IROCgiraffe

iTrader: (3)

I think you are referring to NufNuff's thread.

ZZ3Astro

Up until this year I've been trying to keep it as stock as possible. Now I'm willing to do a whatever needs to be done to get it faster, but I insist and carrying the stock TPI intake into the 6's first. At some point I will have to visit the LS vs Gen1 argument again. Not until I break the rear and trans again and upgrade to heavier hardware.

Took it to lunch today.. let it heat soak for 1 hr and boosted a few mins after restart to a lovely 10.4 AFR at 16 psi again! Very good sign, but way to early to call the cows home with this car as you all know. By the end of this weekend we will know.

DIGGLER

iTrader: (1)

Still love the car with the tpi intake. More people would talk about this than an ls swap. And It would easily go mid 6's with the right trans/converter/rear. At 24psi the power will be there easily.

I think if I was to swap intakes on this car it would be a miniram or superram. Just to keep it looking vintage.

ZZ3Astro

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badgta

iTrader: (4)

Bro don't get disheartened over things.

You can build a 9" for 2500 or less.

Ebay is your best pal when it comes to saving for one. Buy you a Moser 9" bolt in housing/axle package with 31 splines. You can get a Strange nodular center section housing for 250 to your door with the 3.062 bearing which is more than enough for what you have.

Buy all of your gears, posi etc online through Ebay. I recommend the Detroit locker over the Trutrac personally because your car is more track oriented. The bearing kit and gears you can get through Yukon is cheap but rugged and I know if those gears can withstand off road rock climbing high hp engines then they can handle bursts or drag strips here and there as well.

I am total agreement on the forged bottom end. You can get a Eagle 4340 forged crank off the Bay for under 500 plus some killer h beams cheap also. For pistons I recommend Probe factory performance series with the 2618 alloy. Hit up Skip White for a deal on them through his White Performance out of Kingsport, TN.

Hang in there man! Your almost to where you want to be and there is no reason to give up over it, heck just park it for a while and relax.. No reason to let it get to you, that takes all the fun out of it!

Adam

ZZ3Astro

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no new tires

Thats because you have all the money in the world and yet you play with 340 and w255 pumps...

-ill leave it at that for now

project89

iTrader: (1)

Wire up a toggle and turn the second pump on when cruising. Or right before u jump on it just to test .U should be able to turn on the second pump rigjt at 1 psi without issues

project89

iTrader: (1)

Prolly go pig rich for a slit second when the second pump kicks on so expect to have to adjust the ve table


I run three pumps on my car

Orr89RocZ

iTrader: (20)

Second pump on may spike pressure and like said that ve region may need adjusted.

Happened to me, car leaned out too fast before pump turned on for some reason. Think it was a 4 psi hobbs.

When i added my hobbs for 3rd pump i had it set at 22 psi since i shouldnt need fuel until after 24 psi. Well dyno showed lean so i brought 3rd pump on closer to 17-18 psi

ZZ3Astro

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DIGGLER

iTrader: (1)

great news! looked good in the vid.
time to pick up some more power.

is that the bose speaker deal over the trunk?

ZZ3Astro

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camaro1185

I have been following you on youtube since the almost the start of your builds and I am always eager to see your updates. I just love watching your videos on the iroc and your attention to detail is great. There are many hacks who build cars but you seem to plan and excite things after much thought and consideration for the final goals. I just found this and will have to catch up.

Im glad to see the fueling problem is looking more positive.

As with everone else here, I have had the LS/SBC argument with myself numerous times and just cant decide. More because to this point my mods are all SBC related and if I went LS it would be like starting from scratch....not to mention the originality thing.

Sorry to get off topic, just wanted to check in.

ZZ3Astro

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project89

iTrader: (1)

grab a set of the assualt heads , they are proheader castings and can go over 300cfm with just a lil bit of porting

Orr89RocZ

iTrader: (20)

Its not about the flow number lol ls3 heads flow a ton but dont seem to make serious power when pushed. Atleast naturally aspirated. I havent seen them make the numbers the flow figures should support. 320-330 cfm should be capable of 750hp but never seen stock head make that much. My sbc heads flow 330 by .700" but have been used on 700-800 hp na motors.
That said they do work well for budget and boost.

My friends 408 lsx with big prc heads made 1091 whp this weekend on 20 psi or so. C16.
My other friends stock longblock 6.0 with L92 heads made 1052 whp on i think 25-26 psi, E85.
2 vastly different setups but very similar power but one alot more budget oriented

If you go ls, under or at 1000 hp, stick to budget type stuff. Seems to work great. If you want more power go 6 bolt block lsx because you will have a hard time keeping things sealed with stock oem blocks. At this point sbc vs lsx is about same price

vortec350s10

I've been trying to sort out what would be my next step as well, whether to go budget LS or build a nice gen 1 sbc. It's a sucky boat to be in, on one hand it makes a lot of sense to go LS for "mild" hp numbers (under 1,000) like Orr said since an engine can be had for so cheap. You gotta step back and think how awesome it is to be calling under 1,000hp "mild". It's a great time we live in for playing with cars. On the other hand, a turbo LS is so common now that you are almost more "original" now to run a boosted sbc! I really hate the idea of starting over with making headers, re wiring everything, changing cold side, throttle cable, and all of the other little details again, but I still think it'd be cheaper than throwing thousands into a boost built sbc. At this point I'd almost rather pay the price for the expensive sbc components and a dart shp block than have to re-engineer the hot side and all of that. Maybe I'm getting lazy as I get older, but it's just not exciting to me redoing what I've already done. Maybe I'll save the LS build for my next car.
"First world problems", haha.

