Which stock heads are good? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Myself · 02-23-2006, 05:36 PM

The cam went bad in my wife's truck. I'm just going to rebuild the whole engine. It' a 350. The heads on it now are 333882 casting. Are these heads decent for mild performance? Is there better castings I should start looking for? NO, I'm not going aftermarket or Vortec. Stock mild performance, that's all. Any input will be appreciated.

70rs/ss · 02-23-2006, 05:40 PM

I think the 882's are (333882.....74-80...350/400......76cc chambers) this is off of Mortec.com. These are smog heads in the fact that the cc's are high, thus lowering compression. I have a set of Double hump 041's I think and they are the best stock head out there and they have the 64cc chambers that help to increase compression (with the exception of the Vortecs) If you are deadset on using those heads, be prepared to buy a pop-up piston to help pick up compression, you are looking for 9-9.5:1 and right now you are closer to 7.5-8:1. You can run 9-9.5:1 on pump gas with no headaches. Good Luck, PM me if you have any questions.

davidh · 02-23-2006, 05:49 PM

That 882 head is worth rebuilding. I have a set redone I'm getting ready to put on my 68. You can shave as much as .20 but I had just .10 taken off mine to help raise the compression a tad. The ones I see to stay away from are the 624's. They are light weight and crack easily. I'm replacing 624's on my 68's motor. I've got several motors I've acquired and numerous friends who had 624's with water in the oil. One motor rebuilding shop told me in Tulsa that wouldn't even take 624's as cores they were that bad. The 882 was written in car craft as saying it was the best of the worst. meaning the 70's smog heads are bad and this was the best of them, the 882's had some metal to them. run them.
Flat top pistons, mild cam say a 268 comp or similar, dual plane intake, you 'll be suprised how good that econmy motor will run.

Ole Blue 68 · 02-23-2006, 06:19 PM

I heard the same thing; 882's are the best of the worst. If you do run those and want to increase your compression you could go with a thinner head gasket. Fel-Pro's got one that's like .015 inches compressed. That's what I used on my rebuild with stock heads.

oldschooloutlaw · 02-23-2006, 08:37 PM

i ported and polished a set of 882s and had flat top pistons it ran very good i would do it again

mudpuppie · 02-23-2006, 09:55 PM

oldschool , last big town befor va , are you from jenkins ?

GlennBrittain · 02-23-2006, 11:08 PM

Check GMHP Parts they were offering reproduction camel humps or double humps.

**special-K** · 02-24-2006, 08:46 AM

For mild performance any head will do.I wouldn`t go out and but anything if yours aren`t cracked or warped too much to plane.BTW,planing will raise your compression.

Huck · 02-24-2006, 10:54 AM

I've had and seen 882's crack~~. Before I would put good $$ into 882's, I would seriously consider a set of Vortec heads. Think this thing through a bit, for the price, a good set of Vortec's heads will boost your hourspower and torque better then most early design heads. If you are going to spend the $$ anyway----for a few $$ more, you get a WHOLE LOT MORE performance with reliable design, better breathing etc. My .02

junkyardjohn · 02-24-2006, 11:26 AM

Before I Spend Any Money Or Labor On Any Heads Or Blocks I Have Them Hot Tanked & Magnifluxed (checked For Cracks). If I'm Going To Bore Alot (like .100) I Get Them Sonic Tested To Find Out The Cyl. Wall Thickness.

882 Heads Are Fine For What You Want To Do. John

davidh · 02-24-2006, 05:26 PM

Quote:

Originally Posted by junkyardjohn

Before I Spend Any Money Or Labor On Any Heads Or Blocks I Have Them Hot Tanked & Magnifluxed (checked For Cracks). If I'm Going To Bore Alot (like .100) I Get Them Sonic Tested To Find Out The Cyl. Wall Thickness.

881 Heads Are Fine For What You Want To Do. John

I have a 350 from a one ton van and it has those 881 heads. The valves are smaller than 1.94. Why do you suggest them? I thought they are just another 76cc head. I thought of using them on a 283 or 307 that need some unleaded heads because of the small valve. Am I missing something on them?

davidh · 02-24-2006, 07:34 PM

[QUOTE=70rs/ss]I think the 882's are (333882.....74-80...350/400......76cc chambers) this is off of Mortec.com. These are smog heads in the fact that the cc's are high, thus lowering compression. I have a set of Double hump 041's I think and they are the best stock head out there and they have the 64cc chambers that help to increase compression (with the exception of the Vortecs)

I thought 186 heads were favorites. They are double humps with accesory holes, 1969

junkyardjohn · 02-24-2006, 11:25 PM

OOPS SORRY I MEANT 882s NOT 881s . I'M NOT REALLY RECOMENDING THEM... BUT HE ALREADY HAS EM & HE IS LOOKING FOR "MILD PEFORMANCE".

