I got a single 50mm Tial on mine. Works well.

For twins, most can get away with 38mm standard gates. I got JGS 40mm's.

 

thanks. ya i was just reading over on ls1 tech and came across some threads that said the same thing. i'm doing more reading then i am working on my car with this build lol

 

hey guys what size piping do i need for my set up.... meaning from the turbo to the intercooler? from the intercooler i was going to use 3 inch. but can i get away with 2.5 for the other section?

 

yeah 2.5" from each turbo to intercooler and 3" from intercooler to intake is more than enough. You can do bigger but it may have abit more "lag" to it since the volume is larger. Time to fill it up to pressure is a tad big longer.

I myself am debating on going larger from intercooler to TB. I was gonna try 3.5-4" instead of 3 but I've seen alot of guys move fast with a single 3" charge pipe.

 

You can match the size of the compressor outlet. You can go bigger here but no real need to. 3" pipe out of the IC to the TB would be fine.

I wouldn't worry about lag. It is more of a turbo sizing issue. For example, I have a twin setup with 2.5" pipes out of the compressors into a 24" x 12" x 4.5" giant intercooler. Out of the intercooler is 3" pipe to the TB. You would think all the big pipe & big intercooler would have lag. It is on a stock 305ci that spools instantly and starts to make boost at 1700 RPM. The nice thing about smaller pipe is that it is easier and cheaper. The bad part is it is not as upgradeable.

I like this build. You are basically building exactly what I wanted to build for my car. I picked up a fresh 355ci 4-bolt, vortec heads, 9 to 1 compression engine for $350.......but I still question if I should put it in this spring or do the JY 5.3 liter. Are you putting rod bolts in that 5.3 or leaving it stock?

 

will these work? i have them in my ebay cart right now waiting to hit confirm on the purchase
http://www.ebay.com/itm/140612588131...84.m1423.l2649
http://cgi.ebay.com/ws/eBayISAPI.dll...m=260955174036

 

have you looked around CX racing's website? they are pretty much the same price as their stuff on ebay and you really get way more options

 

i'll check it, thanks for the tip.

 

ok check cx racing web site and the same kit was like $40 higher same with that intercooler. so i bought the ebay stuff last night.

 

new parts are fun intercooler and piping. i also have two extra intercoolers if anyone needs one. they are for single in and out. one is 12hx27lx3w and the other is 7hx27lx3.. just throwing them out there before i put them on craigslist and ebay.

now for the new parts for me

 

not yours, its your son's now. he saw it first, lol

TODDLERS RULES OF POSSESION
1. If I like it, it's mine.

2. If it's in my hand, it's mine.
3. If I can take it from you, it's mine.
4. If I had it a little while ago, it's mine.
5. If it's mine, it must NEVER appear to be yours in anyway.
6. If I'm doing or building something, all the pieces are mine.
7. If it looks just like mine, it is mine.
8. If I saw it first, it's mine.
9. If you are playing with something and you put it down, it automatically becomes mine. 10. If it's broken, it's yours.

 

ya I've learned this lol he even took my wife.... little brat lolol

 

how much u asking for the intercoolers, what brand are they got pics?

 

prabably $100 for both plus shipping. i think i paid $68 for the silver one and the black one came with the piping kit. i can see me ever using them so they will just sit in my garage ..... i hate having things sit in my garage

 

hey guys any suggestions on cams? i want as good as i can get for a street car. i will be having my heads worked so if there is a cam that needs x lift and x flow to get the best cam for this set up then throw it out there and i will have the heads worked for it.

thanks

 

so i talked to comp cams today and they want to set me up with a custom grind cam. the man seemed very knowledgeable(works for a cam company so probably would lol) and he basically said this would be a great street cam and still produce some nice power. i told him what i was doing for the build and that i wanted as much as i could get out of it and this is what he came up with.

222-224 duration
115 lobe separation
.600 lift

ok i know nothing about cams or what that stuff even means but does anyone have any input on this spec before i call them back and order this cam?

 

I've tried to keep this build going in the "members camaros" board since I'm doing a lot more then just the motor but this part pertains to the motor so thought I'd update this thread. if anyone is interested in seeing what else i've done to the car you can check it out https://www.thirdgen.org/forums/memb...omplete-2.html

more new parts acquired i know eventually I'm going to have to start putting these parts on the car lol now that the radiator is here i can cut out the front, put the motor in and start mocking it all up.

i wanted a shorter rad so my piping would have plenty of room to come over the top with out doing a cowl hood. i also wanted a 3 core radiator to help with cooling so this one for 130$ through northern i thought was a good deal and went with it. its' 16x31x3. between the rad, tans cooler, and oil cooler I'm really hoping to keep heat down. anyway hopefully more to come this weekend.

 

hey guys my header flanges came in today so i jumped on summit and ordered 1 7/8 header kits. i know its after the fact since i ordered them but does anyone have an opinion on the size of these for my set up.... to big to small etc. ?

i figured making my own will give me the freedom to locate the turbos where i want them verses the truck headers or premade headers. with moving the rad a little forward and down it will give me a little more room the turbos.

 

well i had some time out in the garage this past weekend. any opinions on the fans in the pics for mounting? i'm thinking about boxing them in beneath the surface they are resting on in the pictures i think it would make it a little cleaner. so they are flush with the battery tray surface. that would also give me more room for the turbo piping going to the intercooler.

 

i spent most of the day in the garage today. was able to get a some stuff. i welded up the frame for the radiator/intercooler well some of it. this is just the start i still need to do the brackets and supports on the car and i have a few more things to add to the rad/cooler frame as well but you can get an idea of where i'm going with it. the intercooler will mount in front of the rad against the two vertical steel rods you see in the front.



in the pics the set up is higher then i'm going to have it i plan on lowering it about 2 more inches so i can have my intercooler exit come up over the rad to the intake.

 

Fab up some brackets to bolt it in/out & engine pulling/installation would become way easier!

 

It's coming along great, excellent innovation...

Agreed...

 

thanks guys, ya the bracket idea sounds like a winner as well thank you for the tip.

 

well the radiator stuff is all done. its all removable. i still still need to clean up the welds drill/tap some holes here and there but its done.

next will be onto the fan mounts for the trans and oil coolers. its coming along slow but i'm happy with how its turning out.



and what fun would a project car be with out the help of a top mechanic and consultant at your side

 

one word of advice for ya.

were u cut and made that new rad mount, u need to put a much heavier piece of steel in there for support on the front frame rails so they dont flex, not to mention if god forbid somone hits u dead on in the front or clips the nose of the car

 

thanks for the input. well that frame i put in there is a lot sturdier then the piece i pulled out. i was pretty shocked how flimsy it was. i am leaving the bumper support in as well and adding a wounder bar. if theirs room after everything is installed i can always add more in front of the intercooler/rad frame if needed.

thanks again for the input always appreciated and respected.

 

ok thats not bad at all then, the wonderbar will deff stiffen up the front a bit but it will still be able to flex the rails up and down vertically instead of side to side.

welding an x brace into that fram u made should stop the vertical movement and really stiffen up the front end with the wonder bar


btw how much room did u gain by doing this ive been toying with doing this on my tt iroc to move the radiator and intercooler out further

 

Xbrace.......Great idea! Thank you!

 

I would do this if I wasnt lazy and already have a rad... I got a good foot of room to move stuff forward and it would have been nice to do so. I had an idea for a twin layout that I wanted to run but couldnt do it without relocating stuff in the front so i settled on where they are at now.

 

sorry i forgot to answer your question. it looks like about 2 inches. with fitting the turbos where i want them ...... i think this was worth to me.

well i just didnt want the engine bay to look so crammed you couldnt see anything. plus i want to be able to show it off since i plan on smothing the bay out as much as i can.

 

well i got the motor in(just for mock up before i paint engine bay and rebuild the motor) and to be honest... it sucked lol when pull this thing back out and reinstall I'm dropping the k-member. that was just to tight of a fit. probably didn't help that left the truck oil pan on either. anyway its in and i can start making my headers and laying things out. also added an x brace to that radiator/intercooler support. the support next to the stock box they had in there is night and day for strength and sturdiness. i'll try not to go picture happy but just to give you an idea how things look right now.





i gotta admit I'm really happy with the extra room this has given me by moving the rad forward a little.

 

anybody hear anything good about stroking a 5.3? would i have more headaches then its worth?

 

I don't think that I would stroke the 5.3, the small bore will be the limitation before the stroke. I would bore it over to use LS1 pistons (sometimes good forged ones can be found cheaper).

or just leave it alone, there are guys making a TON of rwhp with a 5.3L and a decent turbo

 

good points, turbo should make this fast enough so we'll see.

 

I agree, no sense it stroking it. Just put in good rod bolts and rev alittle higher and run abit more boost if you need more power.

