LS1NOVA

iTrader: (12)

LSX block 427 cubes prob from Speed Inc
Trick Flow 235 6 bolt
Custom spec cam
Fast 102
C6 or truck mani's with v bands
Precision billet 62/65's
Tial 38's
Tial 50 BOV
Treadstone intercooler
3" downpipes out the back
4L80E with billet shafts
Baumann controller
Yank PY3400
G Force 9" IRS kit
Minitubs and 335 DR's
Magnafuel 4303
-12 feed to pump, -10 to rails, -8 return
Nasty fabbed fuel tank
E85 fuel
Dynotune USA tuning

Anything Im forgetting or should do differently in your professional opinions?

jfg455

iTrader: (5)

extra checks in the check book......

JAX04

iTrader: (17)

nova, i have a set of truck manis with vbands on my gto now, i think im taking them off, they are fresh, and welded nice, shoot me a pm if interested, ill get you pics if needed.

i cant use them. they are not exiting friendly enough for me to be able to do a single front mount, if i were twin, id use them. but im single.

project looks great too! cant wait to see the outcome!

Bobsmyuncle

iTrader: (32)

which intercooler??? for over 1k hp at the tire, you will need to be pushin some air thru tht bitch

LS1NOVA

iTrader: (12)

I was thinking this one but I may need a bigger one?
http://cgi.ebay.com/ebaymotors/Tread...Q5fAccessories

Bobsmyuncle

iTrader: (32)

looks like it would do the job

MY99TAWS6

iTrader: (3)

Maybe consider ERL aluminum 427 instead.Superdeck one. Thats what I plan to run with next season. Going with think ls9 cam might upgrade my fast 90 to fast 102.You will of course needs some huge injectors low impedence 120 or bigger or the new big high impedence but they are huge bucks.
Fuel system may be a bit overkill but running e85 likely good idea.
Also maybe you can find a used aps gto kit and then put LG turbos or other upgrades on it. Don't think they make them new for GTO anymore not sure and dealing directly with aps is not the best experience really.
You will also need either pricey link bar lifters like morel ? or this new setup from erl to let you run like ls7 lifters with six bolt heads. they have some new setup where you can even change lifters without pulling off the heads.

LS1NOVA

iTrader: (12)

The LSX block comes with lifter guides, can these not be used with LS7 lifters?

stevieturbo

Consider larger wastegates, but you might be ok with 38's

LS1NOVA

iTrader: (12)

Anyone else?

LS1NOVA

iTrader: (12)

Thanks for the advice on the ERL superdeck, probably going to go that route now.

98Z28CobraKiller

iTrader: (17)

I would put those turbos on a 370-390 not a 427.

LS1NOVA

iTrader: (12)

So what would you put on a 427, 6765's? Keep in mind the limited space in the GTO engine compartment.

From what ive found, several cars such as Eric Berry's 427 made good power on the 6265's (over 1000rwhp) and I need very good spool on the street. Is going any bigger just betting carried away or is backpressure really going to suck with the 62's. The owner of the car wants a 427.

68 SS

iTrader: (23)

You don't need 427'' to get there check out the AES 390 in the FI section hard to beat for the price.

LS1NOVA

iTrader: (12)

The owner of the car WANTS a 427.

68 SS

iTrader: (23)

To each his own, me personally I would rather have thicker cylinder walls and more boost!

LS1NOVA

iTrader: (12)

The ERL block has plenty strong cylinder walls.

98Z28CobraKiller

iTrader: (17)

6765's would be a better match but still smallish for the cubes IMO. Spool will be instant with a stalled auto. Perhaps the owner doesn't know much about FI and the amount power that we are talking about here and just needs an education. A 427ci motor NA can just about over power the street.

The street wont hold more than about 800 rwhp. 427 ci motor properly turbo charged can put out well over 1500 rwhp in fairly mild config.

I tune a fairly mild 422ci w/ twin TC78's street car that puts out probably just a little more power than the 6765's. It spools instant and on the wastegate is almost too much for the street with the best of the best street suspension. Car runs 8.05 @ 176 thru full exhaust. That's the kind of power that you are talking here. It's overkill and will break everything in that drivetrain.

98Z28CobraKiller

iTrader: (17)

Here's some lite reading for him.

https://ls1tech.com/forums/forced-in...c78s-kytp.html

LS1NOVA

iTrader: (12)

Thanks for the input. He probably is not really aware of the power potential and to be honest Ive never experienced more than 600 to the wheels. However, Im just a small time builder putting stuff together in my garage. He wants 1000 to the wheels and 427 CI. Its up to me to come up with a good combo. If I give him more power than he can ever use, he will probalby be even happier. I know hooking it up on the street is hopeless, even using a boost by gear setup with the boost controller. It does have 335 drag radials, so definatelt better than the stock skinnies on the back of a GTO though.

The drivetrain will be up to the task (I think) with a 4L80 (billet shafts), 9" rear, and CF driveshaft.