JOHN

**special-K** · 02-25-2006, 10:41 AM

I agree with jyj,Step#1:hot tank,Step#2:magnaflux with ANY used head.

jacobs · 02-25-2006, 11:10 AM

Quote:

Originally Posted by 70rs/ss

I think the 882's are (333882.....74-80...350/400......76cc chambers) this is off of Mortec.com. These are smog heads in the fact that the cc's are high, thus lowering compression. I have a set of Double hump 041's I think and they are the best stock head out there and they have the 64cc chambers that help to increase compression (with the exception of the Vortecs) If you are deadset on using those heads, be prepared to buy a pop-up piston to help pick up compression, you are looking for 9-9.5:1 and right now you are closer to 7.5-8:1. You can run 9-9.5:1 on pump gas with no headaches. Good Luck, PM me if you have any questions.

The 041's are great heads. They can even be machined out to install 2.02" intakes and 1.6" exhausts. I run them on a 350 with flat top pistons with regular gas at 2500' elevation. At 10.5:1 it rattles a little but performance is good AND fuel economy is much better. You will see an increase of about 10% better gas mileage for every point increase in compression. I've been using them for the last 6 years and put on about 70,000 miles w/o any problems.

69face · 03-26-2006, 05:24 PM

go with the 882's, but they are prone to cracking like most chevy truck heads. the 041, 441, vortec, and there are a few others good for mild performance, but the 882 can be used temporarily. i put a set of rebuilt 882s on my 83 k5, but just to sell it. they ran good for the two weeks i had them on there before i sold it. lol!

44th Miss Inf · 03-26-2006, 05:31 PM

The 882s were made in a heavy and a thin casting. GM went to the thin castings in 1976, I think.
My 74 L82 had them. I have no problem at all using the heavy castings.

Virgil

02-23-2006, 05:49 PM	#3
davidh Senior Member Join Date: Feb 2004 Location: Ponca city now kingfisher Oklahoma Posts: 1,220	Re: Which stock heads are good? That 882 head is worth rebuilding. I have a set redone I'm getting ready to put on my 68. You can shave as much as .20 but I had just .10 taken off mine to help raise the compression a tad. The ones I see to stay away from are the 624's. They are light weight and crack easily. I'm replacing 624's on my 68's motor. I've got several motors I've acquired and numerous friends who had 624's with water in the oil. One motor rebuilding shop told me in Tulsa that wouldn't even take 624's as cores they were that bad. The 882 was written in car craft as saying it was the best of the worst. meaning the 70's smog heads are bad and this was the best of them, the 882's had some metal to them. run them. Flat top pistons, mild cam say a 268 comp or similar, dual plane intake, you 'll be suprised how good that econmy motor will run.

02-23-2006, 06:19 PM	#4
Ole Blue 68 Registered User Join Date: Aug 2005 Location: Philly Posts: 1,140	Re: Which stock heads are good? I heard the same thing; 882's are the best of the worst. If you do run those and want to increase your compression you could go with a thinner head gasket. Fel-Pro's got one that's like .015 inches compressed. That's what I used on my rebuild with stock heads.

02-23-2006, 08:37 PM	#5
oldschooloutlaw Registered User Join Date: Nov 2004 Location: Last big town in KY before the VA Line Posts: 66	Re: Which stock heads are good? i ported and polished a set of 882s and had flat top pistons it ran very good i would do it again __________________ Drive fast and Take Chances - In memory of Todd Rowe #725 Fire Chief 96 Chevy K1500 67 Chevelle 70 Chevy C10 - Old Red

02-23-2006, 09:55 PM	#6
mudpuppie Registered User Join Date: Nov 2005 Location: Virginia Posts: 51	Re: Which stock heads are good? oldschool , last big town befor va , are you from jenkins ?

02-23-2006, 11:08 PM	#7
GlennBrittain Senior Member Join Date: Jun 2003 Location: Panola County Texas Posts: 401	Re: Which stock heads are good? Check GMHP Parts they were offering reproduction camel humps or double humps.

02-23-2006, 05:36 PM	#1
Myself Registered User Join Date: Oct 2005 Location: Northern Arkansas Posts: 1,144	Which stock heads are good? The cam went bad in my wife's truck. I'm just going to rebuild the whole engine. It' a 350. The heads on it now are 333882 casting. Are these heads decent for mild performance? Is there better castings I should start looking for? NO, I'm not going aftermarket or Vortec. Stock mild performance, that's all. Any input will be appreciated.

02-23-2006, 05:40 PM	#2
70rs/ss Registered User Join Date: Dec 2004 Location: Northern AZ Posts: 7,270	Re: Which stock heads are good? I think the 882's are (333882.....74-80...350/400......76cc chambers) this is off of Mortec.com. These are smog heads in the fact that the cc's are high, thus lowering compression. I have a set of Double hump 041's I think and they are the best stock head out there and they have the 64cc chambers that help to increase compression (with the exception of the Vortecs) If you are deadset on using those heads, be prepared to buy a pop-up piston to help pick up compression, you are looking for 9-9.5:1 and right now you are closer to 7.5-8:1. You can run 9-9.5:1 on pump gas with no headaches. Good Luck, PM me if you have any questions. Last edited by 70rs/ss; 02-23-2006 at 05:47 PM.

