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LinkBack | Thread Tools |
05-07-2008, 08:22 PM
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#51 |
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Road Racing Blazer
Age: 21
Join Date: May 2004
Posts: 3,379
Location: Santa Cruz, CA User is: OffLine  |
Re: Max HP from a 4.3?
I was wondering why his numbers were so low and I realized it's a 96
 .190 to wheels with that many mods is a huge dissapointment, most guys with those kinda mods are running 40-50hp more at the wheels How much better are the 98+ heads that 96? Also is it TBI? Last edited by Daveman2 : 05-07-2008 at 08:25 PM. |
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05-07-2008, 09:23 PM
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#52 |
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I didn't build it for you
Age: 37
Join Date: Oct 2004
Posts: 1,618
Location: Lawrence, KS. User is: OffLine |
Re: Max HP from a 4.3?
Not tbi, CSFI. 96+ are relatively the same with subtle differences. His numbers are low for some odd reason but it isn't because it's a '96.
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05-07-2008, 09:34 PM
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#53 |
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Registered User
Age: 19
Join Date: Jul 2006
Posts: 190
Location: Phoenix, AZ User is: OffLine |
Re: Max HP from a 4.3?
96s are vortec heads right? Even if they were CPI heads he should still be making well over 200whp. I'd say it's the tune
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05-07-2008, 09:38 PM
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#54 |
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truth
Age: 25
Join Date: Oct 2005
Posts: 23,229
Location: arkansas User is: OffLine |
Re: Max HP from a 4.3?
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05-08-2008, 10:03 AM
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#55 |
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Registered (Ab) User
Join Date: Feb 2008
Posts: 3,181
Location: League City, TX (Houston) User is: OffLine |
Re: Max HP from a 4.3?
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05-08-2008, 10:07 AM
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#56 |
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Registered User
Join Date: Apr 2006
Posts: 13
Location: User is: OffLine |
Re: Max HP from a 4.3?
Never had it yo the track. Just a plain stock white ss, no ext. mods
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05-08-2008, 10:11 AM
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#57 |
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Registered User
Join Date: Apr 2006
Posts: 13
Location: User is: OffLine |
Re: Max HP from a 4.3?
ton of dyno pulls playing with the timing and fuel curve. kept givin it a little more and a little more till power started droppin off. i'm confident the tune is pretty good.
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05-08-2008, 10:20 AM
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#58 |
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Registered (Ab) User
Join Date: Feb 2008
Posts: 3,181
Location: League City, TX (Houston) User is: OffLine |
Re: Max HP from a 4.3?
Did you put an adjustable timing chain sprocket in it? Maybe the cam timing is off?
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06-28-2008, 01:00 PM
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#59 |
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Registered User
Join Date: Jun 2008
Posts: 11
Location: User is: OffLine |
Re: Max HP from a 4.3?
Just a comment: BAck in the early '90's, I was running 300+...through 8 rear ends before narrowing a super duty 12 bolt truck rear end, 1 pc steel axles, 4.10, w/ a power trax posi( DO NOT PUT ONE OF THESE on a daily driver...) It went 245K, when another NV 3500 died...The engine was an absolute performance dream, it started every day and HAULED ASS!!! It did have a sweet spot in the power band: I got 19+mpg cruising @ 110 mph, at 75 it got about 18...
I have a querstion, I now have a '97, bone stock, want to build it, I have an old roller, no BS block,(BS= balance shaft...), I want to know how much HP can the stock injectors produce?, Are there any after market injectors available, I see above someone mentioned an after market intake, injectors and all? Any hard numbers or informed speculation would be appreciated. Thanks, George PS what are the best heads? |
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06-28-2008, 01:25 PM
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#60 |
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Registered (Ab) User
Join Date: Feb 2008
Posts: 3,181
Location: League City, TX (Houston) User is: OffLine |
Re: Max HP from a 4.3?
