1320king

iTrader: (4)

So ive been messing with my project car for monthssss. Changed plans from turbo build, to cam only build, now I have finaly pulled tge trigger and not changing and doing a nitrous setup for now. Here is mysetup, let me know what u guys think of it, what I shoukd change and is 9's even realistic

Specs:
2900lbs (rx7 *with me in it*)
10 gal fuel cell
044 pump
Th400 rmv, trans brake etc. (rossler t2)
4000 rpm nitrous converter (dont have yet)
Ford 8.8. 3:55 gears, 35 spline, spool, narrowed etc.. (tri 4 link)
strang coilovers 110lb springs
Lq4 shortblock stock
arp rodbolts
317heads ported, dual springs
9.5-9.8 compression
1 3/4 long tubes
hardened push rods
trunion upgrade
TSP ls6 ported blueprinted oil pump
Cam (not sure yet still need to buy one)
Holley hp efi computer
150 wet nozzle kit
275/60/15 tires m/t drag radials

Hoping to be close to 400 n/a (380-390) and hit a touch over 500 on spray (510-15)

Carter01

iTrader: (11)

Easy..... Just research and learn how to tune the nitrous and suspension. At 2700lbs you should go deep into the 9s.

1320king

iTrader: (4)

Thanks for the input, just read that article on GMH WOW, you car looks so sleeper. maybe ill switch over to a 78mm plate with 200shot if the nozzle doesnt work. Maybe a sponsor can "lend" a man a plate

zracer323

iTrader: (12)

I wouldn't say it will be easy. It's possible but will definitely take some tuning. Your compression ratio is not doing you any favors on making power with spray.

1320king

iTrader: (4)

Ya thats the part iam nervous about.

speedtigger

iTrader: (16)

If my recent experience is any evidence, I agree with Carter. I would like to see my car at 2700 lbs.

Carter01

iTrader: (11)

You and me both sir!

1320king

iTrader: (4)

what do you guys think of the 3:55 gear?

futureuser

iTrader: (1)

That combo should go into the 9s with the 3.55 if everything works and you hook. They should work fine and help you hook up.

gnx7

iTrader: (28)

You are leaving an easy 3-4mph on the table with that mild compression....
Miles better with 11.25:1 or more compression.

When you spray spend the extra dough and run some 100+ octane fuel for safety barrier.

Use this calculator to see if those gears are optimal.
www.f-body.org/gears

After paying a local tuner $600 to tune an n/a LS2/LS3 top end combo and him taking 1.75hrs total...... I bought a Holley HP EFI myself for my LS7 RX-7 to never be at the mercy of a tuner again. fawk that BS.

baycityrides

your compression is fine... i was doing some reading and higher compression doesnt "use" as much of the nitrous as you shovel in. the lower compression will use more of it... but if in doubt.. put in bigger pills!!

10secZ28

iTrader: (6)

a nitrous motor still has to draw air in therefore yes he is leaving a lot left on the table with low compression, because we dont have air being forced in we need to move as much air in and out as possible therefore we nitrous guys need more compression, and there is more to it than just compression.

Sales@Tick

iTrader: (3)

Are you serious?

Get the compression up, nitrous just like anything else likes as much compression as you can give it without detonating.

If you need a cam let me know I'll be glad to spec you out one.

StrokerTA

Over the years nitrous engines have gone up and down with compression. For awhile low was the big thing, then huge, now it's kinda leveled off.. If you have the right cam for your application you will go into the 9's fairly easily with competent tuning. Is the compression *optimum*, I would say no.. To go 9's at 2700lbs, I think it's more than adequate.
I'd like to see what the motor I built for WhiteLTone would do at 2700lbs.