Quote Originally Posted by Liquifire View Post
IMO........after this point when you start doing head work, install a cam of any size, up the compression ratio, and start changing the PCM program to get maximum HP out of it you are going to start losing MPG's fast and pushing the reliability of your vehicle drive train.
Hey thanks again. Yea it seems most people are saying the same thing, modifying the engine and valve train can decrease MPG's. I know a happy knob changes timing but i am unsure why one would want to do this on the fly. Time for a Google search. Maybe i can connect different BIN's to it.

Quote Originally Posted by QwikGT View Post
nitrous
I have considered it and maybe a small shot (75 or less) would be plausible. I do have forged engine internals listed. As far as i am aware this would reduce any damage caused by nitrous.

Quote Originally Posted by BillBoost37 View Post
It's all good. I like the way you've listed it out and asked for info/experience as to which ways to go.

And yes..you can have multiple tunes for power and mileage, as well as the various seasons.
Thanks, ill have to look into how to change BIN's on the fly. Def a gas saving tune and a racing tune. Maybe i could connect it to the performance shift button.

Quote Originally Posted by FoSHO99 View Post
That kind of gas mileage your looking for isn't unheard of with a 12sec wbody, but its just not something everyone shoots for when building a fast fwd car. Most of the guys who have done it keep a very basic setup and have one hell of a tune.

There are a lot of things that you listed that you shouldn't need for your goals.

This setup should hit your goal:

Gen V s/c, Phenolic full size I/C, 1.9 RR, 2.8/3.0/3.2 pulleys, 42# inj.

-stock block should be ok unless its high mileage, but still would prob be ok...
-stock internals, stock heads, stock Gen V lim, just opened up inlet for I/C.
-stock fuel pump should be fine, but a fuel pump rewire wouldn't hurt
-there is no reason to port the Gen V s/c, its good in stock form.
-stock axles will hold up very well as long as the car isn't lowered

and Tune. Tune. Tune. and Tune.
Yea i remember a few high 12' low 13 cars on here getting decent mileage. Yea half of the stuff i have listed it probably unneeded but hey why not this is a fantasy build. It seems your right i am over-thinking how in-depth i have to go with the block and the valve train. Thanks for injector size! I was curious about this.

You say the gen V does not need to be ported. Would their be any gains from a P&P even if they are hypothetical and untested?

I have been reading about tuning ALLOT and the more i read the more of a necessity it is. If i knew what i did now when i got my car i would have bought a tuner first.

Quote Originally Posted by bluegtp91 View Post
I'll say this. Don't waste your money on a ZZP block. Second, Triple Edge Transmission is the ONLY way to go. Third, learn how to tune...very VERY valuable tool.

As for mods to hit 12's. I say slicks, fully built TEP Trans w/ 3.29's, custom tune, full size IC, headers of some kind, #42.5 injectors, FWI, 180*, Autolite 103's, and a 2.6" pulley or even smaller if you can do it...on the GenIII ported in/out with a ported TB combo. Honestly...I'd say if you can launch it good enough you'll get 12's out of that IMO.
Ya the ZZP block is quite pricey, although technically price is not supposed to be an option for this fantasy build. I love ZZP's Q & A section for the block. Basically it goes like this. Q: Does the bigger bore do anything. A: We don't know, probably. Yea it would be overkill, and if it were bored out i would need bigger pistons, which as far as i know decrease MPG's.

You say gen3 S/C is their a particular reason for this? As far as i am aware the Gen V is more efficient, are you just trying to say i can get away with a Gen 3 to reach my goal? Thanks for confirming Inj size, also trans gears! Ill have to modify my original post today.