Ok guys i have a few questions about 882 heads... First my monte has a pair of 882 casting heads that where stage one ported got a 3 angle valve job and had the valves replaced to 2.02,1.60. Ive herd lots of bashing on 882 heads i dont know why. they seem like a good casting to me and id like to get them stage two ported but im worryed about everyone bashing on these heads! Ill explain my setup in deail
1974 Block Bored .30 over
Stock bottom with forged pistons with a slight dish
Highvalume oil pump with stock pan and pickup
No idea on the specs of the bumpstyick but its slightly lopey
MY 882 heads
Edelbrock Perfomer eps mainfold with a one inch spacer and holley 650 carb
Do you think stage two ported heads are enuf to suply this engine with what it needs? i know it runs a low to mid 13 and has gobs of torque! am i better off buying a btter casting or just porting out these heads? please tell me about the 882 head anything would be helpful

 

882s are among the worse heads gm ever put on a SBC. large chamber and low flow just about any head you picked would be better or at least not worse, but again it depends on your application and what you want out of it. you've got way more time and money in them than they'd ever be worth in terms of preformace return or resale value.

 

If you want to understand why people bash them, just replace them with something else. Just about anything else will do, as long as it has the same size valves, and equivalent port work (money spent). You won't have to ask this question any more, it will answer itself for you.

 

Dished pistons, lumpy cam, and 76cc 882 heads? You need good compression for a lumpy cam, and dished pistons and 76cc heads arent gonna go it. Unless you change cams and out a turbo or supercharger on it.

 

That motor looks real familiar..... looks EXACTLY like all of the failures we all used to see all through the 80s, where people would take a stock 79 Z28 or some Monte Carlo or 74 Nova or something else with the identical same parts you've got, and jam a Comp HE268 or a 151 or some one of those generic 230°/480" cams you can get from everywhere in it, and then wonder why they couldn't break into the 15s.

I'd like to see a time slip, because I don't believe that motor will take you into the low 13s.

in the absence of a time slip that says low 13s, the car doesn't do low 13s, and shouldn't be claimed as such.

I'll consider a chassis dyno run showing 300 RWHP or more as an acceptable substitute.

 

i agree with the above. But also, are they early or late castings? IIRC, there were 2 forms. The earlier casting was thicker and ok to port. The later castings were the lightweight castings and had thin walls between the center 2 exhaust ports especially.

I'm with RB on the 13's on those heads.

 

If you got a set of dished pistons in there, you got the perfect base for using 305 heads! A set like 416 or 081 would be a MASSIVE improvement over your 882s. Right now, you have around 8:1 compression. Thats really not a good thing (performance wise) when you have a 'lopey' cam that bleeds off the little cylinder pressure you had to begin with.

A set of 416s or 081s would probably kick up your CR to about 9.5:1 or so, and plus, they breathe MUCH better than any old smogger 350 head did, or at least they will when you get some 1.94/1.60 valves in there and clean up the ports a little.

 

From what ive just red these heads suck... if oyu read in the street racing section i did race a 2002 WS6 and i did win... please do not flame me by saying he wasnt raceing and yes it was auto. Ill tell you know that i have no money a 800 dollar pair of heads is beond outa the question! arnt these double humpers i thought thye where good factory heads! if i get them ported and milled down could i see any gain or should i go to a junk yard spend money on heads and more on valves and headwork! im confused really! im now a worry wart i know the car will fly the last own had a slew of time slips the most resent was a 14.4 at 97 mph andi know 97 is good for 13.8's.. mind you this is before the heads, built tranny, 2800 stall, rearupgrade form 3.42 non posi to 3.73 posi , and sticky tires im quite shure this car is good for 13.5 and lower passes but i hate benchraceing! im gona chekc out a dyno tomarrow and i plan on racing it at the track really soon

 

Btw could you advise me on cheap replacements or good castings! i knew i should took the l69 heads when they where offered

 

I have the same set of heads and now I am stuck with them because I don't have the money for anything else, I have spent $12,000.00 on my T/A and my wife has cut me off on funds. My 350 came out of a 74 Nova. I know you don't want to hear it but, don't spend any more money on those heads. You said you don't have the money for an $800.00 set of heads. Well it cost me $750.00 to have mine re-done with 2.02/1.60's, dual valve springs, studs and guide plates. I think it was money well waisted.

I should have used a different engine. But the engine came out of my best friend's first car. So we figured it would be cool to use it in my first performance build-up. :lala:

They are not double hump heads.

I have pistons with a .125 dome just to get 9.4 to 1.

The money spent on these heads would be better spent on a set of vortecs. You can get a set ready to run from Jegs for around $600.00.

 

They are not double-humps. They are mid 70s low-power smogger 76cc. Others of similar bad characteristics include the 624 and 993. Double-humps are 60s/early 70s pre-smog 64cc hi-perf castings; they came on the better 327s and 302s and 350s from 63 to 70. And unlike 882s, double-humps have {drum roll please} the double hump marking, for easy identification; as contrasted with 882s, which have IIRC a single asymmetrical triangle.

