Okay, So today im at the junkyard I go to a Pick and pull yard, lots of good third gens there.

I see a 1989 camaro i roc Z so i check it out, the center console at the SPID label still, and had code L98(350) and no t-tops

Im gonna take the heads, 77$ each

what are they worth for real? im going to use them after getting them redone.

 

that doesnt seem a bad price. they aint worth much since you'll need new springs and seals/etc and they arent the best flowing iron heads out there. but yeah for that i'd go for it. with a good cleanup on the ports and a tad bit of bowl work, they will support 350-375hp.

 

Oh, crap, your serious they are Iron heads? I thought L98's had aluminum

 

F-body L98s had cast iron heads, Corvette L98s used aluminum heads. The iron heads (in stock form) actually do outperfom the aluminum heads by a bit. The only real advantage of the aluminum L98s over the iron ones is the smaller chambers that will bump up compression by a half point or so, which just balances out for the heat loss of an aluminum head - its almost a moot point that way. As far as flow goes, the iron heads beat out the aluminum ones by a bit.

 

i have seen the aluminum heads flowing a tad more on the intake side, but alot more on the exhaust side which really helps. Plus they have screw in rocker studs i do believe which is a must for higher lift cams, and heavier spring pressures

best deal i've seen for aluminum heads was about 325 bucks for the pair

 

The Iron L98 heads were probably the best SBC heads since the double humps, and before Vortecs. So between 1972-1996 those were good heads (not a lot of competition in there, but anyway...)
Should be better than smoggers, if that's what you have now. They just LOVE to be ported too.

 

Sounds like there still good heads anyways, I got smoggers on now, was going to get 416's worked over but this might end up being better.

Guess ill try to work with really rusty exhaust bolts and torx bits to get these heads.

There casting isnt weak like smogs heads are they?, like the L98 has a less chance of being cracked.

the chamber size on these 64cc right? if so then my compression is were I want it, in the 10:1.

 

Yes, probably aren't cracked.
They'd only be 10:1 if you've decked the block and are using flat top pistons, like myself, but yes, they are 64cc's.

 

My block isnt decked, but I do have flattops, my block was cleaned up on top, my pistons are .014 in the hole and with a shim head gasket ill get 10:1

Lol, sonix I read your sig and yours is similar to mine in we used the same piston, and carb to.

 

yeah that will be close to 10 to 1. .014 and a .015 shim tho will have a very tight quench. optimal is .035-.045. I think you can run it still tho.

 

what if I mill .010 off the heads, and use a .043 compressed thickness gasket? that would still give me 10:1

 

it could but then the quench would be alittle high

i'd just run the .029 quench or go with a .028inch gasket and you will be fine.

 

I cant find any .028 gasket, closest was .03 something. Guess Ill run what I got.

unless you know any .028 gaskets? was looking on jegs

 

summit has a set by mr gasket

mrg 1134 i think the number is

 

the "083" L-98 heads are the best (other than vortecs and aluminum L98)
late model junk yard head you'll find. In stock form the port flow is modest by they flow very good when fully ported with larger 2.02x 1.60' valves.
You can make a very good performance head out of them if you don't mind investing the time and effort.

 

I agree. I'm running 083's with a full port job and good valves/springs. Check my sig. There's a couple of really good articles somewhere here on porting them if you do a search and are up to the challenge I think you'll be pleased.