1986Z28OWNER

iTrader: (1)

Figured i'd start a thread in the power adder section on my twin turbo camaro. The car is currently running and driving, but im always upgrading and changing things in the quest to go faster...

The car is a 86' Z28, built by myself. It has a 400ci sbc, with twin Borg Warner Billet S467's, Chiseled Performance air to air intercooler, controlled by Holley HP EFI. Transmission Specialties Proline 3000 powerglide, Custom PTC convertor, Moser 9" rear end with 3.25 gears.

On pump gas/meth and 16 psi boost the car has made 950RWHP, and on C16 and 22psi it made 1213 RWHP.

So far the car has been 8.35 at 170 mph on a 275 drag radial to the 1/4 mile, and has been 5.44 at 132 mph to the 1/8th mile, with a 1.32 60'.

Orr89RocZ

iTrader: (20)

Might possibly be the baddest street thirdgen build around. Esp on this forum that i know of. Very impressive

1986Z28OWNER

iTrader: (1)

On the 8.35 pass the car made approx 24 psi boost and was on 22 degrees on timing, The turbos show no signs of being out of air yet, and the timing is still very soft for a SBC with the octane of fuel I am running.

The goal is now to put the car into the 7's before the end of the summer, while I could simply just turn up the power, I am always wanting to make the car work better and be lighter. Currently with the radials and a parachute it weighs in at 3650 lbs with me in it.

My next upgrade is the spindles and front brakes, the car currently has a set of factory 1LE front brakes, they are extremely heavy so they gotta go. I have already received the Racecraft 2" drop spindles, which is around a 8lb weight savings. And I have also ordered a set of lightweight wilwood front brakes that are supposed to be around a 50lb weight savings over the stock thirdgen brakes (never mind the heavier 1LE's). They should be here by the end of the week, and should be installed this weekend. Hoping that another 60 or so lb's of the nose, (unsprung aswell...) will make the car leave a bit better (hopefully now into the 1.2x 60 foot range, and I can bring the power in a bit quicker and pour some more power to it up top!





Another issue that needs to be addressed before I can try for 7's, is the fact that the fuel pump is not adequate. Currently the car has a aeromotive Eliminator with a -10 feed line and a -8 return line. under big boost up top, according to the datalogs, the car starts to drop in fuel pressure. To cure this I am going to add a second fuel pump controlled by my holley ECU to turn on at 6psi boost. The second fuel pump is simply an aeromotive A1000 a friend is letting me use till the end of the year.

Jay_rich

iTrader: (4)

I love this thing! awesome pass. Gotta love the rear mount camera, really shows what its all about lol

Jay

Orr89RocZ

iTrader: (20)

Look up the holley dominator fuel pump thats actually 2 pumps into one casing. I think it delivers 200 gph and good to 1800 hp. Your holley can control it well for street and strip. Idk you may need more figuring 1400 whp? Getting close to 1600-1700 flywheel?

1986Z28OWNER

iTrader: (1)

Definitely gives a good idea of how fast it's going. Unlike other on here, I'm all about results, not just blowing smoke up other peoples A**.

1986Z28OWNER

iTrader: (1)

I think it's gonna be in that 1600hp flywheel range, I dont wanna buy another pump this year, as I plan on putting a cable drive mechanical in it this winter, so this is just a cheap, and temporary solution.

sailtexas186548

iTrader: (2)

Bad *** car!

zz17iroc

iTrader: (4)

Surely you and Orr have the fastest 3rd gens on this site hands down!! The best part is that the two of you are doing it with the correct era gen 1 technology and did not jump on the LSX bandwagon. Don't get me wrong it's so tempting to just swap to the latest and greatest from GM, but it's always nice to see someone that knows a lot about how an engine works and what is needed to make it perform, no matter what platform being used. The car is a monster and well built, a true testament of your knowledge and craftsmanship.

Orr89RocZ

iTrader: (20)

Ogie has a f2 procharged setup that ran 7's i believe at 180 or close to that. Long time fan of that car

zz17iroc

iTrader: (4)

Your right, sorry about that Ogie!

Jay_rich

iTrader: (4)

hahah i like it. Ya there are quite the amount of those thread here that's for sure. Im really diggin the front end work, really opens up the front of the car. I wish I had the ***** to cut that much, my last car resulted in a headache of cooling issues after I cut the front end up.

Jay

1986Z28OWNER

iTrader: (1)

Thankfully this runs all day long at 150 degrees even in 90 degree heat.