Stock injectors are near maxed out. Changing the AFR to 12.5 will hit 100% on the IDC. Some have added injector bungs to the Edelbrock #2114 manifold. Others have tried the Mercruiser Marine manifold, but it's cast iron. Either way, you'll need major tuning adjustments. I can't guess on the HP output.
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06-28-2008, 03:24 PM
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#61 |
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Registered User
Age: 17
Join Date: Aug 2007
Posts: 181
Location: User is: OffLine |
Re: Max HP from a 4.3?
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06-28-2008, 03:47 PM
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#62 |
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Supa
Join Date: Sep 2007
Posts: 1,045
Location: Hastings, MN User is: OffLine |
Re: Max HP from a 4.3?
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06-28-2008, 04:26 PM
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#63 |
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the youngest has been
Age: 21
Join Date: Jul 2004
Posts: 2,874
Location: FLORISSANT MO User is: OffLine |
Re: Max HP from a 4.3?
 but then again what the **** do i know ive never modded an s10 before in my life.its not like i didnt have a 4.3/t56'ed sonoma or a blazer with a 12 second 4.3 and a t56 or the same blazer with a 12 second 5.7 and a t56. now the same blazer currently has an ls9/t56 combo. i was going to share with the forum how to use a non balanced shaft block and retain the 96+ heads and fuel injection, but im just a dumb ass that don't know shit so i guess ill just keep my mouth shut |
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06-28-2008, 04:36 PM
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#64 |
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truth
Age: 25
Join Date: Oct 2005
Posts: 23,229
Location: arkansas User is: OffLine |
Re: Max HP from a 4.3?
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06-28-2008, 05:06 PM
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#65 |
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< EST 1989....>
Age: 19
Join Date: Aug 2007
Posts: 490
Location: Merritt Island FL User is: OffLine |
Re: Max HP from a 4.3?
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06-29-2008, 02:23 PM
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#66 |
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Registered User
Join Date: Jun 2008
Posts: 11
Location: User is: OffLine |
Re: Max HP from a 4.3?
I don't want to dis anybody here,...but...you can get 300 dependable HP out of a stock block and heads...w/ SOME work...I did a '92 Vortec, port and polish,( heads and complete intake), polish & cc, regrind, full rollers, msd/crane, full headers, X-over, duals(2"), 3" duct on intake,as in full round, block egr, toss the P.O.S. balance shaft, balance rotating ass., stock valves and pistons(polish tops), ran synthetic, thrashed it daily, broke multiple rear ends( finally went to a narrowed 12 bolt super duty truck w/ 1 pc steel axles and a power trax(did't like on the street...the power trax that is, the 12 bolt was abit heavy, relatively inexspensive, and TOTALLY INDESTRUCTABLE)
It was in an '84 S10 Blazer 4X, flat-out hauled ass, got "great gas milage" 18 hwy @ 75, (19 @ 110), ran for 245K, it was retired and put out to pasture... It was hands down the best, most fun, most reliable engine I ever had. Yeah it idles rough...WHO CARES...When the plenum opened up, IT WAS ALL GOOD...the thing sounded like an MX bike...Too bad they stopped making that manifold... The Syclone guys were posting like 170 1/4 miles, @ 620hp and 780tq, w/ 25+/- pds/boost and 5500 red lines... what more do you need? PS I have some fun and USEFUL INSIGHTS on all of this, also I could use some Q&A on newer 4.3 tech...where might I get that ? Thanks, onewingman PPS I've been flyin hang gliders for the last 36 yrs, if interested, I can hook you up... |
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06-29-2008, 02:37 PM
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#67 |
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Registered User
Join Date: Jun 2008
Posts: 11
Location: User is: OffLine |
Re: Max HP from a 4.3?
