec heads will have 4 bolts on each side of the intake earler heads will have 6 bolt to hold the intake on. 86 and newer will have the center bolt valve covers.

 

i have to go check for the casting number of the block but the engine is not at my place so gonna have it tomorow..but if its a tbi engine ...i found some head from a carburator 305 casting number 354434,if i put those on my carburator intake should bolt right on?What dod you think?

 

What's the head casting #'s on the engine you have?
Those 434 heads were used on 1975-79 262, 267, and 305 engines.
62cc chamber, 1.72" intake and 1.30" exhaust valves. They're not performance heads, and I can't say if they're any better or worse than the ones you have now without knowing what you have.
But yes, those heads would bolt right on, and so would your intake.

 

I dont know what all the Vortec talk is about. Never been a TBI Vortec motor. So your gonna need a intake and you will have to hog out the center four holes due to the angle change talked about earlier. They due sell intakes for those heads and some newer intakes come set up for both styles. Then there are all the Vortec set ups which I believe have nothing to do with your engine.

For soem insight into TBI motors the heads on both the 305 and 350 are about the weakest of all chevy heads. They added a big old chunk of metal in the runner to induce swirl. They are often called swirl port heads.

If you are going to buy heads for your 305 there are better heads out there than what you posted. They did make a Vortec 305 most dont know it but the heads have the same port as the 350 head but have a different chamber. Same valve size I think. I can measure a set if I needed to know for sure. I bought a set of vortecs for a 305 project that never turned out. Basically the engine wound up being a 350.

 

The 305 vortec casting #520/059 both have the ramp in the intake side. The heads are not worth the time ONLY the 906/062 350 castings or of any value. If you want to use a better 305 casting then the HO head from the SS monts are the one to use. They have the 1.84 intake and 1.5 exhaust valves and can be ported for a little better perfomance. I would sell the motor and get a 350 for a starter platform and go from their. You will never be happy with the 305 unless you just sit and look at it in the shop.

 

i know its not the best engine but got it from really cheap..alllthe bottom its brand new crate engine just need to doo the head ...find out it was a tbi engine...and I got those head 354434 rebuilt never used for 150 for the set..so will make me a good running engine for under 1000$.that gonna make the trick if I can make the carburetor fit on it until i can rebuilt my 350 I got in the Camaro right now

 

Nothing wrong with a strong 305. Like I said I was gonna do the one in my truck because it is what I had. As for the bump in the 059 castings I would have to lookk but I dont remember it. The bump YAV8 is talking about is the swirl bump I was talking about. A big chunk of metal in the middle of the runner doesnt do much for flow. I agree the HO 305's are good heads as well. Many have said the 059's can be used as well. I'm not talking about full on port work, just bolt and go. Maybe some minor DIY gasket matching and some valve unshrouding.

I had a 305 87 Camaro that was no joke on the street. I never raced it but it had a flowmaster single in single out exhaust for a full on sleeper set up. My thoughts are is it a roller motor and if not does it have provisions for a roller cam? The car I'm talking about had a roller. At one point it had a ZZ4 cam just because it was free. Then after I stepped up to a Lunati roller and it woke up for real. Enjoy it, abuse it, change the oil and take care of it and no one but you will know its a 305.