Can a LT1 from a 92 corvette handle 450 hp?
09-29-2013, 12:46 PM
#22
Le Mans Master
Naturally aspirated, 11.2:1 383 LT4
Cam is a 242/252 duration .55x/.56x lift w 1.6 rockers 110 LSA
Heads and intake were HEAVILY ported ($3000+ in machine work and parts, I supplied the heads and intake) I lost the flow sheets, but plan to pull the heads next winter and I'll get them flowed again. If I remember they peaked in the 320 CFM range.
Yes, 1 3/4" TPIS long tubes, no cats, Corsa exhaust
Main tune was done by a local shop here, and touched up a bit by a friend of mine.
All forged bottom-end.
Red-line is limited to 7000 because of the stock computer, as you can see it was still making power at 6800 where the dyno operator stopped, can;t remember why. Probably would have topped out around 470 or so if it went all the way.
I have the LTCC ignition coil kit installed and an running BKR7E-11 (cold) plugs. This engine really makes a lot of heat.
There are a lot of pics and info in this thread, I made it right after that dyno run was completed alllllll the way back in 2005. There are some pics of the heads on page 2 or 3 I think.
http://forums.corvetteforum.com/c4-t...o-466rwhp.html
Cam is a 242/252 duration .55x/.56x lift w 1.6 rockers 110 LSA
Heads and intake were HEAVILY ported ($3000+ in machine work and parts, I supplied the heads and intake) I lost the flow sheets, but plan to pull the heads next winter and I'll get them flowed again. If I remember they peaked in the 320 CFM range.
Yes, 1 3/4" TPIS long tubes, no cats, Corsa exhaust
Main tune was done by a local shop here, and touched up a bit by a friend of mine.
All forged bottom-end.
Red-line is limited to 7000 because of the stock computer, as you can see it was still making power at 6800 where the dyno operator stopped, can;t remember why. Probably would have topped out around 470 or so if it went all the way.
I have the LTCC ignition coil kit installed and an running BKR7E-11 (cold) plugs. This engine really makes a lot of heat.
There are a lot of pics and info in this thread, I made it right after that dyno run was completed alllllll the way back in 2005. There are some pics of the heads on page 2 or 3 I think.
http://forums.corvetteforum.com/c4-t...o-466rwhp.html
Thanks for the link, I'll read over it. No signs of lifter pump up from going that high on a hydraulic roller? I guess you wouldn't be buzzing it up that high all the time but must be nice to say you could turn that kind of rpm if you wanted to.