Hey, Tippman 243,
just noticed your dump-ass post...don't get all knotted up, I'm listening... I fighure on my old '92 I was gettin around 300 or a little better, I have a '97 which is achin' for more...I have an old non BS(balance shaft) block that's been laying around, I kept my old ported and polished '92 manifold( always wanted to put a rail and real injectors in there, also, I have speculated that milling off the cast throttle body and replacing it w/ a 58 would spice thiongs up a bit...) Are all the heads the same after '96 or are there better ones?... I'm flinching about the after market crank expense, anything new on that? Also, any hard numbers on what the stock '97 injectors can produce HP wise? Are there any after market fuellie manifolds around? enuf 4 now...Thanks... |
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06-29-2008, 07:37 PM
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#68 |
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Registered User
Age: 17
Join Date: Aug 2007
Posts: 181
Location: User is: OffLine |
Re: Max HP from a 4.3?
my bad, i just dont like false claims. By the way im no ****in noob.
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06-29-2008, 08:25 PM
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#69 |
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VC Vice Prez
Age: 22
Join Date: May 2007
Posts: 1,549
Location: prattville, alabama User is: OffLine |
Re: Max HP from a 4.3?
yes kid, you are a noob. hell i have been on here longer than you, have 700 more posts than you and i still get called a noob. quit crying and suck it up. its just internet fun. |
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06-29-2008, 10:50 PM
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#70 |
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the youngest has been
Age: 21
Join Date: Jul 2004
Posts: 2,874
Location: FLORISSANT MO User is: OffLine |
Re: Max HP from a 4.3?
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06-30-2008, 03:45 PM
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#71 |
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truth
Age: 25
Join Date: Oct 2005
Posts: 23,229
Location: arkansas User is: OffLine |
Re: Max HP from a 4.3?
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06-30-2008, 10:20 PM
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#72 |
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Registered User
Join Date: May 2008
Posts: 4
Location: User is: OffLine |
Re: Max HP from a 4.3?
I posted this in the V-8 LSX section and was told it was an old article, but it was new to me as I just found it this weekend.
http://www.hotrod.com/featuredvehicl...s10/index.html 415hp/360-lb-ft worth of non-smog-friendly, balanced-and-blueprinted 4.3L V-6: 11.2:1 compression, a 0.648-lift, 248/252-degree cam, 1.7:1 roller rockers, heads flowed to 325 cfm on the intake side, and a custom PFI setup with Holley ProJection shooting into a 1,000-cfm throttle body. One Question: HOW BIG IS YOUR BANK ACCOUNT/CREDIT LIMIT? Awnser this and you will know exactly how much HP your 4.3 can make. Is it this big??? http://www.nelsonracingengines.com/V...00HPV6HIGH.WMV |
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07-01-2008, 03:51 PM
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#73 |
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I didn't build it for you
Age: 37
Join Date: Oct 2004
Posts: 1,618
Location: Lawrence, KS. User is: OffLine |
Re: Max HP from a 4.3?
Gee, good thing you showed up to clarify all that.
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07-01-2008, 04:12 PM
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#74 |
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i hate people.
Age: 19
Join Date: Aug 2005
Posts: 442
Location: Memphis, tennessee User is: OffLine |
Re: Max HP from a 4.3?
damn you just encouraged me to put more than a intake, gears, and exhaust on my S!  |
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07-02-2008, 12:45 PM
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#75 |
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Active Duty Marine
Age: 26
Join Date: Jun 2008
Posts: 56
Location: Southern California User is: OffLine |
Re: Max HP from a 4.3?
ONEWINGMAN.... no pun intended, but take me under your wing please. When I read psots like yours, it makes me wish I tried to start learning mechanical siht a lot earlier on.
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07-02-2008, 04:37 PM
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#76 |
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Registered User
Age: 19
Join Date: Jul 2006
Posts: 190
Location: Phoenix, AZ User is: OffLine |
Re: Max HP from a 4.3?
aww man the crack at 191HP rule has been exposed!? who.. where.. why..
It's been said that a persons IQ is often directly relative to their ability to interpret sarcasm, as much so as it is to your ability to interpret the meaning of a complex poem... We all know who I'm talking about THE NOOB |
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07-03-2008, 02:13 PM
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#77 |
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i hate people.
