I WAS JUST WODERING IF IT WOULD WORTH MY WHILE TO PURCHASE A SET OF LT1 HEADS AND PORT THEM OUT FOR MY L69 CARBED 305? IF ANYONE HAS INFO ON THIS TOPIC I WOULD SURE APPECIATE SOME HELP. THANKS RIKDOG P.S. MY Z IS A 1984 WITH T-5 IN ALMOST MINT COND.

 

They won't fit. The LT1 heads are a reverse coolant flow.

 

Hot Rod or Car Craft did an article on how to retro fit LT1 heads on a Gen 1 SBC. I had the page bookmarked, but I dont have the other computer anymore If you look around enough you might find it.

 

search thirdgen.org there is a link to that article.

 

No, LT1 heads are totally different and wont bolt up to our blocks without some major modification. And the price of that makes them not worthwhile. The best heads for 305's would be the L98 aluminums or the 305 S/R Torquers.


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1991 Camaro Z28
350 L98 w/ T56 (originally 305 LB9 w/ T5)
318 RWHP, 419 RWTQ
12.803 @ 108.50 MPH (1.932 60')
Member: SoCal F-Bodies
ThirdGen 4-Life!

 

The heads will bolt up to your block. The intake bolts will be different and the coolant passage.

 

Or just save your money and buy a 350 block and build it...

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Brett

'91 Z28 (Black)
TOTALED
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Brett's House
MN F-body

 

Ok if you want to get technical, yes they will bolt on to the block, but your intake wont bolt onto them, and the intake passages wont line up. Also the coolant passages for the water wont line up.

 

you can buy manifolds for the lt1 heads through chevrolet