C5 z06 442cid stroker dyno
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Teching In
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C5 z06 442cid stroker dyno Found a local shop who was able to clean up previous tune. Driveability issues were fixed, and it has a nice clean acceleration to redline
Final #s were 531 rwhp, 482 rwtq
Some quick specs:
2003 c5 z06, stock ecu, running 91 gas
LS2 based stroker (442cid) LS2 Short Block Darton sleeve 4.130 bore, Balanced Rotating Assembly 4.125 Dragon Slayer Crank, Wiseco -3cc 4.130 flat top pistons, Callies Rods
ATI 10% Balancer, Johnson Slow leak down Lifters, c5r timing chain, ls3 rockers with CHE trunion upgrade
with LS3 heads/intake (heads slightly milled for increased compression) (12.2:1), cam is 241/251, 630 lift, 112lsa
Ls7 MAF, LS7 injectors, LS2 TB.
Calloway CAI, PFADT tri-y headers, 1 7/8, catless xpipe, factory ti exhaust (with bypass mod)
Monster LT1-S twin disk, stock rear end
Their dyno AFR was reading 1 point off (11.5), WOT is @ 12.45, 25 degrees of timing.
Final #s were 531 rwhp, 482 rwtq
Some quick specs:
2003 c5 z06, stock ecu, running 91 gas
LS2 based stroker (442cid) LS2 Short Block Darton sleeve 4.130 bore, Balanced Rotating Assembly 4.125 Dragon Slayer Crank, Wiseco -3cc 4.130 flat top pistons, Callies Rods
ATI 10% Balancer, Johnson Slow leak down Lifters, c5r timing chain, ls3 rockers with CHE trunion upgrade
with LS3 heads/intake (heads slightly milled for increased compression) (12.2:1), cam is 241/251, 630 lift, 112lsa
Ls7 MAF, LS7 injectors, LS2 TB.
Calloway CAI, PFADT tri-y headers, 1 7/8, catless xpipe, factory ti exhaust (with bypass mod)
Monster LT1-S twin disk, stock rear end
Their dyno AFR was reading 1 point off (11.5), WOT is @ 12.45, 25 degrees of timing.
Last edited by Efx; Aug 10, 2022 at 07:33 PM. Reason: added dyno sheet
Thread Starter
Teching In
Joined: Dec 2017
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No doubt. i would probably skip OEM LS7 castings and go aftermarket if a decent used deal comes along. But honestly for a street car, i am pretty satisfied with the power. Rear end can live longer, street tires handle the power, etc...
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From: Mississippi
Cool cruiser you have there. Long as you are happy thats all that matters.
I understand guys like LS7 over LS3 heads on a build like this but lets not forget that Cartek went 9s at 140 mph or so on a 441ci with L92 heads and a factory LS3 intake. CID with L92s ran a 9.59@ 138.9 with ported L92s with the LS3 intake...
I understand guys like LS7 over LS3 heads on a build like this but lets not forget that Cartek went 9s at 140 mph or so on a 441ci with L92 heads and a factory LS3 intake. CID with L92s ran a 9.59@ 138.9 with ported L92s with the LS3 intake...
TECH Senior Member
Joined: Jun 2016
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From: Central Cal.
Cool cruiser you have there. Long as you are happy thats all that matters.
I understand guys like LS7 over LS3 heads on a build like this but lets not forget that Cartek went 9s at 140 mph or so on a 441ci with L92 heads and a factory LS3 intake. CID with L92s ran a 9.59@ 138.9 with ported L92s with the LS3 intake...
I understand guys like LS7 over LS3 heads on a build like this but lets not forget that Cartek went 9s at 140 mph or so on a 441ci with L92 heads and a factory LS3 intake. CID with L92s ran a 9.59@ 138.9 with ported L92s with the LS3 intake...
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It looks like a great build. The most important thing it your happy.
I expected to see this was on a Mustang dyno. The numbers don’t look right to me. Something is choke it. Either that or tuning. Not even 500 ft lbs I’d expect much more from a stroker IMHO
I expected to see this was on a Mustang dyno. The numbers don’t look right to me. Something is choke it. Either that or tuning. Not even 500 ft lbs I’d expect much more from a stroker IMHO
Thread Starter
Teching In
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More importantly, the torque curve was flattened out and acceleration is smooth.
Thread Starter
Teching In
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TECH Senior Member
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that’s good. It’s prolly fine then. Do you plan on going to the track with it?
Looks good.
I've seen several Pfadt Tri-Y to ARH 2" headers back-to-back dynos over the last couple of years. Most pick up around 25-30HP and about that much torque (especially down-low and in the midrange, where the Tri-Y is supposed to be king). Something to consider at least.
I've seen several Pfadt Tri-Y to ARH 2" headers back-to-back dynos over the last couple of years. Most pick up around 25-30HP and about that much torque (especially down-low and in the midrange, where the Tri-Y is supposed to be king). Something to consider at least.
Thread Starter
Teching In
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