stroked 427 not making the power it should HELP
08-23-2007, 06:32 PM
#1
stroked 427 not making the power it should HELP Katech 427 Stroker|Custom Tuned|AFR Ported & Polished Heads|Nasty Cam|FAST Intake|90mm TB|Kooks Headers 1 7/8|Custom X Pipe|B&B exhaust|Spec Stage 3+ Clutch & Flywheel
what sort of power should be expected out of this motor?
what sort of power should be expected out of this motor?
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08-25-2007, 10:20 AM
#9
Originally Posted by corvettetimmy
Probably the AFR's choking it up.
Thats a lot of cubes to feed.
Thats a lot of cubes to feed.
We need more details on the vehicle plus a dyno graph would help out.
__________________
2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.
2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.
08-27-2007, 04:03 PM
#13
Launching!
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Damn....Don't know how my dyno got discussed over here but imagine someone lifted it from the caddy forums...
Comp Cam - (although nasty) I'm not 100% but was told in the high 240's (still confirming as we speak)
Katech 427 short block
AFR 225 72cc heads
FAST 90mm intake manifold
LS2 Throttle Body
Kateck camshaft/knock sensor adapter harness for LS2
Catless B&B - X pipe
Kooks 1 7/8 headers
Although crued for now I'm using a stock tube (no room) into a volant box/filter ---
Pics of dyno
Obviously I'm getting more nervous after breaking into the engine because I was really hoping for higher numbers.
thx,
Chef
08-27-2007, 04:40 PM
#14
461 rwhp 441 rwtq on a Mustang Dyno is very respectable for a CTSV. Hard to compare it to a dynojet as the Mustang Dynos vary more based on the variables you can input per vehicle. Love tuning on them though.
__________________
2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.
2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.
08-27-2007, 05:03 PM
#15
Yeah, if they loaded with the weight of the car, that would really pull the numbers down. Before you have a heart attack, find a dynojet and make a quick pull.
Does it feel strong? Take it to the track and see what she's got unless it is actually running poorly.
Does it feel strong? Take it to the track and see what she's got unless it is actually running poorly.
08-27-2007, 06:00 PM
#16
Launching!
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Feels real strong...Stronger than the LS6 with supercharger - torque all the way through and no lag or heat soak.
He did mention 25% variables were added I believe? what does that mean?
He did mention 25% variables were added I believe? what does that mean?
