Hp estimates?
#12
05-02-2011, 12:37 AM
The h.p. difference between the OBD1 and OBD2 cars is because in 96 the Camaro now had 2 cat converters. That's where the gain came from, the engines are the same. A good rule of thumb is that an automatic car will lose in the neighborhood of 15% h.p. to the wheels. It's not a preset flat number of h.p. lost. Based on the one in the video getting 230 at the wheels puts it right on the money (233 h.p. would have been a dead nuts 15% loss from 275). Their gain to 277 at the wheels equates to having 325 at the crank, a 50 h.p. gain. Not too shabby!
#14
05-02-2011, 01:04 AM
Join Date: Oct 2007
Location: The 'Burbs of Chicago
Posts: 18,306
Might be, can't say with certainty. But it's apples and oranges anyway. Take a pre-96 and a 96, do the same mods to the engine, have the computers tuned the same, and they should both end up being equal (in a perfect world). The engines are the same, the ignition is the same. The original stock h.p. differences come from outside the engine.
#17
05-02-2011, 09:40 AM
I dynoed 265 rwhp, 305 tq stock but I did have dual exhaust. After the bolt-on's in my sig its at 309 rwhp, 336 tq. A 44 rwhp gain. So,,, An airfoil, cai, ewp, ASP dampner set (pulleys), 1.7 rockers with springs, a tune and shorty headers with x pipe has netted me 44 rwhp. I do have a new BBK 52 twin sitting around maybe I'll try that next.
#18
05-02-2011, 09:57 AM
Join Date: May 2007
Location: Fort Brag NC (no longer in iraq)
Posts: 2,200
The h.p. difference between the OBD1 and OBD2 cars is because in 96 the Camaro now had 2 cat converters. That's where the gain came from, the engines are the same. A good rule of thumb is that an automatic car will lose in the neighborhood of 15% h.p. to the wheels. It's not a preset flat number of h.p. lost. Based on the one in the video getting 230 at the wheels puts it right on the money (233 h.p. would have been a dead nuts 15% loss from 275). Their gain to 277 at the wheels equates to having 325 at the crank, a 50 h.p. gain. Not too shabby!
Dead on. A stock LT1 should lay down 230-240 RWHP give or take a few. With good intake, exhaust, and tune you gain 20-30 whp easy. If 300 is your goal then (intake, headers, y-pipe, cam, and tune) will get you there with no problem. The LT1 loves good cams and can pick up good numbers with no problem.
#20
05-02-2011, 01:17 PM
pcmforless is a well known name...
when it comes to tuning you can really screw your car up if the person responsible for the tune isn't doing their job right.
when it comes to tuning you can really screw your car up if the person responsible for the tune isn't doing their job right.