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How well did u clean the block and heads before reinstalling? The block deck and heads need to be squeaky clean - enough so the machine marks show and no gasket material at all remains. Usually takes a scotch brite like wheel on a drill - dont remove the machine marks though with any abrasive.
BTW with iron heads u can use a FelPro steel shim gasket 1094 (well its coated) with 0.015" compressed height (thats what i used). This will give a little compression increase and makes some piston to head quench which is a very good thing for performance and economy.
But a vlv job is always a good idea once the heads are off to make it worth while. If the heads have never been apart before the fit up should be ok. But why does your profile then say u have Pro Tork heads and Thumpr cam???
Please explain.
This is the 1978 I just got from my son for Xmas last year. It is a different ride altogether. I can see how that would be confusing. The other is a 1975. It is a crate motor and I had them put a Thumpr cam in it. I no longer have that car, but haven't been able to figure out how to change the avatar and profile. I figured out how to change it all. Should all be current now.
I would do a coolant system pressure check, I would have done that first.
I agree with red completely. The stock 882's are notorious for cracking and when you replaced the head gasket if they are cracked you could have made it worse.
From: Las Vegas - Just stop perpetuating myths please.
Ok your profile is updated. One more item though since you've opened up the engine is which 350" engine - L82 or L48?
If u plan to get the vlvs reground then for pretty much the same price u could get a 3 angle vlv job to help your heads breathe a little better - every little power gain adds up.
JFYI D. Vizard has a good book on just the disassemble and overhaul of the sbc. HPBOOKS 1029: How to rebuild your Small-Block Chevy. It may help u correct an overlooked item.
Ok your profile is updated. One more item though since you've opened up the engine is which 350" engine - L82 or L48?
If u plan to get the vlvs reground then for pretty much the same price u could get a 3 angle vlv job to help your heads breathe a little better - every little power gain adds up.
JFYI D. Vizard has a good book on just the disassemble and overhaul of the sbc. HPBOOKS 1029: How to rebuild your Small-Block Chevy. It may help u correct an overlooked item.
Good luck.
Thanks. I will look for the books. I have an assembly manual...but I must admit...I don't read much. Typical guy. I am really considering a set of aluminum heads. It's the L-82 motor. Still not a whole lot of power in that year. Then again...I may just get a crate again. I am thinking a 427 small block. Then again...the 427 big block would be great!
Whenever you have heads off, you should check for flatness and have them surfaced if necessary and also pressure checked for cracks. Having the 882 heads off is a good reason to replace them with some good design heads.
Whenever you have heads off, you should check for flatness and have them surfaced if necessary and also pressure checked for cracks. Having the 882 heads off is a good reason to replace them with some good design heads.
From: Las Vegas - Just stop perpetuating myths please.
L82 has a good cam as is. All it needs are good heads with good compression - u already have headers and good intake. My vote goes for vortec heads (will need a vortec intake though). Vortec heads with a good performance tune will make good power and save u much money over than any good aluminum head. Get some vortecs with good vlv springs and a 3 angle vlv job too. Screw in studs would be nice also. I like scroggins dickey: https://sdparts.com/details/scoggin-...nter/sd8060ra2.
But the stock vortec springs will work with your cam so u could bolt on Jegs $310 vortecs with vortec intake and make goobs of power. Still use the FelPro shim 0.015" gasket BTW. So $620 buck for heads plus an intake with a good tune will get u most band for the buck i can think of. The L82 is a great short block 350 - just set it up right.
But i have to say u need to calculate your compression as the L82 forged piston yielded higher compression than the L48. U can measure piston volume with the block in the car - look up REELAV8R threads as he did it for the L48 (now everyone is very happy to have the information). And if needed u could intake World Products Torquer IIs with 67cc chambers like mine - but they really a pocket porting to wake them up. Another great hp/dollar head.
Well Chevy High Performance did a whole series on a goodwrench crate 350" motor (L48). They make 383hp and 401ft-lbs - but with maybe a little hotter cam. The series is now an HP book - 1400 and less than 10 bucks on Amazon. I'll sure youll enjoy it.
L82 has a good cam as is. All it needs are good heads with good compression - u already have headers and good intake. My vote goes for vortec heads (will need a vortec intake though). Vortec heads with a good performance tune will make good power and save u much money over than any good aluminum head. Get some vortecs with good vlv springs and a 3 angle vlv job too. Screw in studs would be nice also. I like scroggins dickey: https://sdparts.com/details/scoggin-...nter/sd8060ra2.
But the stock vortec springs will work with your cam so u could bolt on Jegs $310 vortecs with vortec intake and make goobs of power. Still use the FelPro shim 0.015" gasket BTW. So $620 buck for heads plus an intake with a good tune will get u most band for the buck i can think of. The L82 is a great short block 350 - just set it up right.
But i have to say u need to calculate your compression as the L82 forged piston yielded higher compression than the L48. U can measure piston volume with the block in the car - look up REELAV8R threads as he did it for the L48 (now everyone is very happy to have the information). And if needed u could intake World Products Torquer IIs with 67cc chambers like mine - but they really a pocket porting to wake them up. Another great hp/dollar head.