Orr89RocZ

iTrader: (20)

Thats impressive. Mine likes to be 190-200 on hottest days. Fall air it runs 170-180 with both fans

1986Z28OWNER

iTrader: (1)

All the required components for the brake conversion showed up today. I will likely start on the install friday night.

Racecraft spindles


Wilwood front brakes


Billet aluminum front lug nuts and required strut spacers from racecraft



ALSO, picked up a brand new pair of AFCO big gun rear coil overs that I will install this winter to attempt to shave some more time off the 60 foot. the car currently has Strange Double adjustable shocks and stock rear springs.

NufNuffZ28

iTrader: (10)

AWESOME job man.

If you check my thread you'll see my findings on the holley pumps. Supposedly they only recommend the 12-1800 for cars that aren't on the street a lot and aren't ran continuously for extended times. I am replacing mine with a 1600, since that should support my goals. The 12-1800 is good with E85, race gas, methanol, etc.

I'll be following your thread!

1986Z28OWNER

iTrader: (1)

Thanks!

I need a pump that wont heat my fuel yet will still support my power goals, hence the reason I want to change to a rear mounted cable driven mechanical. I street drive me car A LOT and have had fuel boiling issues on only one occasion.

Orr89RocZ

iTrader: (20)

Thats why i like my intanks. Dont heat fuel. Runs like stock when cruising as only one is operating

junkcltr

iTrader: (1)

Nice fab work. Looks like countless hours into sanding and buffing. One of the nicest third gens I have seen. How big is the aftercooler out pipe? 3.5 or 4"?

rb85TA

I've really enjoyed watching your car come together, you're a talented individual.
I do have a question about the racecraft 2"drop spindles, do you know if they are good for autocross / street? I know you're driving it on the streets, but you're running skinnies up front & I'm looking at 19x10" rims & 285/35/19's.... kinda uncertain that the weight savings are not as important as safety, ( as far as throwing the weight of the car X inertia @ 100+ mph).
Thanks in advance for any input &/or advice. ..Rick

1986Z28OWNER

iTrader: (1)

Surprisingly the paint is single stage and only had a quick buff done, no wet sanding. The guy that painted the car is very talented. The pipe from the intercooler to the TB is 4"

89gta383

iTrader: (5)

Can I ask what your iat's are with that chiseled intercooler? 4" inch inlet/outlet on the intercooler?

1986Z28OWNER

iTrader: (1)

Hottest IAT's I have seen were around 90 degrees. dual 3" inlets, single 4" outlet.

1986Z28OWNER

iTrader: (1)

Picked up another couple pairs of Radial pro's, been through 2 sets of these this summer already, along with 2-3 pairs of slicks. Hoping these will last me till the end of the year lol. Amazing how many tires you can go through when you actually drive your car.



Also got the brakes and spindles assembled and ready to install.



First time ever doing safety wire, not as hard as it looks.









I will be bolting them on the car tonight and will be installing the second fuel pump tomorrow night in preparation for street legal drags this friday, and a double header X275 race at out local track this weekend.

Orr89RocZ

iTrader: (20)

How much weight those brakes save? Good for street use?

1986Z28OWNER

iTrader: (1)

Brakes and spindles should be near 60lbs of unsprung weight loss. Lots of guys locally running these brakes without issue (or similar strange, aerospace etc...)

yaj15

iTrader: (3)

How is it driving on the street with the power glide? Do you think it would make your car faster if you had more gears?

1986Z28OWNER

iTrader: (1)

Doubt it, Personally it doesn't bother me one bit, the car makes good power even out of boost so its very driveable, and for small tire racing I like the lower first gear of the powerglide.

yaj15

iTrader: (3)

That's true. That higher 1st gear in the powerglide helps with traction. Ha at your power level you could burn rubber down the entire track.

1986Z28OWNER

iTrader: (1)

Well, It was a interesting weekend to say the least, Worked until 5am Friday night to get the new brakes and spindles installed. Rand into a bunch of small issues, old bump steer sleeves weren’t long enough, so I had a friend at a local machine shop whip up some custom ones for me.




Drove the car to the race track Saturday AM, with the intentions of running the local x275 class. First round qualifier I put a known tuneup in the car (same one I went 5.44 on) and knew that since that prep was killer and it had brand new tires on it, that the car should hook without issues. And it did exactly that… Left the starting line with the front tires approx. 1 foot in the air, and then the power started coming in and it went on the bumper. Went 1.31 to the 60’ on the back tire. Rode it out way past the 330’ mark and it wasn’t coming down. I pedaled it slightly (went from 100% TPS to 82% tps) and the car came crashing down hard. Pushed the steering rack up hard, broke the rack mounts and cracked the transmission pan. Other then that, there does not seem to be much other damage.