 

ya i hear ya guys. well i am sending the heads out to get all the goodies done to them and i'm going to put new rings bearings etc in. basically freshen the motor up. i just want to make sure this car flies when i'm done lol

 

It should move out. Depends on your definition of "fly" but I've seen way too many of these junkyard takeout truck motors make stupid power and live. You dont really need alot of special stuff. My one friends 260K mile 6.0 van motor ran a good 2 seasons on a big cam + nitrous shot ( mid 10 sec race car) and NOW he decides to turbo it. Simple schedule 40 log pipes into an S400 turbo... 8psi with ls6 cam and 243 heads and factory truck intake. 576whp thru 9" rear and 4L80E trans!

Another friend is already over 700whp with a twin setup on a 5.3 that has stock heads and a mild 230 deg cam I believe. Just insane what these things can do. His motor is in a 4600 truck thats been 11 flat at 130mph

 

well by fly.... I'm hoping for a mid 10sec street car. why, i don't know lol Ive never even been in a car that does better then 12 seconds. i just want a beast.

 

500 rwhp will do it and thats easy with a basically stock internal 5.3. Do something like a ls6 cam if you want and 243 heads/317 heads depending on the compression you want to run and 10 psi should get you there without much headache Thats as budget as it gets

If you freshen it up with new bearings, abit wider ring gaps and good rod bolts it should live forever.

 

really!!! well i already planned on rebuilding the motor, having the heads sent out for a better valve job and performance valves,springs and better cam. the guy i have doing my wiring said he was going to tune me for around 14psi. so that's awesome to hear orr. i know its probably more then i need to do but if i want to get crazier later down the road the motor will be ready for it. i still have a ways to go but I'm in no hurry and i really want this done right.

thanks for the input.

 

Yep, my buddy's truck is cam only with twin turbos and ran mid 11's at like 124mph on 9psi I think. 4600 lbs. It was in the 575whp range on 9 psi. 93 oct and some meth injection to keep things cool. Figure more mild cam, you'll need abit more psi to match that but still 9 psi and mild cam should be nearer 500whp. Like I said, ls6 cammed 6.0 at 260K miles made 576 on 8 psi 5.3 will be down 50hp or so

 

well i already talked to comp cams about a month ago and they speced out a cam for me. i told them i wanted as much as i could get while keeping it street friendly. i dont remember the numbers (written down in the garage somewhere) but the guy said it was going to really let my set up breath. i think something like .6 lift with 114 something. from what ive been reading over the last couple of months i think it's going to turn out pretty nice.

 

now that looks good symmetrical, parallel and perpendicular.. sorry guys I'm a programmer in the metrology field so that stuff means a lot to me lol

now to make the headers... i was kinda holding the turbos in place today after i got the intercooler and everything bolted in.. doesn't look as easy as i thought it was going to be to place those turbos.. in suggestions ?

 

i suppose you are going to wrap that pipe that runs above either the oil or trans cooler correct.

 

ya I'm going to do something.. not sure what yet. i could do a heat shield or something along those lines... we'll see. i haven't decided on weather I'm going to push or pull the air on those coolers, I'm still thinking about maybe angling them back so the air would blow toward the firewall if that makes sense which would keep the air off the intercooler piping.

now that i have the piping run I'm racking my brain on how i want to position these turbos. i've been looking for some pics to get some idea's but I'm not coming up with much.

 

get everything in the car that has to be in a specific spot,i.e accesorys and other things that cant be relocated

then figure out were to put the turbos, worry about the intercooler plumbing last its much easier to move the charge pipes then it is most other things under the hood

 

thanks project, good point.... a little common sense and i should have been able to think that one out lol hey i'm learning thanks i think i'll switch directions and start on the accessories.

 

haha its all good man, sometimes i lose my common sense myself and somone else has to point it out

 

ya i have "sometimers"

 

yeah definately have the rest of the "fixed" postion items in place and then move the turbo around to visualize the layout. I also used a bunch of towels/shop gloves/wood blocks etc to build up a "nest" to sit turbo in, so I can have turbo in place and keep my hands free to play with pieces of pipe to simulate hotside routing. It really helped on my current build.

Cold side was the least of my concerns and still has been the last thing I did. I worked on oil drain system with scavenge pump before I was worried about cold side. On the last build it was the same way, I just knew intercooler would be up front in the nose and piping would come in through battery boxes... how it got there was yet to be determined.