Well Chevy High Performance did a whole series on a goodwrench crate 350" motor (L48). They make 383hp and 401ft-lbs - but with maybe a little hotter cam. The series is now an HP book - 1400 and less than 10 bucks on Amazon. I'll sure youll enjoy it.
Good luck,
cardo0
A guy has a 390 hp 427 out of a 1969 for $3K obo in San Antonio I may go look at. Sure would like to make it a BBC. A tweak here and there and maybe get some more power out of it. But...am definitely getting the books and really should go back over all those Car Craft and Chevy Performance mags I have in the garage.
Well Chevy High Performance did a whole series on a goodwrench crate 350" motor (L48). They make 383hp and 401ft-lbs - but with maybe a little hotter cam. The series is now an HP book
If you buy the book, I would hate for you to miss out on the killer cover.
How well did u clean the block and heads before reinstalling? The block deck and heads need to be squeaky clean - enough so the machine marks show and no gasket material at all remains. Usually takes a scotch brite like wheel on a drill - dont remove the machine marks though with any abrasive.
BTW with iron heads u can use a FelPro steel shim gasket 1094 (well its coated) with 0.015" compressed height (thats what i used). This will give a little compression increase and makes some piston to head quench which is a very good thing for performance and economy.
But a vlv job is always a good idea once the heads are off to make it worth while. If the heads have never been apart before the fit up should be ok. But why does your profile then say u have Pro Tork heads and Thumpr cam???
Please explain.
I also used the 1094 felpro steel shim gaskets for a better quench, but I coated them with copper spray gasket since they were uncoated....
only about an hour of runtime so far but so far so good
Last edited by augiedoggy; Jul 16, 2014 at 11:04 AM.
I hope you get it straightened out. You don't mention which gaskets you used but if you haven't used the Print-o-seal Performance ones from Felpro in the past, you may check them out.
There is a pretty big difference on the water passages for the center cylinders. Photo shows stock replacement on bottom and performance ones on top. To me this is a must have considering there are two exhaust ports right there building heat. Check out the difference:
I just had a set of heads pressure checked and some machine work done at Wolff Machine Shop. David is an honest guy who does good work. There were always several V8's around the shop and boxes of performance parts for builds.
10208 N Fm 620
Austin, TX 78726
(512) 219-5555
I took my heads to Wolff Machine shop. Met David. You were right he is a really nice guy. He went over the heads and told me they were basically junk heads and always had cracks. He said $400 to inspect and clean them up. I am meeting a guy to buy some World Torker Heads for $300. He is going aluminum and the Torkers are cast iron and new. I figure that's about a good a deal as I can get for that price.
I took my heads to Wolff Machine shop. Met David. You were right he is a really nice guy. He went over the heads and told me they were basically junk heads and always had cracks. He said $400 to inspect and clean them up. I am meeting a guy to buy some World Torker Heads for $300. He is going aluminum and the Torkers are cast iron and new. I figure that's about a good a deal as I can get for that price.
Stay tuned.
Don't know what your budget is but there's better heads out than the world torqers.
Don't know what your budget is but there's better heads out than the world torqers.
Yes...after I started doing research on them I am rethinking the whole thing. But for the price. They are 2.02/1.60 valves. I don't want to get too deep since I don't even know if I want to keep the motor. Wollf said it probably had a cylinder missing from the looks of the heads. They are stamped 882 on them. I have a Melling cam sitting here collecting dust and a Comp cam. The heads I am looking at have .550 max lift. I just wonder if the springs are too stiff for the Melling cam. It is 422/444 lift. I don't think they are.
The other is Xtreme Energy XE284H Hydraulic Flat Tappet Camshaft Only
Lift: .507''/.510''
Duration: 284°/296°
RPM Range: 2300-6500
They are supposed to make about the same power as the Vortecs, and since you won't need to get a new intake manifold and valve covers, they are about the same price. They have large diameter valve springs, so your stock rocker arms won't work, but you can use these:
They are supposed to make about the same power as the Vortecs, and since you won't need to get a new intake manifold and valve covers, they are about the same price. They have large diameter valve springs, so your stock rocker arms won't work, but you can use these:
That's a good price for aluminum heads and the rockers. Hmmm...decisions...Do you how much HP over stock heads they make? It doesn't state that on their website.
That's a good price for aluminum heads and the rockers. Hmmm...decisions...Do you how much HP over stock heads they make? It doesn't state that on their website.
Thanks for the info
according to the flow numbwers they should be capable of making over 400hp without any issue if the rest of the engine is up to par.
That's a good price for aluminum heads and the rockers. Hmmm...decisions...Do you how much HP over stock heads they make? It doesn't state that on their website.
Thanks for the info
I haven't scraped up the scratch to buy a set yet, so I don't have any actual experience with them, but in a Car Craft test, they performed about the same as a set of Vortecs:
