LQ advice

[IndyNova]

Thank you for the advice! I do have the stock ecu that came from the truck, but it has been suggested that I buy a camaro one. Any thoughts? Jeff, I'll send you a pm on the heads/intake. Also, who does the throttle body work? Thanks again for all the help!!

[jwcarguy]

Originally Posted by IndyNova

Thank you for the advice! I do have the stock ecu that came from the truck, but it has been suggested that I buy a camaro one. Any thoughts? Jeff, I'll send you a pm on the heads/intake. Also, who does the throttle body work? Thanks again for all the help!!

That old of a pcm, you should be fine for what you are going to do (street car)
Maybe someone with better "tuning" experience can chime in, if I amd incorrect
The older pcm's will support both a cable style TB "DBC" and a Drive by wire "DBW" TB it has the drivers for it

I do know that a lot of "tuners" recommend the #411 / #896 pcm's but be careful, some the S10 trucks came with that pcm and a tune will be with a v-6 VIN #, so you would have to have a V-8 VIN # loaded into it
I had that happen to a pcm that I sent to Texas Speed for a Mail Order Tune, the guy that I did the LS swap for in his long travel sand rail, was on a budget, and couldn't do the $550+ for the chassis dyno tune (which is better) the pcm that he got with his engine that was supposed to be from a Z28, was actually from a Oldsmobile Bravada V6
So Texas Speed had to go to a Chevy dealer and have a V8 Vin "loaded" into it

As for the porting/ polishing of the TB, I use Potz Speed and Performance in Jacksonville, Florida, but there are a lot of other businesses out there too

Jeff

[gnx7]

Brian Tooley Racing (ex cylinder head guru for TEA (Total Engine Airflow) can custom grind you a cam for around $400. He knows what he is doing and doesn't do it as a part time gig like some of the others.

Dump those iron heads and shed some weight. If you can get e85 easily than get the compression up to around 10:1 for boost. If you don't plan to run boost.... 91 octane will support 11:1 to 11.5:1 safely and 93 octane can do 12:1. Compression is essentially free power.

5.3 heads are the smallest production chambers; however have smaller intake valves. New Manley oversize s/s valves are only about $120/set plus machine work.

If you don't care how it looks... and have the hood clearance... the truck intake recently went 8.30's@164mph on a stock 6.0 shortblock in a Nova with a turbo. He did this at 3,000ft DA, on his 2nd pass ever I believe, and has more left in the 60' time and also the turbo can be cranked up a bit too. At sea level with better 60' time dare I say it may go high 7's?

Your motor has LS1 style rods good to about 600rwhp before they bend. The newer style LS2 rods can handle around 900rwhp or so before they bend. LS9 gaskets and head studs with enuf fuel and a good tune.... and you are good to go!

http://ls1tech.com/forums/forced-ind...-75-mph-4.html

[WSSix]

Good catch on not milling the 317's as I mentioned, Jeff. I forgot he talked about boosting the engine when replying.

You can load a Fbody program onto that PCM. No need to physically change the PCM out for another one. You'll want to stay cable actuated on the throttle body though. Going over to drive by wire requires another module for the go pedal and just adds unnecessary complications I think.

[PTAddict]

Originally Posted by WSSix

You can load a Fbody program onto that PCM. No need to physically change the PCM out for another one. You'll want to stay cable actuated on the throttle body though. Going over to drive by wire requires another module for the go pedal and just adds unnecessary complications I think.

If the trans is a 4l80e, you can't just load an F Body tune and have it work. You'd need to get a "segment swap" done to an F Body tune in order to control the 4l80. But, although I'm not familiar with the differences with truck ECU, I don't offhand see any particular reason why you'd be better off starting with an F Body tune than the stock truck tune ... both will need extensive tuning considering the modifications proposed.

[IndyNova]

It is a 4l80 trans, 99% of the driving will be street driving, and hopefully I'll be able to auto cross it, but gotta get the eng dialed in first though..lol

Ok, so it looks like I'm headed the ls9 head gasket, head studs, ls6 intake and 317 heads and custom built cam. Since I can use the ECM than came with the motor, what options do I have on my wiring harness? I know I have to have it re-worked, but I'd really like to keep as little wiring exposed as possible, and mount the ECM I side the car.

[IndyNova]

One thing I forgot about is the converter. I plan on doing a shift kit, but should I buy a converter also? And what stall would you guys recommend. I've actually been rethinking the turbo route at this point, not sure if that makes a difference or not