1987 Iroc..Single 74mm T6 BUILD 383LT1

[jay_rich]

Its a griffen 27.5x19x3 Big mother fucker hahah.

Only issue I have now is i cant drive on the highway it still heats up! I think due to the 3.42 rear and reving at 3500rpm kinda heat soaks everything. And my water pump is 4years old, I may send it in this year for a rebuild.

Jay

[jasoncoupe]

What speed are you at when at 3500rpm?

[jay_rich]

What speed are you at when at 3500rpm?

120kmph My speedo isnt hooked up lol, i am just following my other buddys and other traffic lol. Been lazy!

Newest update...

I ordered a 8point cage
-new shocks
-new trans mount-
-moser 9inch (will be here soon!)
-Spool


Now to decide on a gear....i have a 2.75 year for the 9inch already...or do i just go up to a 3.00 gear? IM running a 26inch tire.

Jay

[TT TA 355]

Core size or total dimension?

[jay_rich]

Griffin Thermal Products 1-25242-X

I think it is total outside diamensions.

Very nice quality rad tho!...alot of the 4th gen guys are running the same rad but only a 2.25 thick version.

Driving around the city for like 3 hours it wont get over 175ish, I made 4 pulls in a row when racing a mustang and only saw like 185-190, then it cooled right down

Just the highway is an issue still....hoping the 3.0 gear in the 9inch will help

Jay

[jasoncoupe]

I'm going to be running and 3.27 gear in my car...A lot of my buddies chose this gear also and they have tried many different combinations.  My 2cents.

[jay_rich]

Well here are some new parts to install

Jay

[denmah]

taking care of that rear right away!

[jay_rich]

yea decided to go to a 9inch before i snap the 10bolt, and the posi on the 10bolt seems to work when it wants to, also i have a bend axle.
So now its 9inch spool 3.00 gear....grab the trans brake and hold on!!!

Jay

[kmo1188]

The way that axle sits in the pictures, can you give me a measurement of how long it is from one axle tube to anouther? JW for my 9inch install.

[86ttTA]

Griffin Thermal Products 1-25242-X

I think it is total outside diamensions.

Very nice quality rad tho!...alot of the 4th gen guys are running the same rad but only a 2.25 thick version.

Driving around the city for like 3 hours it wont get over 175ish, I made 4 pulls in a row when racing a mustang and only saw like 185-190, then it cooled right down

Just the highway is an issue still....hoping the 3.0 gear in the 9inch will help

Jay

do you have a air deflector under the car like the factory did?that might make a difference on the highway as the third gens are bottom feeders for the cooling system

[jay_rich]

I built one but im thinkin maybe its on too much of an angle. I may build another one.

Jay

[vwdave]

I hate you. 





















J/K, my build is very similar.  I have a GT4202 I'm putting into my 89 with a 358, and seeing this build gave me some great ideas on how to gain space.  Namely relocating the radiator and such forward.  That will give me room for the 4" downpipe.

Few questions, sorry if you answered this earlier, but what turbine housing do you have and how is the spool on the 383?  I'm seeking 3500 spool with the 1.05 a/r T6 housing I currently have.

[jay_rich]

I hate you. 

J/K, my build is very similar.  I have a GT4202 I'm putting into my 89 with a 358, and seeing this build gave me some great ideas on how to gain space.  Namely relocating the radiator and such forward.  That will give me room for the 4" downpipe.

Few questions, sorry if you answered this earlier, but what turbine housing do you have and how is the spool on the 383?  I'm seeking 3500 spool with the 1.05 a/r T6 housing I currently have.

haha, I have a T6 flanged .96AR, I see boost at 3800RPM, tad laggy but when it kicks in it pulls so smooth!

Jay

[rockoosi1]

You really have me thinking about snatching this think down off of racingjunk and putting the 6.0L LS that I have sitting on the stand down in there (with a little turbo help ).

Rodney

[jay_rich]

Well I got my tires in today for the front...

Rear-
15x10 Summit Star
275/50 Mickey Thompson ET Radials

Front-
15x4 Summit Star
165/80 Kumho Radials

Jay

[droopy]

nice....looks really good. is the 9" in already? if it is, why arent you at the track yet? 

[jay_rich]

nice....looks really good. is the 9" in already? if it is, why arent you at the track yet? 

Yup its in, i just need to put a v-band clamp on the hot side and im good to go.

Should be running this week MAYBE the track this weekend..

Jay

[blowthruGT]

car looks sick! definately a nice job, youve done alot of work in a short time. keep it up!

[whiteghost]

what shock/spring combo are you going to go with?

[droopy]

hope you got to the track. me and a few buddies have been thrashing on a mustang for a couple days trying to get to the track before the hurricane hits this weekend. they're running till 2am tonite, so hopefully we will make it there for a little testing tonite.

[jay_rich]

Sorry guys been a lazy mofo, I went to go put the hotside back on yesterday...the merge that has the turbo flange, the 2 pipes to the crossover and the wastegate cracked then warped down, so now the crossover hits the accesories. SO i have to build a new one outta thicker steal!....so more delay.

Ive been house shopping so i havnt had much time to work on it either.

Hopefully in the next few weeks ill get her going.

Jay

[jay_rich]

update...i bought my first house.....fixed the hotside on the car, fired it up and the headgaskets are fucked! Shot a bunch of coolant outta the merge. I dunno why, last time I drove the car (month and a half) it was perfect, didnt blow smoke, oil was fine etc.

So the car is done for the year, once i move into my house I will tear the motor down and check it all over.

Jay

[jay_rich]

Here is the vids from before I put the rear end in and put my summit stars on...little did i know i shoulda spent money on head gaskets lol

Jay

http://videos.streetfire.net/video/383-LT1-Turbo-Camaro-Z28_706355.htm

http://videos.streetfire.net/video/383-LT1-Turbo-Camaro-Z28_706357.htm

[droopy]

congrats on getting your house. hope the garage is nice and big.
too bad about the car being done for the year.