we have a junk 82 z28 crossfire we bought for parts a couple of years ago, it has a GM Goodwrench 305 with the rods through the block, but i was thinking about tearing the heads and the intake off, ill probably ebay or let the intake set in my closet for a later, less performance project, (i think they are neat) but i was wondering if the heads would be an improvement over the 187 L03 heads i have on my bird now. I would have around $100 in them going to a 1.94/1.6 valve combination I have no idea on the head on casting numbers, hopefully ill find out later, but i was looking for insights

 

damn, i left my magic hat at home. Without casting numbers you are just guessing. I am goin to say yes, they will without doubt have 550hp potential in stock form.

 

ok smart*ss if you really have no idea don't answer, you already got like 3000 posts, go spend some time doing something else, i just figured someone may be familar with these engines and know the casting numbers off the top of their head and if they were of any quality

 

Welcome to thirdgen.org.

 

The '82 Crossfire engines would have had 416 casting # heads, but if its a goodmark engine, i'm not sure what they would have used. I would guess it's the same, and therefore just slightly better than 187 TBI heads, IMHO. Barely worth the head gaskets to swap over, unless you fully port them up.

 

How about you spend some time off your *ss and go look for yourself. Who knows if it was swapped at a time before you got it. It takes less than 10 minutes to get what you need then look up the numbers for yourself. Iron heads you cannot get away with a lot of compression, since its going back on a 305 you will not have to worry about it, however you need to make sure that the heads themselves did not get damaged by the rods/pistons, otherwise your wasting time.

 

well i work about 70 hours a week, i don't get online too much, and yes the motor was swapped before i got it, and it is kinda a bear to yank the valve covers, it appears the manifold's upper blocks easy access to them, and its about 2 miles from my house, so i can't use any power tools, so it might take more than about 10 minutes

 

I believe you missed the point. Until you get off your rear and look for a casting number it doesnt really matter. We dont have any type of magic wand to deduce what heads are on an engine. The engine could have had the heads swapped since it was built, you just cant tell. BTW thanks for the smart*ss, its a lot better than the alternative of being a dumb........well you get the point

 

thanks for some good relevant information sonix, i really do appreciate it, kinda hard to come by at times

 

No diss to you Sonix by any means and this is not meant towards you, but if the motor was swapped, how is it relevant information when you know it is not the original motor?

 

they are 416's go figure, i also got a set of 14102191's from a 350 tbi are they any good?

 

No the TBI heads are no good. Throw them away, or turn them in as cores.

 

im going to guess the casting numbers are probably 14044016? I have those heads and they came off a 80-85 305 HO, which is what the cross-fire should have had. BUT if the engine was changed then cant help.

-my two cents

 

If you mind me saying I would save my pennies and order a pair of heads from eldlebrock, and an intake. This way if you decide to strip the intake and heads off you have a better chance of picking up a better set. The crossfire injection was a bad idea for the camaros back then. Thats way GM stop making production. At least Eldlebrock would give you better gas mileage, as well as performance. But that's my opinon.

 

haha, whaddya know, I was right. Even though it was a total shot in the dark.
There aren't many other choices that GM would have used on an aftermarket engine to replace a 305, there was a good chance it had the stock heads anyway.

haha, Jon, your 3 points in your sig? #3 kinda imposes on #2 eh?

Your 416 head right now are your best bet. Port them up and you're good to go. Use the 1.94/1.6" valves that you were thinking of putting into the 187 heads. You might be able to steal the 1.94" valves out of the 193 TBI 350 heads you've got. I stole the 1.94" valves out of some old 993 heads, saved me $60 or so.

 

powerhouse has a set of 1.94" for 24.95, im curious to see as how their quality is on cheap stuff, btw ill get my sig corrected

im a dumb*ss sometimes