Thinking about going FI... Any tips?
Sorry for all the questions, I'm just now starting to get interested in FI, and I'm sure I could find these answers if I used the search, but I'm at work, and the search function doesn't work on my computer for some reason.
To quickly hit a couple:
1. A stock LS1 can take 5-6 psi without much risk. It can take more than that, but it gets exponentially more dangerous as you go. That's really a generic statement though, as the type of boost matters; methanol injection? turbo? centrifugal blower? whipple? maggie? Each type has it's own limits, do some research.
2. 4L60e. Stock? Not a f'n prayer. You can build one to take a lot of abuse though. Get out your checkbook.
You'll need it out for the F/I build anyway.3. 10 bolt. Some use them, a roots or whipple will kill it more quickly than a turbo. Either way it's on borrowed time.
4. Automatics are generally better with a turbo vs. a stick (drivability/performance wise, power to the ground will still be lower). With blowers it's less important, though you'll find a blower pretty hard on a stick, generally. Power loss percentages with F/I are the same as without. You can make all the power you want with F/I, all depends on how thick your wallet is, just like anything else.
No offense, but by the sound of your questions, I'd recommend contacting a shop about this. Also, read the "true cost of forced induction" bit in the stickies. Going from a nearly stock car to a 600 HP F/I car costs cubic dollars, if you can't handle all your own work.
Your auto will likely not last long but the 10 bolt will if you aren't trying to go to the track on sticky tires.
Procharger gets my vote due to easy of install and they make great power.
Also yes be prepared to spend some money. And more than you think.
Last edited by 355TurboLT1; Apr 14, 2010 at 01:12 PM.
Few companies coming out with new kits single and dual see Modular turbo thread.
Some used kits would be ok as well like APS used kit for maybe 4000 to 5000 grand tops. Might need to replace turbos in the aps kit thats why good to buy it a bit cheaper.
10 bolts will stand up find if you dont' try to run really stick tires, street tires you won't have any traction anyway ,nittos are bit stickier but should still save the 10 bolt. Obviously auto cars are easier on rear ends.
Your cam you didn't list full specs. Most any cam can work ok for FI but of course you can optimize. But opinions really vary on what is best.no split,reverse split, normal split..and then what lsa...lift generally stay under 600 for FI and make sure you have good valve springs upgrade stock ones for sure.
You need upgradeds to fuel system , at least like a racetronix single pump and 42 to 60 injectors. You can run stock rails and stock reg for awhile.
As said need to spend money on the 4l60 or swap in a stock 4l80 which is plenty strong.
And pretty easy swap really.
Also you will need few other things ,guages ,scantools, wideband is handy. tuning. Alc injection is a good thing..
But it can be done on stock or nearly stock car. Local guy has run his sts turbo for couple years nearly bone stock,fuel pump ,injectors thats about it.
As said stick to lower boost levels under 8 for sure if it was me. You can swap on 317 heads for pretty cheap, lower compression and then would maybe go to 10psi or so. Its hard to say exactly as turbo size and blower size will make different power at same psi.
Stock pistons are the biggest weak link, fragile ringlands and will shatter pretty easily if you get detonation. Rod bolts think are next weak link. Cranks are strong and rods not bad.
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Actually more than 7k because I paid 800 for a clutch lol.
You need racetronix pump and 60 pound injectors ideally these are pretty cheap. You can get tuning done for likely around 300 bucks.
You don't need to change stock rear end right away especially on an auto,just don't run super sticky tires stick to street tires or maybe nittos.
You can run totally stock engine but say some better valve springs like 918 comps or similar are good idea.
You don't need alc injection right away you can get by on pump premium and just keep boost 5 to 7 or so.
You can get cheap boost guage from like autometer that works fine. You don't need boost controller or you can get manual one for 100 bucks or less. You can get wideband for a couple hundred these days or let tuner use his maybe.
