More Vortec Heads questions
Thread Starter
Pro
Joined: Mar 2015
Posts: 681
Likes: 31
From: Nebraska
More Vortec Heads questions
Still havn't done the head swap. I have learned that there are some aftermarket vortecs that are thicker and resist cracking. Who makes these?
Also how big can I go with the cam on the L48 with the Vortecs?
Also how big can I go with the cam on the L48 with the Vortecs?
Safety Car
Joined: Apr 2005
Posts: 3,624
Likes: 431
From: Dale City VA
Couple companies mfgr aftermarket Vortec based castings.
Engine Quest (EQ)
Dart
RHS/Pro Topline
World Products
Pro Maxx
Even with 64cc chambers the L48 is going to have fairly low compression so you shouldn't try to go overboard on the camshaft duration. Something in the 270@.006 and high 2-teens/low 220@.050 range would be good but everything depends on the whole combination you have planned for the engine and driveline.
Will
Engine Quest (EQ)
Dart
RHS/Pro Topline
World Products
Pro Maxx
Even with 64cc chambers the L48 is going to have fairly low compression so you shouldn't try to go overboard on the camshaft duration. Something in the 270@.006 and high 2-teens/low 220@.050 range would be good but everything depends on the whole combination you have planned for the engine and driveline.
Will
Safety Car
Joined: Apr 2005
Posts: 3,624
Likes: 431
From: Dale City VA
Yes to my knowledge they are all improved castings. Thicker and some have improved runners.
I have a lot of experience with the EQ heads as they are the best cyl head option we are allowed to run in a limited oval track class that we build engines for.
I also forgot to list the GMPP Bowtie Vortec cyl heads. There are 2 different ones a small port and a big port.
Will
I have a lot of experience with the EQ heads as they are the best cyl head option we are allowed to run in a limited oval track class that we build engines for.
I also forgot to list the GMPP Bowtie Vortec cyl heads. There are 2 different ones a small port and a big port.
Will
Melting Slicks
Joined: Aug 2003
Posts: 3,416
Likes: 291
From: dayton oh
Remember when switching over to Vortecs you also need different rocker arms too (self aligning) so if you're keeping the stock L48 cam, might as well go 1.6 for more lift. Any aftermarket vortec head can handle it.
and valve covers too if they aren't drilled with both perimeter and center holes.
and valve covers too if they aren't drilled with both perimeter and center holes.
Last edited by Fast81; Jun 9, 2016 at 10:10 PM.
