breathment

ok, i know the stock HP is rated at 220 i think. or something around there. BUT, i was reading a car and driver article and they said that they thought it had ALOT more, and i quote "more like 270 HP".. and i'v heard other people say that its more then 220. so does anyone know for a FACT wut it is?

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88' GTA 350 MODS---> air foil, K&N, Shift Kit, 180* therm, TB bypass

irocbsa

OK, at the crank (which is the horsepower manufacturers provide) the 350 was rated at 220 for '87, 240 for '88 (maybe 230 for 88, I'm drawing a blank) and 89, and 245 for 90-92. Real wheel HP is anywhere between 180 and 200. I think somebody on this board came out with 192 on a stock L98.
bsa

[This message has been edited by irocbsa (edited August 17, 2001).]

Mista

can give you stock 86 305 peanut cam specs.......
157 HP and 265 torque at the wheels.

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86 T/A 5.0 A4 & 2.77 gear
15.62 @ 86 mph
93 Civic 1.6L
13.5 @ 100 mph

NUN

mista where did you dyno your car my stock 86 ta 305 tpi runs 15.4 all day and all night with 2.77 gears (garbage)to run that time with those crappy gears you need at least 210 hp and thats the stock rating for that year the tourqe i really couldn't tell you but any where from 270 to 295

Mo

He's talking about HP at the wheels

Mista

Mo is right. After correcting I get 197 hp and 265 torque. The dyno passes were made in Drive. I also have a Corvette converter (2100 stall) that was put in by a GM dealership in 1991. I just have to get the rear brakes adjusted to hold it. At 1600 rpm the rears break loose while trying to launch.

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86 T/A 5.0 A4 & 2.77 gear
15.62 @ 86 mph
93 Civic 1.6L
13.5 @ 100 mph

93ND500

Hey Mista,

You going to the Cincy Speed Power Fest?????

Jono

173.3 rwhp 144,000 km stock 305 at 91 degrees so a stock low mileage 350 should be considerably higher

Mista

I might go, but dunno if I'm gonna race. The faster car (Civic) has not been upgraded (fuel pump) to meet the now higher NOS loads.
I took the TA today to TriState and the air was thick!

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86 T/A 5.0 A4 & 2.77 gear
15.62 @ 86 mph
93 Civic 1.6L
13.5 @ 100 mph

tacoboy

guys i dont think you can really use gm's stock ratings, they have always been known for conservative ratings, mostly to prevent people getting pissed when their car dynos at 1 hp less than the rating or something like that. for instance my boss's (dealership owner) base corvette, which is rated at 350 hp, dynoed at 383 horses...just a thought

irocbsa

Believe it or not two "identical" engines from the factory can put out very different horsepower and torque ratings. Even the manufacturers will admit that every once in a while a "real good one rolls of the line." Sounds like that Vette was one of them
bsa

NUN

i never dynoed my 86 305 tpi but i figure 185-190 to the rear tires i changed the chip and the muffler tpis air foil 8mm wires split fire plugs best time 15.42 at94.2 on g-tech very consistant times for all the cars we tried very happy with this device planning on changing the cam but first i have to change the gears to a 3'42 and then by a slp cold air kit and then change the cam and find someone to burn the chip

Dark_Boba

Don't forget the 1989 Turbo Trans Am, rated at 250 horses, and it really put out over 300. Of corse GM did this because there is a unwritten rule, no passenger car will be rated with a higher HP of that year's corvette.

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