NoGo95GT

With the 4.10's, I blow right through the gears and 4th gear is needed to complete the eighth. My trap speed is so low because of the shifting problem I had. 1st gear is good to about 30; 2nd to 59; 3rd to a mid 8X; 4th ?. But I would guess not much more than 120. Aren't yours 3.55's? Also, you are correct in saying that not all turbos have lag, but alot do. I guess that can be said about superchargers too, or at least stock cars that have not been modified. I know my uncle's 2.7T Audi has some turbo lag. Again, all cars are different. To the guy who asked about the Paxton Novi2000. Yes, that is also an excellent blower. In fact, it usually has more capability than the Vortech S-trim, for around the same cost. Plus, they are actually owned by Vortech now. They are great blowers.

smacked1

im either going with the v1 or the v3 but since i can get the v1 brand new for like 1800 since the one im lookin at is discontinued i might go with that

luckythirteen13

what trans do you have again? i have 3.73 gears and a 28" tire. using an online gear calculator with my tire size and gear ratio, my 3rd gear at 6700ish rpm i can hit about 140mph. its been a while since i did the math. i still dont understand why you need OD in the 1/8th when there are plenty of people running the same gear ratio and dont need OD in the quarter. when i run in the 1/8th i barely make it to 3rd gear just before the traps

NoGo95GT

[QUOTE=luckythirteen13;6357415]what trans do you have again? i have 3.73 gears and a 28" tire. using an online gear calculator with my tire size and gear ratio, my 3rd gear at 6700ish rpm i can hit about 140mph. its been a while since i did the math. i still dont understand why you need OD in the 1/8th when there are plenty of people running the same gear ratio and dont need OD in the quarter. when i run in the 1/8th i barely make it to 3rd gear just before the traps[/QUOT

I have an AODE with the 4r70w gearset(I bought it used). The more I think of it, when I had my stock AODE and before the Vortech I trapped 105 in quarter while still in 3rd gear. I believe it was at 5500rpm though. And now.....I have no clue what to think. I know for a fact the transmission shifts at 30 something, then right before 60 it goes into 3rd gear(All shifts done at 6000rpm), and I remember the car going 88mph when it needed to shift, but wouldn't. I adjusted the tune for the 4r70w gearset. When I get home from vacation, I am going to go over the transmission tune parameters and see what I get. Because, you are right, there's no way I should be going into 4th in an eighth stretch. And recently at the dyno, my third gear went past 100mph. Granted, it was a dyno, but still....

bpark8824

Just trying to clear up a couple things here but can the stock pistons, rings, rods, and bottom end handle 10-12 psi of boost? Is it just the heads and cam, also the intake that hold back a stock motor's boost? I thought with stock heads you should only be running 6-7 psi? But i've seen plenty of guys running 12 psi + on stock rods and pistons but with afr's or TF's up top. So im just assuming its the junk stock heads that hold it back?

NoGo95GT

I run 15psi on stock internals with no problems. It is all dependent upon your fuel and the tune. Of course when you pass 500rwhp, then you are dealing with a ticking time bomb on the stock block. Other than that, the 5.0 is a pretty stout motor. On stock heads you can run quite a bit of boost. I've seen some running 14psi. The problem with the stock heads, is under all that pressure, the stock head bolts aid in the lifting of the heads under boost. That's why ARP head bolts should be a must when you change heads. Some have even said to run studs. However, I run the ARP bolts and have not had a lifting problem with them. Also, ypu can actually make more boost than a car with upgraded H/C/I. This is because boost is a measure of restriction. The less restriction you have, the less boost you make, but with more power. In other words, a stock 5.0 with a SC pushing out 18psi(hypothetically) should make less power than a good H/C/I car with 8psi. Another thing to note with the stock heads. The more boost you make, the more heat that is created. Unlike aluminum heads, the stock iron heads are not that effective in dissapating heat effectively. So detonation can become a major problem. Heck, I have to run 93 octane on my stock 95 because it pings so bad, imagine if what high boost would do. I am not sure if the 86-93 cars are as bad as the 94-95 Mustangs when it comes to detonation(The 94-95 tune is terrible). Overall, I would say 8-12psi is a good amount of boost to run on stock heads. And as long as you run a good tune with all the proper fuel, then I would not worry about the 5.0 internals. Hope this helps.