Remember the LT5? It was in production from 1989 to 1995 and remains (to my knowledge) the only non-OHV engine in a production corvette, why is that? Well I've heard Chevrolet thinks OHV is better than (D)OHC because of reasons such as OHV engines having a lower center of gravity and it's more compact allowing them to fit a higher displacement engine in the same engine bay. Whatever the true reason is I recon it's time they made another LT5 DOHC NA monster, perhaps one like this:
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Made with the same bore and stroke as the classic 454 big block, this thing makes a decent 103.4 HP per litre.
On the other hand if you want a recreation of the old LT5, here's an old one I made ages ago:
It's not all that accurate and that's partly because I was building it according to these specs:
http://www.thevettenet.com/corvette_specs.php?year=1993Unlike automobile-catalog which claims the LT5 redlines at 6,300 rpm thevettenet claims it redlines all the way at 7,100 rpm, meaning I couldn't lower the valve-train quality (without valve-float occurring) like I needed to do in order to make the power come earlier and the torque later. Both sites agree power comes at 5,800 (compared to my recreation's 6,200) however they disagree on where the torque comes, automobile-catalog says 5,200 while thevettenet says 4,800 (compared to my recreation's 3,900).