Orr89RocZ

iTrader: (20)

I did the ls1 pcm conversion so if i ever do kill this sbc, i could go budget lsx to get me up and running again as easily as possible lol

camaro1185

The ls pcm is so capable its almost stupid to try and tune the factory 3rd gen pcm (if heavily modded). I love the idea of the aftermarket self tuning stuff if your someone who changes your combo a lot, but if you are going to build a motor and stick with it for a few years, LS pcm all the way.

I am still undecided what route I will take sbc/ls but I know it will most defiantly be controlled by LS pcm.

ZZ3Astro

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Jay_rich

iTrader: (4)

Best of luck! Hoping for some good results for ya!

Jay

ZZ3Astro

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DIGGLER

iTrader: (1)

ugh!!

no new tires

WHAT!?!?

DIGGLER

iTrader: (1)

there is no way people are going to come out and watch tnt for 20 bucks. thats how much they charge for full blown events up here.

ZZ3Astro

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DIGGLER

iTrader: (1)

maybe they will lighten up on some of that stuff next season. none of our local tracks do tech, but they enforce helmets and roll bar at 7.50 and quicker. they run shadyside year round as long as its above freezing. (they use a bucket in a water barrel to wet the waterbox, and i've seen them breaking the ice in there to get water) lol

meanwhile, maybe you could experiment some more with the car and get some dyno time with more boost?

ZZ3Astro

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Jay_rich

iTrader: (4)

I would go with a 7865 or 7675. Depending on what you are looking for on3 now makes one that appears to use the same turbines as the turbonetics stuff. for like $400. I wanna say the turbonetics is like 1300, that may be BB though. I dont think I would recommend any precision turbo after reading about all the failures. I cant even count on one hand how many TT builds went feom twin 62mm precisions to on3 turbos bc they are cheaper then rebuilding a precision.

Jay

Orr89RocZ

iTrader: (20)

Few guys around me making steam with on3. I am surprised lol never thought something that cheap would work so well

I got one for my 305. 70mm. For a 350 i'd try their 76 but the smaller p trim style hotside will limit power. You should have a slightly bigger turbine. On3 maybe larger options i am not sure

DIGGLER

iTrader: (1)

Think I would do a 76. Trans and rear will give up the ghost soon. Lol

ZZ3Astro

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quadgoat

iTrader: (1)

I have a Turbonetics TC78 (7868) on my setup and it hasn't given me any issues, aside from the fact that I put a very stout 412 in to replace my 350 since I couldn't get head studs to seal up in a stock GM block, and now the 68mm exhaust turbine is WAY too small! Torque peaks at 3500 rpm falls off pretty drastically after 4000 rpm lol!

That being said, if space is available I would very seriously look into the Borg Warner units. They are awesome pieces, durable, and relatively inexpensive! They're just physically really big.

I'm currently trying to figure out how to fit a bigger unit in my setup, I'm gonna need a minimum of an 85mm wheel on the hot side though so as not to choke out this new engine!

I agree with your concerns about Precision, as I have been reading about a lot of issues with them lately, since one of my top options for my setup is a PT88...

The new Turbonetics 7675 and 7875 are sweet units, and I think you can do better than that price on eBay. Check with Yates EFI and/or Huron Speed and see what they can do for you!

-Paul

DIGGLER

iTrader: (1)

i hate reading that stuff about precision while i have a pair of their turbos yet to be ran... eww.
i would also suggest looking into one of the borg warner turbos if not a precision. very good bang per buck. garrett is always good of course, but might be a bit more expensive.

Orr89RocZ

iTrader: (20)

Pm me what you are considering and i'll see what i can do for price. My friends shop deals with precision, garrett and turbonetics i believe. Also borg warners

ZZ3Astro

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Orr89RocZ

iTrader: (20)

I think you'll like it. It should respond well. That power level should be better with the larger turbine wheel.

JAYDUBB

From what I have been reading and watching your build, I think youre gonna be in for a big surprise... and a blown up trans... LOL. Get ready to retune! LOL!

I just got an On3 7875 myself. Buying parts while I can...

ZZ3Astro

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Orr89RocZ

iTrader: (20)

Thats still slight restriction with the area/geometry change in the housing. But stock motors def struggle over 4000. It should pull but power is wayy low at those rpms

I've taken stock L98 to 6500 by accident once. Trans downshift manually lol. It revved but certainly wasnt making power

ZZ3Astro

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project89

iTrader: (1)

let me know how well that on3 turbo works out , im torn between a pair of t4 ptrimed gt3582's , or a pair of on3 66's , i hate to buy from that guy because hes a douche and a half, but i have plans to buy a new kx450f or rmz450 to go desert racing with this year, so the turbo budget is going to have to suffer

Orr89RocZ

iTrader: (20)

My buddy is using on3 76's on his twin turbo lsx stang. Been 8.65 and has been driving alot. It has dozens of dyno pulls and track pulls so those turbos are working. I got one for my 305 car

ZZ3Astro

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