89-5.7Chevy

can anyone tell me what kind of rwhp and torque i'd be looking at? 5.7 l 89... in sig thanks. pat

'89ChevyMadneSS

iTrader: (3)

i looked it up at one point... something like 180 stock i believe kinda dissapointing huh?

89-5.7Chevy

No i checked and got someone else's answer too... lol tbi were puching 210 hp and 300 pound feet of torque... little better lol

'89ChevyMadneSS

iTrader: (3)

w/e it is it feels more to me in my truck, just going by the SOTP.

89-5.7Chevy

lol true. is it possible to make one of these trucks fast? and any idea what your were running at the 1320 stock? this is my first truck so i need alot of help lol.

YenkoST

iTrader: (11)

Like I've told you before, they are a high 16 second truck. I have the 1990 in my sig and its a 12 second truck at the moment, just getting faster. The 350 TBI engines were rated at 210hp and 300 ft lbs of torque. Don't feel bad though, the pre-86 350s in the trucks was a 160hp. The 305 TBI is 180 hp though.

You really need to start with the basics, Open air K&N filter assembly, headers(short or long tube doesn't matter), exhaust(if you go duals go 2.5", if you go a single go 3.0"). After that, but in a shift kit in your tranny to firm up the shifts. Those mods will get you into the low 16's. Then you have tons of options once that is done like 3.73s, electric fans, add some vortec heads, cam, and vortec intake(cheapest option) or a set of Dart, AFR, etc 180cc heads, cam, and Edelbrock intake. Should be good for 14's at that point.

89-5.7Chevy

Thanks for the info. I've already got my exhaust planned out, three inch off the y into a single cherrybomb the quietish way lol and to a three inch finish probably dumped before the rear axle. I keep hearing about the e-fans, are they just upgraded rad fans? and do you know what the stock gear ratio is or where i can find it?
Also i can get all that vortec stuff for a decent price, i know a scrapyard owner. are they just a straight bolt-on?

dirt track racer 81

iTrader: (45)

my bosses 87 put down 150 to the rear wheels stock..and now with a turbo, small cam, and edelbrock multiport fuel injections hes at 350 rwhp and 515 rwtq

'89ChevyMadneSS

iTrader: (3)

ive always thought a turbo would be SO easy on a sbc truck...

YenkoST

iTrader: (11)

Vortec is bolt on but you are going to need to replace the springs, retainers, etc so that they match the cam you are going with. You will need a vortec intake manifold though. Electric fans replace the clutch on the water pump. Basically two things happen, you take the rotational force of spinning the fan off the engine and allow it to spin quicker producing more power. Stock gear ratio is 3.08 more than likely. You should see a bunch of codes in the glove compartment, door jam, or under the hood and just look for the rear gear code. I'll have to look up the numbers, don't remember them off hand.

Stock rwhp numbers is about 160rwhp so yeah, that's in the ballpark.