Originally Posted by hometeam:
So I have been kicking it around, and now am about to pull the trigger.
Since my TA has been through so many phases, and at this point is built to the hilt, save for the power level, I am going to go turbo. Ill be doing it the LS guy way, which means cheap. on3 turbo kit, with a 7875 turbo. I expect, depending on which way I go, and how ballsy we want to get, to make 600-700rwhp, which should be plenty safe with the current non-forged motor I have. of course, the built 4l80e and the 9inch wont think twice abou handling that power, so no issues there.
I have a couple of choices -
1. Slap the turbo on as my car sits, with meth. Meaning keep my 11.5:1 compression (yikes!) and my NA specced cam and go.. it wont be the absolute max effort, but will be the easiest, and leave me with more down low torque, at the expense of efficiency and top end,since the cam has 12.5 degrees of overlap, which isnt the best for a turbo set up. In this case it would be a must to run e85 or meth because of the compression. It will prob also neve rbe able to be turned up past 12-15psi, but the compression would make up for it, as long as we are safe in the tune.
2. sell my NA heads, and go to a stock 317 casting head, lowering compression to 9.8:1, and since the heads are coming off, sell my NA cam and go with a turbo spec cam. I would pick up more on the big end at the cost of throttle response and street manners. This would be more of a traditional build, and would cost me a little less since a 317 head is about a hundred bucks and I can sell my bare patriot head and NA cam for about 1200 bucks, though I would also have to buy a 400 dollar camshaft. This would also mean we have to pull the motor and its more work.
I cant make up my mindddd, id be curious to hear the opinions of SAUTO, Marcellus and others.
I would absolutely hate to be tied to E85, its great for a drag car but if you plan to drive it then that sucks.
I say go lower compression and change the cam because that actually makes it more driveable over the long run IMO.
You can have a street tune and a race tune to make it even more streetable if you want. [Reply]
Originally Posted by hometeam:
So I have been kicking it around, and now am about to pull the trigger.
Since my TA has been through so many phases, and at this point is built to the hilt, save for the power level, I am going to go turbo. Ill be doing it the LS guy way, which means cheap. on3 turbo kit, with a 7875 turbo. I expect, depending on which way I go, and how ballsy we want to get, to make 600-700rwhp, which should be plenty safe with the current non-forged motor I have. of course, the built 4l80e and the 9inch wont think twice abou handling that power, so no issues there.
I have a couple of choices -
1. Slap the turbo on as my car sits, with meth. Meaning keep my 11.5:1 compression (yikes!) and my NA specced cam and go.. it wont be the absolute max effort, but will be the easiest, and leave me with more down low torque, at the expense of efficiency and top end,since the cam has 12.5 degrees of overlap, which isnt the best for a turbo set up. In this case it would be a must to run e85 or meth because of the compression. It will prob also neve rbe able to be turned up past 12-15psi, but the compression would make up for it, as long as we are safe in the tune.
2. sell my NA heads, and go to a stock 317 casting head, lowering compression to 9.8:1, and since the heads are coming off, sell my NA cam and go with a turbo spec cam. I would pick up more on the big end at the cost of throttle response and street manners. This would be more of a traditional build, and would cost me a little less since a 317 head is about a hundred bucks and I can sell my bare patriot head and NA cam for about 1200 bucks, though I would also have to buy a 400 dollar camshaft. This would also mean we have to pull the motor and its more work.
I cant make up my mindddd, id be curious to hear the opinions of SAUTO, Marcellus and others.
The cam plays a big role in the ability to run compression and boost. If you’re not looking for big boost I’d run as is, possibly with a cam swap. [Reply]
Went for a long drive today. Weather is nice and the car is running very nicely.
Need to find someone to machine the slots my aluminum hood hinges so I can slide the hood back about another 3/8", its bottomed out on the back of the hinge. Gap is driving me nuts.Thats why the gap on the front of the hood bar looks off on the corner.
love that simple look but stomping ass preformance. [Reply]
Originally Posted by Marcellus:
Thanks man, that was the whole concept. Its fun to build a car you like and its cool when others like the same concept.
I love those wheels. I love black simple wheels with white lettering the best. Car guys car. [Reply]
So ive decided. Just gonna take the hard way out, do it right, and lower my compression and run boost.. this car made 586 foot pounds of torque the way it sits.. i figure ill llose a hundred pounds or sirght off the line, but in the end, its safer to turbo on low compression, and will yield better results.
STAY TUNED BOYS. Looking for 650+whp on pump gas on a REAL stingy dyno.
Originally Posted by Marcellus:
I would absolutely hate to be tied to E85, its great for a drag car but if you plan to drive it then that sucks.
I say go lower compression and change the cam because that actually makes it more driveable over the long run IMO.
You can have a street tune and a race tune to make it even more streetable if you want.
yes this is what I will do.
I have been pure e85 in my old subie, and it was fine, but i had to literally plan any trip I made becuase of where i could fuel up.
I also run an e30 tune in my Focus st, an i get e30 by mixing 91 and e85. Its still a pain in the ass in the same way, so **** it, low compression high boost it is. [Reply]
Originally Posted by hometeam:
So ive decided. Just gonna take the hard way out, do it right, and lower my compression and run boost.. this car made 586 foot pounds of torque the way it sits.. i figure ill llose a hundred pounds or sirght off the line, but in the end, its safer to turbo on low compression, and will yield better results.
STAY TUNED BOYS. Looking for 650+whp on pump gas on a REAL stingy dyno.
And yes, its still a driver.
Good choice. My car is sitting at around 9:1 right now for the exact same reasons. Should get boost next year (what I said last year).
Fuck E85 and the pain that comes with it unless its a drag car. [Reply]
Originally Posted by hometeam:
yes this is what I will do.
I have been pure e85 in my old subie, and it was fine, but i had to literally plan any trip I made becuase of where i could fuel up.
I also run an e30 tune in my Focus st, an i get e30 by mixing 91 and e85. Its still a pain in the ass in the same way, so **** it, low compression high boost it is.
Don’t go too low, the LSs’ like compression. I went too low on my first 427 and it was a pig on the street. [Reply]
Originally Posted by SAUTO:
We are in the process of cam swapping an 01 2wd reg cab short bed 5.3
Pulled the cam this afternoon and the front cam bearing is brass over halfway around on the pressure side.
I was shocked. Truck only has 61k on it and it's hard the oil changed 24 times with Mobil 1 synthetic. Older guy that owns it bought it new.
Any thoughts?
Sounds like too much synthetic too often to me. Imagine washing your hair 5x a day for 2 months. Detergent at too high a level is always bad.
Edit: And I am literally just saying what comes to mind. Thats a lot of oil changes at short interval for no reason for an LS motor designed to go 8,000+ without an oil change under normal conditions. [Reply]