You could get think one of several used aps kits on board lately??? for 4000 to maybe 5000 be pretty good deal. You do need bmr kmember for aps kit they made me and few other guys a custom bmr/aps kmember for even better clearances.
You would need to buy like a ypipe if you want to stay with stock catback setup instead of true duals.I got hooker ceramic coated one and it fit great.
You can sometimes get a used procharger as well or used sts kit. If you get a used sts kit try to get a newer redesign they are much better in several key areas over the old kit.I would stay away from ebay kits, knock off gates and turbos and blow offs and if you try to do your own kit without fab skills you likely will get very frustrated.
Sts, procharger,aps for cheaper..all good kits. Or you can get modulars new single kit for now or maybe kit from KYTP both have been around for awhile. TTI also has been around but not sure their prices or much about them.Mighty mouse think runs tti single kit.
For trans upgrade could cost 2000 to 3000 or so. As said though you could run stock 4l80 or if you can live without overdrive for now you can run stock or near stock turbo 350 or turbo 400 trans as well.
317 heads are pretty cheap can help drop your compression to run a bit more boost on stock motor. Stock cams will work ok for now.
I wouldn't get totally scared off if had 10k or so to spend. But if you want like some guys a big power build like 800 or 1000rwhp or more then it all starts to cost big money.
To run much over 600rwhp you need serious fuel system, dual pumps,bigger lines, rails,adustable reg. To run m6 car with big power need serious clutch, trans upgrades.If auto you need turbo 350,400,4l80 or upgraded 4l60.
To run track with big power and race tires like et street radials you need a new stronger rearend and stronger driveshaft.
Stock ls1 engine can take a lot of power if you put in better rod bolts and or rods and better forged pistons. Crank as said is strong.
For instance here are a few deals I have scored:
ATI balancer for A/C equipped cars $225 shipped (new $400+)
Standard Procharger J-bracket (minus hardware & tensioner) $60 shipped (hardware kit is $60 & 8-rib tensioner is $90, still cheaper than buying a new complete j-bracket assembly though)
7.65" crank 8-rib pulley for the balancer $60 shipped
3.4" headunit pulley 8-rib $50 shipped
I'd suggest if your gonna go the FI route you spend some serious time in this section reading every thread relevant to what you wanna do. Thats what I have been doin for almost a year now & its paying off big time. I know a TON more now than I did & know exactly what direction I need to go & which parts I'm lookin for to build it on the tightest budget I can but still be built right. It can be done if you have patience & know what you need. You will save a ton if you have people who can help out fabrication wise as well or if you can do things yourself.
there are ways to make the 4l60e last
do not fit slicks or very big tires ( i ran my stock 245's) the car did not hook for ****, but was fun to drive
also i fitted a huge tranny cooler and a transmission temperature gauge and changed my transmission oil with synthetic, never saw temperatures above 150, even at the track
increase the tranny line pressure so the clutches do not burn up, but it will shift very hard
this season i will be upping the power even more, and i will see when the 4l60e blows up.
I dont know much about autos but the 10 bolt should hold up if you stay on street tires. Its been my finding that as long as you are spinning they will last..If you hook break out your check book!!!!lol There is a guy out here in the bay area that pushing 10-12lbs on a stock block,m6 10 bollt..going on six months and he drives it hard!!!It can be done but more have failed than succeeded...Good luck and do a lot of research..
The stock LS1 can hold a good bit of power if its tuned right. Most guys agree that some where around 500-550 is about the limit for the stock bottom end. Boost will very but i would say 8-10 is the limit with a spot on tune and maybe meth as a safty net.
I would start with a good all around set up that will allow you grow over time. When i first started i said i would never out grow my 60 kit but just one year latter i am upgrading to a T76. If you go turbo i would say a single 70mm is about as small as you want to go even on a stock LS1.
FI is expensive on our cars there are no two ways about it. If you are trying to go cheap your work on a budget i would suggest going with N2O since it offers a lot more bang for the buck IMOP.






