$750 L98

iTrader: (7)

It was that or a dyno jet, i don't remember.
Timing is only 22* can't go any more with the stock manifolds, is what they are saying.

The cam is a wide LSA 113+3 232/234(XER281HR) cam, standard gasket as far as i know.

They ran it up to 6600RPMs, and 13.2AFR across the board, no drop off i was told about.

It had valve float issues with LS6 yellow springs, so they put on comp 921's and titanium retainers, as well as comp R's.

From what i've read up on, it seems that low compression ratio, wide LSA, and stock manifolds on stock 317 LQ9 heads are holding it back, but i still expected to see a bit more out of it.

Maybe the only solution for this is boost, or lots of nitrous?

ExTurbo

i was running like 26* of timing with my stock LS2 manifolds so id say the tune has some power left in it. The manifolds are definately holding you back but i have to wonder if the cam was degreed properly and if the springs were set up correctly. just throwing that out there. i have a similarly sized cam in my car that makes well over 400. In fact considering i trap almost 120 through stock 243's in a 3700lb car id say its closer to 430rwhp. Throwing nitrous at it isnt going to change the fact that your down on power to begin with, that cam should net you close to 400rwhp through those heads and your automatic. Id say take it to the track, if it doesnt hit 110 at least theres something wrong.

12secSS

iTrader: (30)

Who ever is your tuner is an idiot! 317 are essentially 243 LS6 heads with larger chambers. Your LQ9 has about 10.4 CR, as noted my LQ4 with 9.5 CR and slightly smaller cam took 28 degrees easily and made great power. Take it to someone who is a reputable calibrator. Your setup, on a dynojet should put out 380rwhp easily!

$750 L98

iTrader: (7)

Man this car is a headache...

$750 L98

iTrader: (7)

Ok so I took a tour through the cam thread and found a thing or two.
The cam XER281HR (232/234 .595/.598 113+3 LSA) is the same as the Torquer V2, which I've heard nothing but great things about, what is going on here? Possibly just needs more tuning?

-With a cam on 113+3, that makes the cam a 110 correct?

-With a cam that operates on a 110, does having low compression 317's hurt power.

-Am I sacrificing flow for velocity or vice versa?

-Are stock manifolds dooming this motor to low numbers with this cam?

-Should this cam take more timing than 22*?

Thanks guys, might need a gurus help with this thing!

96lt1ss

iTrader: (4)

The car should at least make 400rwhp.

s346k

iTrader: (4)

with these mods and that cam i'd expect 350-360 whp. these people telling you that you should be around 400whp with a 317 headed motor on STOCK manifolds are CRAZY. if you had headers i'd expect 375whp at most. bear in mind your drivetrain is eating some hp, and those heads ARE NOT designed to turn over 5,500 rpm. you have a lot of factors working against you. 285whp is low, no doubt, but you won't be anywhere near 400 with your current mods. i'd look at the tune, typically if everything else is straight on these engines there is little to cause low numbers.

1) no, it's on a 110 intake center line, but a 113 lsa.
2) no, that cam is fine for the lq9's 10:1 compression
3) yes, most definately
4) yes, with much better flowing exhaust

edit: also, what kind of dyno and what gear did you dyno in?

$750 L98

iTrader: (7)

I'm not sure what gear they dyno'd in, but we had my father's car (2002 Z28) dyno'd there, and it put down 292rwhp STOCK (brakes were dragging after the rear end swap too!).

This is at ARD's Dynojet, My car is still there and it has been about a month now, they are still telling me the dyno is broken and can't get around to tuning my car. I don't know what to do, I've put nearly 20k into this car and I'm still stuck at square 1 (stock numbers). This car has a cam in it and I guess they tuned it over the weekend, but still only came out with 289RWHP....

$750 L98

iTrader: (7)

Well, It's been a while, but I've constantly been on the hunt for problems with the car. So far I've found:

-1/4" leak all the way around the drivers side collector
-Drivers side collector welded together
-Gasket burnt from massive leak
-Pass side O2 sensor shorted
-2 Vacuum leaks, lower pass. side manifold, and drivers side manifold attachment
-PCV setup is routed like the LS1, but on an LQ9 (instead of using the LS6 style)
-Burnt gasket, and small leak at the pass. side collector
-4L80E flexplate (should be a 4L60E)
-LQ9 crank spacer (doesn't need one)
-Stock refinned 2800 stall
-Plastic 4L60E accumulator disc was cracked in several places

The transmission went out not too long ago and i found those problems, that explains a good portion of my issues...

Now the car has:
-Edelbrock shorties
-True dual 2 1/4" exhaust
-New O2 sensors
-Correct angle collectors, and fresh gaskets
-Correct PCV set up and appropriate vacuum ports plugged
-Yank 2800 stall
-4L60E flexplate
-New trans pump shaft
-Aluminum accumulator disc

When this thing gets tuned again it better show 350rwhp+

Anyone think damage may have been done internally, or just keep thrashing on it? Anyhow, lesson is, do every bit of work that you can do YOURSELF. The only person who will give the car the amount of love you do...is...well, you!

$750 L98

iTrader: (7)

I haven't updated this in a while so I figured I would. Oil pan cracked so I tore down the motor for giggles.

ARD lied to me, it's not a LQ9, it's a LQ4 and with the gasket used, compression was roughly 8.7:1 - obviously that is too low for this cam, much less any car that isn't going to see big boost.

It also had the stock pushrods in it, as well as the Comp R lifters which I am told will grenade the motor when used with a non adjustable valvetrain. I also noticed that the cylinders were honed, but stock pistons were used, the pistons seem to move back and forth in the cylinder more than I would think pistons should. You can put your finger on a piston and shake it around in the cylinder.

SO, end result of this thread is: My motor was not anything like the motor I had paid for. It seems it's a junkyard pull out that had a cam shoved in it and installed into the customer's car (my car).

Warning: Graphic photos

CyberGrey Z28

iTrader: (4)

That sucks!! I'm always suspicious about shops building my motors so i always end up buying the parts myself. Hopefully you get it squared away and this time build a better LSX pumping 500rwhp!!!!