For a low compression motor like that, a good choice would be a set of 305 heads; do a port job on them, and have 1.94" intake valves installed, and relieve the chambers (lay them back) a little bit, to unshroud the valves. That will instantly take you compression from its current 8.low, to somewhere in the mid 9s; and get your power up from its current 245 or so at a reasonable guess based on as many of that identical combo you've got as I've seen over the decades, to probably 290 or thereabouts. Castings to look for include 416, 601, and 081; avoid the 434.

Double-humps WITH THE BOLT HOLES would be good too, better than what you've got, but probably not worth what you'd have to pay to get them. Another good casting to start with is the TPI 350 one; those are fairly common, and not too expensive. Casting number on those is 083.

Ones to absolutely avoid no matter what, are any of the TBI heads; either from a 350 or a 305. Casting numbers of those are 187 and 193.

Vortecs aren't a bad idea; although, you MUST buy an intake to go with them, as their intake port is in a different place. That's what gives them their flow, is the raised intake port; older intakes sometimes won't even cover up the ports on them, let alone match up. Casting #s are 906 & 062. They come on 96-99 trucks exclusively, or are available over the counter.

Here's what double-humps look like. Note the double hump on the casting mark, which is considerably different from the markings on smoggers. This set is the 69-70 ones with the accessory bolt holes, which are relatively uncommon; seems like everybody and his brother has a set of the older 461s and the like, without the bolt holes. You don't want any of those either, even though they're REAL CHEAP; the reason they're cheap, is because nobody can use them, they don't fit any cars made in the last 30 years.

 

Ive put no money into these heads and i dont plan on it either thanks guys but i really am on a tight budget! my main problem is that i have no money and i can really afford new heads i found that these pistons arnt dished they are just flattops that the guy called "low comp pistons"... Im just so worryed now! i know it doenst have a univernal cam the guy i bought its from had his buddy rebuild it and the guy works for the city repairing fire trucks and **** and he said its a hyd flat tappet cam that has some big lobes. I have an lg4 in the driveway with 812 castings are they anygood? could i get my 2.02's fited on them or would i have to spend more money!the problem is i dont wana spend money on heads that will flow like ****! OMFG IM SUCH AN IDIOT! i forgot my heads up north **** man how dumb am i! thanks for the help guys i forgot i had a pair of fuelies up north! how much do you think it would cost to get them to rebuilt and port these heads?

 

If you have no money into them that it is not going to hurt to just run them as is untill you can afford somthing else.

My 882's have not been ported or polished but it cost like $750 to have the new larger valves installed with new guides, pockets machined and new dual springs installed, studs and guide plates installed.

New vortecs (or other type) woulda been cheaper. So think about cost before you rebuild any set of heads.

 

Stop Beating yerself up.For some reason a lot of folks think the 882 is a good head.For what it would cost to have set of Double Hump heads done,this includes buying them,then having all the machine work done,unless you know someone that owns a machine shop,you should really just save up for new heads.The great thing about buying a brand new set of heads is you know what you are getting,they have never been run at 260 degrees,they will have good seals and good valve seat and they won't be warped.I have a suggestion,save up for a pair of World Products S/R Torqers,you can get em with a 2.02 valve and I think it's a 68cc combustion chamber.At $800 they are an outstanding way to go.I know it's heartbreakin but you will pick up so much power you will wonder why GM couldn't do it.I actually have a set of these on my Dirt Track Motor and everyone thinks I have the big runner DARTS,they just work and they flow a hair better than the old Double Humps,but not quite as good as Vortecs.

 

Just to let you know S/r Torquers are fuelie castings... they jsut added on to the head you know people buy them for the same reson you listed "knowing they havent been to 260"

 

What do World Products heads have to do with the old Rochester mechanical fuel injection of the late 50s and early 60s?

 

And YEs they are essentially fuelie castings.With slight bowl improvements and better valve seat angles,which is why they flow a tick better.Also have more meat in em so yer not worried about thin castings.Generally they are worth 30-40 HP over original double Humps.

 

I don't think so...

"Fuelie" heads were the original 64cc casting that came on 327s with the Rochester mechanical fuel injection back in 63. They were the 461 casting I referred to earlier, that pre-dated the introduction of bolt holes.

S/R Torquers are an aftermarket head, made by a completely different company.

They have nothing whatsoever to do with each other; except that they are both for SBC, and both will run better than 882s.

That's a function of the guy running the valve grinding machine, not the casting mfr. You can put a 5-angle or a radius job on GM heads, and you can also do a chain-saw single cut on a S/R Torquer.

 

FYI a 02 WS6 is an easy mid-low 13 sec car with a decent driver and a good tune. sure it wasnt a v6?

 

Look for a set of #416 heads... they are litterally EVERYWHERE!! They came on 99% of all the 305s that were built in the '80s. Thats ALOT of 416 heads.

They are also "just 305 heads" so they are dirt cheap anywhere you get them too.