I ahve had a camed 5.3, large cam 418, both were sprayed and both were annoying as hell to drive in traffic. Im putting a turbo cammed 6L in my truck with an sts kit then putting the 418 back in with the CR dropped. Filling the bottle, surging, retuning with even the smallest weather change, large stall, sound of a cammed motor and jerking wehn you got a headache, all get old, so Im going FI next weekend, and Ill have 300 more hp under my foot compared to my N/A setups.

 

first build up a strong 420 cid motor, then put on a power adder, make insane horse power.

 

What would a turbo cam do vs a non turbo cam?

 

Keeps the overlap to a minimum to prevent blowing boost out the exhaust.

Without building a new engine, what would it cost to go FI?

Single turbo system, low comp ported heads to run about 10psi, intercooled, with a decent blower cam and ported TB?

 

Ultra-Z Incon was the company that screwed people out of kits when they went bankrupt due to bad managment. So unless you can find a used kit floating around which I think there were only about 115 kits that were completed in total it isn't going to happen. Read the forced induction forum and make a post about which turbo kit to buy, see what responses you get and compare the companies. Go to there websites and call and ask questions and see who you feel comfortable dealing with. In terms of sending your car to a shop for the install most of the turbo kit manufacturers either do installs themselves or have there vendors do it. Like MTI carries the STS turbo kits so you can just send your car to MTI and they can install an STS kit there. For the Mcleod twin disk check the group purchase forum. If there isn't a group purchase going on now then make new post to see if a sponsor wouldn't mind doing one. A lot of the times once someone brings a group purchase suggestion up a few other members post requesting one as well and then a sponsor just goes with it.

 

BlackHawk T/A Without building a new engine, what would it cost to go FI?

First you have the cost of the turbo kit around 5,000 to 6,500. If you need additional fuel system things like pumps or injectors you'll have to add that as well. Low comp ported heads range from 1,500-3,000 depnding on manufacturer, flow, and options. Intercoolers come with most turbo kits already. A cam is gonna run around 500. The ported throttle body is not needed and you won't see any real significant gain from it anyways.

 

no question about it, forced induction is the way to go. Want more power just add boost?

 

Sounds like a plan I will go start another subject on the forced induction forum

 

I would kill for T76 setup!!

 

As far as my motor is concerned do I forge it or buy a new one? I was thinking of 370c.i. or a 402, what do I do Tho I forgot to mention if I have to run drag radials on back to hook up on the street than so be it, any ricer that pulls up next to me might think twice about racing me seeing drag radials on back

 

I have a guy that can do the turbo setup for about 1/2 that. The heads, cam, fuel system and everything else would all be extra though.

 

hotside / coldside , turbo , intercooler , wastegate , blowoffvalve , complete minus a tune and fuel system for $2,500-$3,000 Your talkin quality parts ehh

 

To run a 400+ ci motor on the street with a turbo, you'll need a bigger turbo than a T76 (PT-88 would be nice ), or backpressure will become too much of an issue. Going to the bigger bore 370 is good, but a larger bore is more prone to detonation. With a good tune this is pretty nice though as you unshroud the valves. You would be fine with a forged 347 stock crank, and T76 for the street if you chose that route. It WILL make great power. Turbo systems on our F-Bodies though TYPICALLY lose the AC and/or factory battery location so be prepared to lose (or relocate) Air Conditioning. Being a 6-speed you might like a D1-SC package from ATI, but it won't QUITE make the same power at the same boost level.

 

Ultra-Z Forge the motor you have. Don't get caught up in all the big cube setups, that's only needed if you're shooting for more than 800rwhp. Trust me until you ride in a car with only 600rwhp you won't believe how fast it is and you'll think these guys with 800+rwhp are nuts. I have a stock displacemnet forged motor (346) and with the car at 18lbs of boost will make 800rwhp. Most of the current kits are single kits I believe for cutting cost of the kit and the need for removing/relocating things like ac. A forged 346 should be able to spool a single 76mm turbo by 3,000-3,500rpm(depending on the ar on the exhaust housing). When you get you're heads ported or go aftermarket like AFR 225's you can run stock style cams( as in not solid rollers) to 7,000rpm if you really wan't to. I rev mine to 6,500rpm which is plenty. In between shifts my six speed never goes below 4,000rpm and I'm on full boost in the next gear with zero lag. The car actually revs so fast when getting into 2nd gear that literally by the time my foot hits the floor and I hit full boost the car has already wound through second gear(50-80mph). Also remember a small displacement (as in stock) motor is more fun. Since the motor off boost makes less power than a large motor off boost, when the turbos hit they hit even harder. Lets say two cars one with a forged 346 and one with a forged 402 both make 800rwhp on boost, but the 346 off boost would make 350rwhp and the forged 402 would make 450rwhp the difference is the fact that when boost hits the 346 it's supplying a 450rwhp burst but the 402 is only supplying a 350rwhp boost to get the full 800rwhp(the small motor hits harder,if that makes sense to you). Shortened version use you're stock block and crank and get good high quality forged pistons and rods( i'm using the JE pistons and Lunati rods from lingenfelter, which they use in there forged 346 boosted twin turbo vetttes). Heads use AFR 225's and an LS6 intake. There is no need for fast90/90 setups especially since the turbos are slamming air into the motor. Spend the money somewhere else like on the pistons, rods, heads, or a higher quality turbo kit.

 

Chris ws6- You have been more than helpful in this matter, so using my stock block and crankshaft getting some AFR 225's and some new pistons, rods with a couple T67's or something I could make around 800rwhp?! I already have the ls-6 intake so that save me a few bucks right there. I will have to inquire with lingenfelter about some rods and pistons...anything else that I should be aware of?

 

Ultra Z- Oh yeah, no problem. Harlan went 10.00 at 142 with the incon kit with just that a stock crank and forged pistons and rods. Then he wanted a crazy powerfull turbo car had a custom turbo kit made and went 8.?? at 173 with the stock crank. After that pass he decided to replace it because he new that was pushing it preety far. Otherwise for you're 700-800rwhp goal than a stock crank is fine.

Only other thing is a fuel system. Mine is huge. Mine is 2 high pressure walbro 255's, a one inch feed line, speed inc fuel rails, and I'm using my stock feed line as my return line( you can't do that since you're car is not a 98). I would suggest calling speed inc and getting one from them they know what you'll need.

 

i agree, why spend aton of money on a big cubed motor when you dont need it?
you can make huge power with using the stock block. get the forged piston & rods, use the stock crank. you save alot of money and can still make 700+rwhp and to me & most other people, that is enough for the street. if you want 800+ then do a 408 or whatever.

 

chris's ws6- 10secs at 142?! nice Im not all that much into drag racing but damn thats fast. Are the stock main bearings able to handle this type of HP?

30th TA- Thats a good point, even tho 700rwhp is insane if I were to go over that i'd probably kill myself on the street. And from posting on this forum I think I saved a couple thousand dollars thanks to everyone. When I get this setup done i'll have the sickest car in Minnesota, not to mention i'll have the most bad-*** 4th gen at Car Craft.

 

Is there a certain diameter/length for my pistons and rods?!?! Do i need bigger rocker arms or anything like that? As im looking through Lingenfelters online cataloge im seeing all sorts of "other" things i wonder if I'll need.

 

The thing is, a new forged 347 shortblock isn't much less than an LS2 402.