02-24-2006, 08:46 AM	#8
special-K Special Order Join Date: Nov 2004 Location: Mt Airy, MD Posts: 85,851	Re: Which stock heads are good? For mild performance any head will do.I wouldn`t go out and but anything if yours aren`t cracked or warped too much to plane.BTW,planing will raise your compression. __________________ "BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~

02-24-2006, 10:54 AM	#9
Huck Senior Member Join Date: Jun 2001 Location: Shelbyville, KY Posts: 3,261	Re: Which stock heads are good? I've had and seen 882's crack~~. Before I would put good $$ into 882's, I would seriously consider a set of Vortec heads. Think this thing through a bit, for the price, a good set of Vortec's heads will boost your hourspower and torque better then most early design heads. If you are going to spend the $$ anyway----for a few $$ more, you get a WHOLE LOT MORE performance with reliable design, better breathing etc. My .02

02-24-2006, 11:26 AM	#10
junkyardjohn Registered User Join Date: Aug 2001 Location: SOMERSET KY. Posts: 6,425	Re: Which stock heads are good? Before I Spend Any Money Or Labor On Any Heads Or Blocks I Have Them Hot Tanked & Magnifluxed (checked For Cracks). If I'm Going To Bore Alot (like .100) I Get Them Sonic Tested To Find Out The Cyl. Wall Thickness. 882 Heads Are Fine For What You Want To Do. John __________________ junkyardjohn 69 1 TON TOW TRUCK // 84 4WD CUCV BLAZER// 85 1 TON 4WD STAKE TRUCK// 86 M1031 5/4 TON 4WD CUCV// ALOT OF OLD TRUCKS FOR ONE OLD MAN TO DRIVE. THERES ROOM FOR ALL OF GODS CREATURES RIGHT NEXT TO MY MASHED POTATOES// LIFE MEMBER OF P.E.T.A (PEOPLE EATING TASTY ANIMALS) DON'T RENT U-HAUL ALWAYS TELL THE TRUTH IT WILL AMAZE PART OF THE PEOPLE & ASTONISH THE REST Last edited by junkyardjohn; 02-25-2006 at 12:41 PM.

02-24-2006, 07:34 PM	#12
davidh Senior Member Join Date: Feb 2004 Location: Ponca city now kingfisher Oklahoma Posts: 1,220	Re: Which stock heads are good? [QUOTE=70rs/ss]I think the 882's are (333882.....74-80...350/400......76cc chambers) this is off of Mortec.com. These are smog heads in the fact that the cc's are high, thus lowering compression. I have a set of Double hump 041's I think and they are the best stock head out there and they have the 64cc chambers that help to increase compression (with the exception of the Vortecs) I thought 186 heads were favorites. They are double humps with accesory holes, 1969

02-24-2006, 11:25 PM	#13
junkyardjohn Registered User Join Date: Aug 2001 Location: SOMERSET KY. Posts: 6,425	Re: Which stock heads are good? OOPS SORRY I MEANT 882s NOT 881s . I'M NOT REALLY RECOMENDING THEM... BUT HE ALREADY HAS EM & HE IS LOOKING FOR "MILD PEFORMANCE". JOHN __________________ junkyardjohn 69 1 TON TOW TRUCK // 84 4WD CUCV BLAZER// 85 1 TON 4WD STAKE TRUCK// 86 M1031 5/4 TON 4WD CUCV// ALOT OF OLD TRUCKS FOR ONE OLD MAN TO DRIVE. THERES ROOM FOR ALL OF GODS CREATURES RIGHT NEXT TO MY MASHED POTATOES// LIFE MEMBER OF P.E.T.A (PEOPLE EATING TASTY ANIMALS) DON'T RENT U-HAUL ALWAYS TELL THE TRUTH IT WILL AMAZE PART OF THE PEOPLE & ASTONISH THE REST

02-25-2006, 10:41 AM	#14
special-K Special Order Join Date: Nov 2004 Location: Mt Airy, MD Posts: 85,851	Re: Which stock heads are good? I agree with jyj,Step#1:hot tank,Step#2:magnaflux with ANY used head. __________________ "BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~

03-26-2006, 05:24 PM	#16
69face Registered User Join Date: Feb 2006 Location: northridge Posts: 534	Re: Which stock heads are good? go with the 882's, but they are prone to cracking like most chevy truck heads. the 041, 441, vortec, and there are a few others good for mild performance, but the 882 can be used temporarily. i put a set of rebuilt 882s on my 83 k5, but just to sell it. they ran good for the two weeks i had them on there before i sold it. lol!

03-26-2006, 05:31 PM	#17
44th Miss Inf Registered User Join Date: Sep 2002 Location: Liberty, Mississippi Posts: 672	Re: Which stock heads are good? The 882s were made in a heavy and a thin casting. GM went to the thin castings in 1976, I think. My 74 L82 had them. I have no problem at all using the heavy castings. Virgil



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