HCI2000SS

iTrader: (2)

This is extremely interesting! Regardless of dynos numbers, theories, etc....this combo works substantially better and that's what matters most! Nice job

74u

iTrader: (9)

This one shows 485rwhp - 121.6mph & 3750lbs.

http://www.wallaceracing.com/hpcalculatorquarter.php

KCS

iTrader: (20)

I'm about 3-4hrs from DFW. If you're ever in the Houston area, I'd take a look at it but I can't promise anything.

74u

iTrader: (9)

I'd really appreciate that No expectations...I'd really like to have another set of eye's on this thing.

JakeFusion

iTrader: (7)

Those are still low numbers. I forgot, what is the rest of the setup (exhaust, intake, rearend, etc). There's a restriction somewhere.

KCS

iTrader: (20)

I'm curious what would happen if you could put the TFS heads back on with the smaller cam...

74u

iTrader: (9)

How low is it in your opinion?

99ss
M6 w/ls7 clutch
10 bolt w/4.10's
stock ls3 heads/intake (milled heads 58cc 11.3:1)
232/240 - 621/613 - 116+4
TSP 1/7/8 (latest revision)
custom 3" TD's w/x-pipe over the axle to the bumper w/magnaflow bullets
95mm throttle body
100maf
ls1 motorsports lid
k&n air filter
stock ss wheels
stock drive pully

NAVYBLUE210

I believe the reason is post #183 page 10 of your other thread.
Your leak down rate ranges from 13-25% (past the rings!)
Think a good rate would be 6-8% with 10-12 acceptable for Nitrous!
I Read the complete other thread and would love to have some Pro
Builders here give their opinions/experience on what they consider
Good numbers, for example:
(Excellent 3-5%, Good 6-9%, Average 10-12%, Poor 12-15%,
Terrible 16%+)
just throwing #s out and asking the question.

74u

iTrader: (9)

Actually if you read it again all holes were leaking 13-17% past the rings except one. The cylinder leaking 25% was leaking past the intake valve.

If you read just a bit further you'll see Brian Nutter (Wiseco) says it would have a minimal impact on power. Brian Tooley also stated the same off line.

Rings were gaped for nitrous...as well.

74u

iTrader: (9)

I almost kept the bigger cam withthe ls3 swap. After talking with Kip I got nervous it was going to surge too much and decided on a smaller cam.

I wish I had the money for an experiment like you suggest.

1989GTA

That shows that the dyno is pretty accurate. IMHO your are only down around 15rwhp or so. I don't want to go back through the other thread but did you run this on 91 octane? Also was the dyno done in 4th gear 1:1?

Myself I would be tickled if my car did 120+ in 1/4 mile. Are you planning to change out the intake manifold down the line? I am looking to see what the Vararam does.

74u

iTrader: (9)

Yes, is a 99 Camaro and 1:1 in fourth gear.

The tune was done on 93oct. Not sure how much timing n/a, but I know it didn't gain or loose anything substantial regardless how much (or little) advance was used. I know the tuner pulled 8 degrees on nitrous just to be very safe.

Not sure about intakes...haven't heard anything about the Vararam

I really wonder how many more mph I would gain with a sixty in the 1.5-1.6 range and just flat footing it all the way down the track??

I would think 2-3 mph would be realistic.

newchevyman

iTrader: (15)

Have you considered having Rick Crawford do his intake 'porting' with the ram air bars on the LS3 intake mani? Put one on a buddy's G8 and picked up significant top end. Wouldn't be surprised if you pick up 1.5-2 mph. It's much cheaper than a FAST and produces similar results, G8 guys say Rick's intake will actually make more top end.

I'm local to DFW. I'll shoot you a PM for a fourth gen coming up this weekend. Nice car!

Kingc8r

iTrader: (21)

I know someone with a LS3 416 with TFS heads and a fast 102 m6 that also has a 9 inch that made about 110 more hp than you. I'd say you're down quite a bit and like Jake alluded to there's a restriction somewhere in your combo.

kinglt-1

iTrader: (26)

First thing I would of done is swap the LS7 clutch instead of changing heads and cam.

Cold Zero

iTrader: (1)

+1

For OP, did you ever checked the clutch for slip issues ?

Your numbers with LS3 & TFS setups are low. LS2Biat with 416ci and TFS215 was putting down 510-520 RWHP

Kingc8r

iTrader: (21)

Yup and there's a guy in this section with a 408 that has put down better numbers as well. Something is amiss.

redtan

iTrader: (5)

Figured you'd post on here and nice to see your attitude hasn't changed. What's more funny is your absolute nut swinging of the square port heads.

Look, noone's debating these can make good power on the right bore and with lots of cubes. On a 416 those cathedrals are overwhelmed and even with the bigger ports of the LS3s they still make good power because of the cubes. You also forget that the cam is a bit smaller so that will help with down low torque production. Good to see you like to focus on one thing and one thing only (the parts you like) and tend to forget about the other stuff that changed which might have contributed to the results.

Now let's see this same comparison on a stock cubed/stock bore 6.0 and somehow I doubt the results would be the same.

Cold Zero

iTrader: (1)

So I'm not the only one who noticed that !
https://ls1tech.com/forums/generatio...l#post18835044

Bill00Formula

iTrader: (4)

When my car was a heads/cam car made roughly 440 rwhp (6 spd, 4.10s, 12 bolt, jack spare front sway bar removed) it usually went 121-122 with a best being 123.6. (MTI ported LS6 heads milled .2 or .3 thousands/LG motorsports cam) my car weighted 3425 lbs (less than a 1/4 tank) and I weighted 230-235 (I have since gained some). At the track scale, the Camaro SSs and WS6s weighted maybe 50 to 75 lbs more. Our track has maybe 15-25 foot elevation. The weather is the issue here. Most of my 1/8 mile mph were 92-93 unless I launched really well and then they would be around 95.

I now have a 427 w/ the so called crappy tfs 235s.