Dome top pistons L48
Thread Starter
2nd Gear
Joined: Jun 2019
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Dome top pistons L48
Hey all,
For years my father had the 350 4 bolt sitting in his garage. Now it has found its way to mine. 😂
Anyway, after researching the casting #'s on the block, heads and intake. They all match up to be an L48 with a block cast date of Aug, 14 1973.
I've been reading about the low compression with the 993 heads. And the mods some people have done. So I was thinking of polishing the runners and chambers. And maybe increasing the valve size with dome pistons. Not trying to go crazy. I know I'm limited on the runner flow. But what do you think?
Thanks for any input!
For years my father had the 350 4 bolt sitting in his garage. Now it has found its way to mine. 😂
Anyway, after researching the casting #'s on the block, heads and intake. They all match up to be an L48 with a block cast date of Aug, 14 1973.
I've been reading about the low compression with the 993 heads. And the mods some people have done. So I was thinking of polishing the runners and chambers. And maybe increasing the valve size with dome pistons. Not trying to go crazy. I know I'm limited on the runner flow. But what do you think?
Thanks for any input!
Last edited by Jetmech75; Jun 13, 2019 at 09:41 AM.
Team Owner
Joined: Oct 2004
Posts: 81,241
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From: altered state
St. Jude Donor '05
Any particular reason why you are stuck on old iron heads? What cam, compression are you thinking of? Build plans/budget?
Fwiw there are some nice aftermarket irons...and tfs double hump aluminums
Fwiw there are some nice aftermarket irons...and tfs double hump aluminums
