Twin Turbo 408 Results
Twin Turbo 408 Results Combo is a 9.9:1 Compression 408, CNC ported LS3 Head, Fast 102 with 90mm TB, 237/240 .610/.612 115+LSA spec'd by martin @tick, twin 7268 turbonetics, 4l80e trans with 4000PTC converter, Moser rear 28" tire with 3.73 gear
I just got the car broken in and this pull was 8.5-9psi with NO METHANOL and 91 octane and 14deg timing. I'm installing the methanol injection and will turn this up to 16-18psi. I will keep you guys informed. I know there isnt many twin turbo 408s running around so here you go. Enjoy!!
CLICK THE TOP PIC TO SEE THE VIDEO
752RWHP
mustang dyno
I just got the car broken in and this pull was 8.5-9psi with NO METHANOL and 91 octane and 14deg timing. I'm installing the methanol injection and will turn this up to 16-18psi. I will keep you guys informed. I know there isnt many twin turbo 408s running around so here you go. Enjoy!!
CLICK THE TOP PIC TO SEE THE VIDEO
752RWHP
mustang dyno
Last edited by bwolfZ28; Oct 16, 2014 at 03:56 PM.
I think it looks great. I m an e85 fan, but pump and meth is good too. Looks like your gonna run outta gear unless you plan on shifting into 4th....Itll love 3.25's or 3.50 gear and 315 60's......
3.73s is what was in it from before. I'm going to drop down to like a 3.50 or so...not too sure yet on what gears to go with. The rear end is a Moser 12 bolt. I honestly wasn't paying attention to what it spooled at...but it spools quick on the street with the st all and all that. I bet some lower gears would help out quite a bit too.
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Congrats, nice #'s for sure. 
I would go back to a 3.42 rear gear for a 6 speed street car. I can brake the rear loose in my car around 4k rpm in first gear and I'm 100+ hp less than you. Thats with a 315 wide nitto dr, and a blower ramping up. Your car looks like it hits very hard.
I would go back to a 3.42 rear gear for a 6 speed street car. I can brake the rear loose in my car around 4k rpm in first gear and I'm 100+ hp less than you. Thats with a 315 wide nitto dr, and a blower ramping up. Your car looks like it hits very hard.
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Verdad Gallardo What do you think about a 3.42 in my setup? Or should I go with a 3.27... The car does hit very hard.
I'm now relocated in an e85 abundant area so I may switch fuels. The car should make some good power on 18psi
I'm now relocated in an e85 abundant area so I may switch fuels. The car should make some good power on 18psi
The 6768s should be a lot faster with some more cubes.
Thats what the guys at Huron Speed reccommended when i told them i wanted 1000rwhp. Also, I just moved to the bay area. Im in a work condo for the next few weeks until I get a house. Im looking down in San Jose. I work in redwood city. So the car is nearby and Im looking to meet some fellow gearheads down this way. I know a couple people in SJ already but the more the merrier.
Interesting as the 6768's are what John ar Huron recommended to me (418ci at 7,500 rpm with 1k+ rwhp through a glide and 9"). I work in Santa Clara but live in Salinas, not all that far from you.
Im getting closer to my 405 running.....doing the piping now, but I still need to do the 9 inch housing. My 405 has a 80 mm , e85, 3000 stall 4l80e. Its running a accell gen7.
I have built and run more than a couple turbo f bodies, and I ve run 2.75's with a th400 ad 2.73 s in another....Very very little downside. The fact is, I never really run on a great track.....so 3.50's would go up in smoke hitting to hard. The car weighted 3950 ran 10.00 with 2.75's and a 275 et street th400. It 60' in the 1.50 area best of 1.48....not great but good for a basic street night track, not a psca or nmca prepped track.
So now I think Im gonna do 3.00's or 3.25's with this 4l80e but I cant get a very tall tire either....in this body....its a wagon at 3200 lbs. I have 3.00 s so I might use em.....
If they prep your local track well.....a little more gear is ok I think, I just dont see that much, ad after hours of waiting for a pass, I hate to have it go up in smoke.
I have built and run more than a couple turbo f bodies, and I ve run 2.75's with a th400 ad 2.73 s in another....Very very little downside. The fact is, I never really run on a great track.....so 3.50's would go up in smoke hitting to hard. The car weighted 3950 ran 10.00 with 2.75's and a 275 et street th400. It 60' in the 1.50 area best of 1.48....not great but good for a basic street night track, not a psca or nmca prepped track.
So now I think Im gonna do 3.00's or 3.25's with this 4l80e but I cant get a very tall tire either....in this body....its a wagon at 3200 lbs. I have 3.00 s so I might use em.....
If they prep your local track well.....a little more gear is ok I think, I just dont see that much, ad after hours of waiting for a pass, I hate to have it go up in smoke.
Yeah I have had it out on the street quite a bit and it sure is a handful. Now that im driving around down here at sea level the car has much more power out of boost that its not loading the turbos much with the 3.73s. I will definitely have to throw some 3.27s in there and let it eat.