silverado

iTrader: (1)

I put a stroker in my 97 Silverado about two years ago and put down the numbers in my sig. The problem is that it seems that the only comparisons I had were LT1, and LS1 engines, which have better technology and parts. So my question is, what are some decent rwhp/rwtq #'s for a regualr small block stroker? What have been some results of others? (non LT1 or LS1)

terr1bleone

iTrader: (1)

whats in the internals, lt1 and ls1's dont necessarily have better parts. also is it carb'd?

AutoRoc

If you have stock Vortec truck heads on top of a mildly cammed 383 shortblock, I'd say you're making GREAT power at the wheels.

Fade2blk500

iTrader: (18)

Makes good power through an auto, and amazing torque numbers.

ITLstallion04

i'm seeing 460/460 from my 383.

silverado

iTrader: (1)

I dont think its very applicable to compare LS1/LT1 designs with the older technology and designs of traditional small block engines. My heads are mildly ported Vortecs with probably the worst fuel injection design of the 90's. I just was wondering what other street 383's (traditional small blocks) were putting down.

Jordan57

You're power potential is directly related to a few key variables to make this simple...
What is your compression ration with a 58cc or 63cc chambered head? You should be around 10.5:1 for some decent power.

Next up is your heads...the vortecs aren't the best for power. Some brodix or dart heads would make some serious power if you got a nasty cam (bigger than your LT4 hotcam).

Next up is your induction. I'm assuming you are using TBI, throttle body injection. Which was acceptable in its day, but if you were looking to upgrade, a victor intake with a big 1600cfm throttle body on top.

With all those upgrades you would be approaching 500rwhp depending on how aggressive you go. But for right now you are making good power/torque considering the drawbacks of heads, intake design, and relatively small cam, auto, truck drivetrain...etc.

ncd1966

iTrader: (2)

thats not bad numbers my dad has a 383 with vortec heads ported and polished with 2.02/1/60 valves and its 9.5 to 1 compression built for nitrous. it made at the crank 450hp and 500 lbs of tourque with out nitrous.

Villain281H

iTrader: (5)

my 383 makes 373 rwhp and 362 rwtq using 11:1 compression, canfield 195 cc heads (unported), crane 518/536 lift solid cam, victor jr intake and holley 750 hp carb. This is throough a TH350 trans and 3.73 gears and run the #s in my sig at 3475 raceweight on pump gas.

Derek

silverado

iTrader: (1)

Thanks for the info! This gives me an idea of where I stand with other small blocks.

Stroker 1500

iTrader: (1)

I'll be faster one day and the day is comming near

zippy

assuming you're still running the stock injection and intake these are very good numbers. the 19#hr injectors are about screeming at you. very nice work. i would look into doing an intake swap. some people have been pulling this off recently and keeping the stock pcm. an intake swap alone would gain you some hp for sure and leave you more room for future mods with bigger injectors.

CTSV05

I'd say you're doing well also.

I agree, look into an induction change and you'll see some nice power increases.

Stroker 1500

iTrader: (1)

actually there 19# @43.5psi and since the fuel pressure is around 60 PSI they flow 23#'s which is supposed to support close to 400hp according to a injector calculator, although i personally don't think it will support that much.As for the manifold there aren't really any that are simple swaps. The marine manifold would be the easiest to swap, though a manifold swap will be pricey. A manifold upgrade should definately be worth it though and im working on getting a different one on mine. Just need a engine to bolt it to.

Wnts2Go10O

iTrader: (12)

HSR, HSR, HSR,HSR, HSR, HSR, HSR, HSR, HSR, HSR, HSR, HSR(holley stealth ram) hey villain281 what do u think of a 150 shot ona setup like urs?

zippy

i'll get pictures of the ramjet swap a friend is doing. it was originally something i was going to do for one of my customers, but this guy bought the prochargerand ramjet setup from the customer. he'll have the procharger and ramjet up and running here with the stock pcm by the end of next month. i'll post pictures and results.

Villain281H

iTrader: (5)

I've currently got an Edelbrock Performer RPM system set at 100 hp shot. The N/A and nos-assisted 1/4 times are in my sig. I haven't gone much beyond the 100 hp pills b/c I'd be pushing over 600 flywheel hp with a cast crank, and I'd like to get a forged set-up with H-beam rods before hitting the button with more

Derek

silverado

iTrader: (1)

How can you think that the "19lb" injectors wont support 400hp when I'm pushing 420hp at the crank with drivetrain loss?

Stroker 1500

iTrader: (1)

i was talkin wheel hp.. i should have put that in there

RealQuick

iTrader: (14)

That tiny hotcam aint helping!