Somehow, no one got any photos or videos on it on the bumper, which is disappointing, but I did get this wicked shot of it, just before the power came in. lol

Jay_rich

iTrader: (4)

God this car is awesome. Pretty well leaves you and Orr that drive their 8 second cars to the track!

Jay

TurboedTPI

Awesome car man! I read thru your complete build thread today. This is seriously an amazing build. Great job! Man times have changed. I remember driving my 10 sec car to the track 7-8years ago thinking I was a badass. haha. I suck now.

Orr89RocZ

iTrader: (20)

Somebody's closerr lol

1986Z28OWNER

iTrader: (1)

Hahah. Maybe we'll have to have a little wager on who makes it there first.

TurboedTPI

You two have awesome machines either way! haha

Orr89RocZ

iTrader: (20)

His top end is ridiculous. I'm a tenth better and 3-4 mph more in the 1/8 but not quite there on mph by the stripe.

zacharyhorn

iTrader: (1)

Good Lord! Nice Car!

boosted chicken

Beautiful car both u and orr. Im currently in the car process of switching my prochager for a s480. Thanx for the motivation.

rb85TA

I'm guessing that you are to busy to address anyone's questions. .... thanks anyway.

Badass355ciz28

iTrader: (17)

very nice build. I do like how the piping is run as well. Where do your exhaust exits come out? the rear of the car?

Im only asking because I am debating where I want to put mine for my twin turbo build.

Orr89RocZ

iTrader: (20)

Racecraft website says not intended for street or road race use

1986Z28OWNER

iTrader: (1)

Engine is out and a bunch of winter upgrades are happening.

Some of these include:
- Bigger 66mm wastegates
- Dart little M block
- New crank, rods and pistons
- Motor plates
- relcoating a bunch of things and cleaning up the engine bay
- Powdercoating and cleaning up some of the charge piping
- Holley touchscreen to replace all the gauges
- Magnafuel Pro outlaw 1000 mechanical fuel pump with waterman cable at the back of the car
- 35 spline axles and new MW spool
- Narrowing rear end 1" per side and switching to big ford housing ends
- Aerospace rear brakes
- Double beadlock champion 15x10 wheels
- New K-member with the rack moved up and forward ( Old k-member is bent from the wheelie)
- Wheelie skis
- Belly pan
- Add another scavenge stage to dry sump
- A bunch of weight reduction (goal is 3400-3450lb race weight)
- Possibly a cage upgrade to a 25.5 7.50 cert
- Holley dominator ECU to log a bunch of additional things in the car each pass ( DS speed, trans line PSi, convertor charge PSI, water PSI, trans temp, back pressure psi, oil temp)
- 1 piece fiberglass front bumper that is fastened with DZUS fasteners for quick install/removal ( makes loading on a trailer easier or fixing intercooler couplers that blow off etc...









Pulled the engine apart...

Bent all 8 Callies Compstar I beam rods. Cant say I am surprised. I pushed these way past the advertised power rating.



Bought a set of callies Ultra H beam rods to replace them



New dominator ECU...


Used set of Precision turbo 66mm wastegates from local Pro mod racer Jim Bell



New magnafuel Pro outlaw 100 mechanical pump.

Orr89RocZ

iTrader: (20)

Can i have your old block for back up? Haha curious how my bottom is looking

1986Z28OWNER

iTrader: (1)

Front motor plate and mid plate arrived, got a plastic dummy block and hope to get them mocked into the car once I am finished with the fire wall.



Removed everything from the firewall, along with the old filler panels. Going to weld up any remaining holes in the firewall, then bodywork it smooth. First though, I need to strip all the dynamat from the inside of the fire wall. All the remaining sound deadener inside the car is getting removed in an attempt to get some more weight out of the car.



Gutted all the old wiring from under the dash, once the firewall is done, I will mount the new ECU, Leash Electronics relay board, Boost controller and billet Map sensor for boost controller. Then I will start to re-wire the car. Hoping to have this done and have the car ready for the engine again for the end of January.

noboostnogo

iTrader: (4)

i like how you did the tube front end

1986Z28OWNER

iTrader: (1)

Just wanted to thank everyone for the kind words and encouragement. Since I won COTM this year, I am now entered for Car of the Year aswell! Make sure everyone goes and casts their vote for their favorite car!

https://www.thirdgen.org/forums/auto...-car-year.html

rb85TA

Yeah, I can see it being Car of The Year!