Age: 19
Join Date: Aug 2005
Posts: 442
Location: Memphis, tennessee User is: OffLine |
Re: Max HP from a 4.3?
 haha....that was pretty good. but i too am a noob. But in my defense i've had this truck since i was 14 lol |
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07-04-2008, 04:52 PM
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#78 |
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Registered User
Join Date: Jun 2008
Posts: 11
Location: User is: OffLine |
Re: Max HP from a 4.3?
Must be about 8-9 yrs ago...Duttweiler made an absolutely gorgeous Buick Grand Nat, set-up for the 1/4. It was pulling 1400+ outta a 3.8...He didn't run it at that output...wonder why...? He did run it at 1100+ at something obscene like 180...didn't crack the block...musta used 1" studs...& shrink wrap...I don't think he was gettin' 31...I'll look for pics, (of the engine), whoever did the glass work on the front clip was good.
PS I know it's not an S, but it is a thing of beauty... PPS so it's like the man said," money = HP" |
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07-05-2008, 07:32 PM
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#79 |
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Registered User
Join Date: Jun 2008
Posts: 11
Location: User is: OffLine |
Re: Max HP from a 4.3?
OK, OK, OK...all U sticker guys: I'll set U up on the inside line @ my EBAY store...Just mention the forum & U git an auto matic, as in 4L..., 30% 0ver drive discount...see me at EBAY.com/EA>TME.stickit2U.cramit...NO SHIT, the right stickers can cut UR traps by 6 seconds...& them ain't 1/10's neether!!!
So, don't miss out on thas 1ce in a lifetiem oppertunity. Be one of the first 55 million to order and you WILL recieve not only awl the stickers of UR dreams, but the original factory GINSU KNIFE SET AT NO ADDITIOINAL COST 2 U!!! But WAIT!!! There's more!!~! That's right I said MORE!!!If U order in the next 5 dayz, I'll throw up, er, a IN, The CHOP SUEY RICE BURNER DICER...Now listen close, U might be the first on nUR block to slice, dice and otherwise SHRED one of them SUCKY LIL COCKEY FUKZ IN SOME DICKLESS MIDGET CAR...oOOPS, SORRY TO THE MODERATER...I just git carried away sometimes...I mean, my seldom Apologies included, terrbly sorry for my indescrete behavior...it's a first and I well, ok don't exactly promise that it'll never happen agin... So, "When all else FAILS and you have exhuasted every other POSSIBLE means of escape: BE CAREFUL...until then HAUL ASS!!!!" tHAT'S 36 YEARS of HANG GLIDING TALKING, CANYON RACING MULHULLAND, LAUREL, COLDWATER, BEVERLY GLENN, MALIBU, TOPANGA, TUNA, ENCINAL, LOS FLORAS,. DEER CREEK, CORRAL CYN, THE LIST GOES ON...ANYBODY WANT TO TALK STORY BOUT THE OLD DAYS...? Other than that: Haul ass, have fun, don't git caught, and well be safe when you absolutely must...otherwise:FOO GET ABOUT IT!@!!! |
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07-05-2008, 07:39 PM
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#80 |
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Buick drivin 4by draggin
Age: 25
Join Date: Mar 2004
Posts: 8,674
Location: Green Hills/Nashville User is: OffLine |
Re: Max HP from a 4.3?
I put bolt-ons on my truck once...Straight up blew the block in half!!!! True story...
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07-05-2008, 08:27 PM
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#81 |
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it really is
 Age: 22
Join Date: Jan 2007
Posts: 17,854
Location: Clay City,IN User is: OffLine |
Re: Max HP from a 4.3?
friend of mine put stickers on his 94 4.3/auto and it shot the heads through the hood
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07-05-2008, 08:35 PM
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#82 |
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Road Racing Blazer
Age: 21
Join Date: May 2004
Posts: 3,379
Location: Santa Cruz, CA User is: OffLine |
Re: Max HP from a 4.3?
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