The numbers i have found on the block are 14010207 which means its out of an 80 to an 85 truck according to a quick google search. Also on the motor are CFD207 and H36201...

I need to know if this motor will swap out in place of the old 305 thats in it...PLEASE HELP. havent picked the motor up yet dont want to be stuck with a worhtless motor.

--Also, any idea how much this motor should put out? it will either be run with an aluminum eldebrock intake with a holley 650 double pumper or maybe ill run it with an eldebrock preformer carb and intake. ANY estimated horsepower ratings?

 

i went to gm casting numbers and it shows that motor as u said 80-85 truck w like 205 horse and up didnt say much more

 

thats about as far as i can get...but for some reason i cant even find an accurate hp rating...ive seen from 190 to 315...and the guy i am buying it from said 270....but that is secondary. first i need to know if it will for sure fit in place of my stock 305...anyone know that?
and also the hp rating if possible

 

All SBC engines are the same size externally. The only issue you may have in the swap is if the new engine is a one piece rear main seal or not. Your 83 should have a 2 piece rear main. The issue will be with the flywheel/flexplate. Other than that, it will be a direct swap.

There will be some numbers stamped on a block pad in front of the passenger side head. Those will give a lot more information about the engine.

 

havent bought the motor yet and its a 3 hour drive to go get it so i dont know what those numbers are and he said he cant find them. Anyways, is there any way of telling by just those numbers i listed before?

--Will it work either way? I'm also putting in a lower mileage 700r4 with it so i'll probably mate them together before i put them in the camaro. Any more suggestions? hopefully some answers? horse power estimates?

 

Casting numbers don't tell a lot. The same casting can be used over many years and on many models with the same size engine.

Nobody can give a HP estimate without knowing exactly what it is.

 

thanks. anyone taht knows anymore to help i would greatly appreciate and advice or information.

 

You have all you need to know with the block casting #. The rest is irrelevant (where it was and what was in/on it before is moot).

Next, need head casting #'s.

Without cam, intake, carb, and exhaust details, power output would be nothing more than a WAG.

 

If your looking for something with a little more power than your 305 then you should be fine with that 350. With an aftermarket Intake/Carb it may push around 250 HP but like they already said without knowing what Heads/Cam are in the motor its hard to tell you what youll have as far as horsepower.

Listen to these guys, they know what their talking about and you can learn alot from just talking to them.

 

aluminium high rise eldebrock intake, holley 650 double pumper carb, headers, catback magnaflow exhaust, as far as cam duration and that i have no idea because the motor is still about 3 hours away from me and i havent picked it up yet. this help at?

 

Not really. What Edelbrock manifold is it, specifically? They only make one intake that isn't "high rise", and we definitely wouldn't recommend that one. "High rise" could mean one of several different types.

Cam and heads information really needed.

 

Beware: alot of truck engines came with different heads, These truck heads tend to have 76cc combustion chambers, 1.72" intake valves, and the exhaust valve stems are way oversized. The 205 horse rating may mean you don't have these, but you won't know based on a few phone calls. Once you get the engine, you may find it has the crack-prone heads with the last 3 digits of the casting number being "624". This can be found by pulling the valve covers. If you have these heads, I'd pull them and get them magnafluxed to check for cracks. In either case, you may wish to take your 305 heads to a machine shop for larger valves, assuming the 350 has dished pistons. You should be able to reuse your flexplate, but it does merit checking.

 

idk about the 205 hp rating...the guy said it should put out around 270....and im hoping with the aftermarket headers, intake, carb, and distributor im getting over 300. 350 is my goal, but I dont want to have to put a cam in it. it's just running stock cam now. they are only asking 200 dollars for this motor so worse case i dont think i'm getting that bad of a deal.

 

No "929" cammed, 624 headed 350 is gonna give you 270 horses, even with an RPM AirGap and headers. But good luck.

 

8668683 is the number on the heads. Does this help any? going to pick up the motor saturday so any info would be great! thankyou

 

I don't recognize that one. In any case, if that engine has never been gone into, the original cam has duration at 0.050" lifter lift od 195 degrees intake, 202 exhaust, on a 112 degree lobe separation angle, originally at 108 degree intake centerline, before timing chain stretch over the miles, and lobe lift of 0.260" intake, 0.273" exhaust. This is called the 929 cam, and while it was first used in the '67 Camaro SS350 to make 295 HP, that was gross HP, with headers, no accessories, etc. at 10.25:1.
Assuming your heads have the 1.94" intake valves, and assuming you have around 8.5:1 compression, then to have a real 270 horses, you will need cam, like Edelbrock's Performer, intake, again like Edelbrock's Performer, and headers, no larger than 1 5/8" primaries for such a mild combo. With iron exhaust manifolds, 929 cam, stock LG4 aluminum intake manifold, and a stock LG4 exhaust system plus a good cat-back, and the L69 dual-snorkel air cleaner, then expect more like 190 HP @ 4200 rpm.

 

It might be off topic but i just bought a 92 camaro RS i know it came with a 305 tbi but the guy swap in a 350 tbi out of a 92-95 van because the water pump sits up to high can anybody tell me what is the stock hp & torque on these motors

 

I'd have to see that.

 

i didnt mean the water pump the thing that the fan hooks on to they say that a stock 350 van motor is stronger than a stock car 350 is it true?

 

It doesn't matter what they came out of, a car engine is just as strong as a truck or van engine.