How much did I rob myself?
How much did I rob myself? Please help me out by telling me what you think.
January dyno = 360 RWHP stock heads TR220/220 cam ... nice day and a little cool.
October dyno = 400 RWHP ... nice day a little warmer than the dyno above. Newly forged motor with Mahle power pak, new AFR 205's, AFR 224/288 +1 cam. Mezziere Electric water pump, U/D pulley, 30# SVO injector's.
At first I thought a 40 RWHP gain was not very good with the new AFR heads/cam, pump, and U/D pulley. Then I realized, I (1) had Random Tech 10 1/2" bullet cats welded into the ORY; (2) the most restrictive plate in the Borla exhaust; (3) and the weather was probably 15* warmer since the last dyno in January.
How much RWHP do you think these three things above robbed me ... plus I already had a TR 220/220 cam? I know the H/C etc. probably realistically gave me 55-60 RWHP.
January dyno = 360 RWHP stock heads TR220/220 cam ... nice day and a little cool.
October dyno = 400 RWHP ... nice day a little warmer than the dyno above. Newly forged motor with Mahle power pak, new AFR 205's, AFR 224/288 +1 cam. Mezziere Electric water pump, U/D pulley, 30# SVO injector's.
At first I thought a 40 RWHP gain was not very good with the new AFR heads/cam, pump, and U/D pulley. Then I realized, I (1) had Random Tech 10 1/2" bullet cats welded into the ORY; (2) the most restrictive plate in the Borla exhaust; (3) and the weather was probably 15* warmer since the last dyno in January.
How much RWHP do you think these three things above robbed me ... plus I already had a TR 220/220 cam? I know the H/C etc. probably realistically gave me 55-60 RWHP.
I suspect a "green" motor that is still on the tight side. Unless it was machined/honed with torque plates, you probably will pick up some nice hp and tq after about 5000 miles. The heads should have been worth 30-35 rwhp alone. The cam should be worth a minimum of 10 rwhp. The Meziere is worth 5-6 rwhp and the UD pulley is worth 5-7 rwhp. Your gains should really be around 50-58 rwhp. Change in weather and a tight motor are most likely the culprits.
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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.
Man, I hope you're right. I test-drove it for about a mile and it feels a LOT stronger. I agree on the numbers for the parts you mentioned. That's why I think the cats, the restrictive Borla plate, and the weather hurt my numbers. Maybe I can get some good E/T slips ... that will tell all. Hopefully, I can break mid-11's and 120+ mph on steet tires.
Cats shouldn'nt be costing you too much power. When I dropped my catted y-pipe and went with open headers and extensions (no cats), I only picked up 6 rwhp. I think the cats were only costing me 4 rwhp.
Originally Posted by Patrick G
I suspect a "green" motor that is still on the tight side. Unless it was machined/honed with torque plates, you probably will pick up some nice hp and tq after about 5000 miles. The heads should have been worth 30-35 rwhp alone. The cam should be worth a minimum of 10 rwhp. The Meziere is worth 5-6 rwhp and the UD pulley is worth 5-7 rwhp. Your gains should really be around 50-58 rwhp. Change in weather and a tight motor are most likely the culprits.
Ya!! What he said
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