If this is any concern at all then just leave it alone.
All your going to do is take away what makes the car worth what little it is.

 

Yup - UR right. I wrote " they built a L-48".

I meant that in the article they took an L-48 'type' motor and built it up
from 195 hp to 400 hp by replacing the L-48 'type' heads with different
heads ,doing a dyno , changing out the cam from the L-48 'type' cam
and doing a dyno , headers , dyno , etc. etc. etc. - all the way from 195 hp to over 400 hp.

Personally I thought it was a GREAT read for anyone with the L-48.

 

Save yourself a TON of downtime and $$$
buy one of these


and park your engine on it and leave it alone!!!

drop a Crate motor in and be done.... easy weekend project

 

copy to ,,, compguns@hotmail.com
thanks

 

Ummm...L-48 "type"....you mean a 350? 'cause otherwise there was absolutely nothing L-48ish about it

I'll drop it

 

I agree, new heads are better then anything you could do to the old heads. The article was showing that if you have the money and you want to keep your car so the NCRS Judges won't knock off points then it can be done. Myself, it is not worth the time or money so I bought new heads instead of changing the stock ones. My car is never going to be in any judging contest.

 

kkoondog@comcast.net

Thanks

 

I have a 77 auto L48 with 50 k all orig. But you could take that origanal l48 block and rebuit it with all the same parts except Block cleaned up, new rings, Heads redone. mild cam, legal headers(ca) tru dual,same intake and rebuild card and dist. Extra 125 HP easy. maybe 300 +HP total ??? Still orig. (almost)

 

??? Absolutely nothing ?? This is what they say......

The Engine

The Goodwrench 350 is unquestionably bread-and-butter basic. While all production small-blocks have employed a one-piece rear-main seal design since 1986, the Goodwrench 350 is assembled in Mexico and retains the classic two-piece pre-'86 design. This makes it an excellent choice for a basic hot rod motor for all pre-'86 cars since you don't have to purchase a new flexplate or flywheel.

Starting with a four-bolt main cap block, the 350 employs a standard cast crank and cast-aluminum flat-top pistons with ductile-iron 5/64-inch rings. Chevy claims the compression is a wheezy 8.1:1, but after the test was over, we measured everything and cam up with a slightly better 8.4:1. The good news with this low compression is that the Goodwrench engine should even run on 87-octane gas. The downside is that this low compression certainly sacrifices power. The long-block comes complete with an oil pump and pan, as well as a timing-chain cover and valve covers. The cam is a simple flat-tappet hydraulic with specs that are bone-stock tame. The 76cc chamber cast-iron heads (casting number 83417368) are fitted with 1.94/1.50-inch intake and exhaust valves and stock stamped-steel rockers.




Come on - theres godda be something there . Granted - maybe not the flat top pistons or 4 bolt mains ..... but "Absolutely nothing "?

I read this article and thought that "yup - there is hope for 'MY' wheezie L48 with its cast crank and bone stock tame cam with 76 cc chamber heads

 

Here is a test - See who can spot the aftermarket heads and other aftermarket modifications on this engine.



Nobody will know if you slap in some aftermarket heads. They are almost impossible to see and nobody will even try to with all that stock sleeper stuff in the way.

Keep the originals on a shelf "for some day" and enjoy the ride.

-Mark.