228/232 cam dynoed, finally!

**blackbird0230** · 07-07-2012, 05:24 AM

Well, finally after months of the new cam being installed me and my boy/tuner finally got around to dyno tuning the car. We had so many headaches with this install; anywhere from the stock pulley not going back on to the point where it snapped my install tool, to push rods, lifters, new head studs, etc. I've been rolling around on a street tune since final install and yesterday we finally got a full tune on dyno.

So here it is-

She made 400.5rwhp/ 372.68rwtq on a dyno jet in arvada, Colorado (yes we have high elevation)

Mods:
Texas speed 1 7/8" longtubes
Custom catless true dual exhaust with magnaflow "bullet" style mufflers
Slp lid
K&N filter
Ls7 lifters
Texas speed 7.500 pushrods
Powerbond 25% underdrive pulley
Custom comp cams 228/232 .588 .595 on a 112lsa

Sorry for video, I didn't record it. I have videos on my camera but it's an old mini DVD cam and it hasn't been formatted for the computer yet.

**blackbird0230** · 07-07-2012, 11:03 AM

**1WickedWS6** · 07-09-2012, 05:09 AM

Awesome numbers. I'm putting in a similar cam in a couple weeks and I hope to come close to those numbers too. Do you think the underdrive pulley is worth the money spent on it? I'm debating on getting one or not.

**blackbird0230** · 07-09-2012, 06:45 AM

I think it's a sweet piece, looks way better than factory but I'm not sure about the performance gain... I'd say just do it or you'll always wonder if you should have

**1WickedWS6** · 07-13-2012, 11:02 AM

Good point. That's probably what I'll do then. How is your idle now with the 112?

**blackbird0230** · 07-23-2012, 09:15 AM

The 112 is perfect IMO, started right up no problem and a buddy of mine did a 110 and he had some tuning issues on start up. I'll stick to 112 on my next cam

**1WickedWS6** · 07-23-2012, 09:56 AM

That's what I've been hearing too which is why I went with 112 instead of 110 or 114. I can't wait to get mine in next week

**CHEVELLE of JONESY** · 08-07-2012, 09:24 PM

I live down in Littleton and I am installing a Lunati cam in my LS2 powered Chevelle with numbers that are very close to yours . Its nice to see what I could expect from living in a horsepower robbing environment and I think I will be very happy to get the same power to the rollers as you did.

**2000redcamaro** · 09-07-2012, 06:36 PM

nice i put down 415 with a 228/232. 509/608-113 with some crap ported heads and long tube headers. I just built my 408 and will be tuning it in the next few weeks. im looking to put down 550ish rwhp.

o and just a cheap tip to use for a balancer install tool, buy a ls7 balancer bolt, it is longer then the ls1 bolt and will pull it almost all the way on, then use the ls1 bolt to finish it up. throu the ls7 bolt in your tool box and use it next time.

**CHEVELLE of JONESY** · 09-10-2012, 08:03 AM

Thanks for the Bolt tip, I am always interested in saving a couple of bucks when I can.

**prokilllsx** · 09-15-2012, 03:04 PM

Nice numbers. Is that an auto or 6 speed car?

**blackbird0230** · 09-17-2012, 06:50 AM

It's an M6

**the951racer** · 09-17-2012, 01:12 PM

Nice numbers! Car looks good

**CHEVELLE of JONESY** · 10-21-2012, 01:32 PM

Blackbird, Now that the summer is gone, how did your new combo work on the street?

**04yellowjacket** · 11-05-2012, 04:30 AM

why didn't your tuner up your rpm to 6900. on stock rockers and lifters that is as far as you can go. and you can make a bit more hp all the way up. my 04 ls1 has been running 6900 rpm for the past 45000 miles on a torquer 2 600/ 605 lift cam. and with stock heads, intake, and bottom end i made 399rwhp and 390rwtq.on a dyno jet. my builder and tuner put in the old style dual springs in for the high rpm's.
I just went and had a dyno done and the tune had lost me 10 rwhp and 10 rwtq after 3 yrs and 1 month of hard abuse. and it gets red limited to 6900 every day. don't burn any oil still to date with 108000 miles on it.

**blackbird0230** · 11-05-2012, 08:59 AM

Originally Posted by CHEVELLE of JONESY

Blackbird, Now that the summer is gone, how did your new combo work on the street?

I love it on the street it doesnt get a lot of bottom end but my driving is primarily on the highways anyway, I didn't lose any noticeable gas mileage either so it was a great turnout for me.

**blackbird0230** · 11-05-2012, 09:02 AM

Originally Posted by 04yellowjacket

why didn't your tuner up your rpm to 6900. on stock rockers and lifters that is as far as you can go. and you can make a bit more hp all the way up. my 04 ls1 has been running 6900 rpm for the past 45000 miles on a torquer 2 600/ 605 lift cam. and with stock heads, intake, and bottom end i made 399rwhp and 390rwtq.on a dyno jet. my builder and tuner put in the old style dual springs in for the high rpm's.
I just went and had a dyno done and the tune had lost me 10 rwhp and 10 rwtq after 3 yrs and 1 month of hard abuse. and it gets red limited to 6900 every day. don't burn any oil still to date with 108000 miles on it.

The valvetrain setup that I have is just about perfect at 6700 rpm. I don't feel like I should put anymore stress on it for an extra 200 rpm.

**redbird555** · 11-05-2012, 10:36 AM

Originally Posted by 04yellowjacket

why didn't your tuner up your rpm to 6900. on stock rockers and lifters that is as far as you can go. and you can make a bit more hp all the way up. my 04 ls1 has been running 6900 rpm for the past 45000 miles on a torquer 2 600/ 605 lift cam. and with stock heads, intake, and bottom end i made 399rwhp and 390rwtq.on a dyno jet. my builder and tuner put in the old style dual springs in for the high rpm's.
I just went and had a dyno done and the tune had lost me 10 rwhp and 10 rwtq after 3 yrs and 1 month of hard abuse. and it gets red limited to 6900 every day. don't burn any oil still to date with 108000 miles on it.

His cam is also more mild. The tuner puts rpm in according to where the car makes power, his power falls flat around 6500 so 6700 is about perfect. Plus anything over 6800 and your really gambling on the rod bolts, you may be lucky but spinning stock rod bolts that high is a little scary...

Also never use a bolt to pull on a balancer to the crank. Yes the ls7 is longer but your still putting a lot of stress on just a few crank threads. I dont care how many times a given person has done it and had it work, it only takes 1 time to screw up the crank threads. Instead go put the balancer in the over at 225 for about 30 minutes. Grab it with some gloves and it will slide right on... If thats not an option spend the 20 bucks using an install tool.