https://www.texas-speed.com/p-3961-p...m-package.aspx

I was looking into getting some parts to put on the car over the winter and came across this package. Anyone have any experience with it? Car will be a weekend fun toy not a daily driver, but its gonna be driven on the street.

The specs I was looking at are as follows:

.675 Lift Dual Valvesprings w. Titanium Retainers
MS3 Cam on 112 LSA
7.4 Pushrods
Z06 Billet Double Roller Timing Chain
Ported LS6 Oil Pump
62cc

Price as stated $2672.97

Will be going on a stock LQ4

Thoughts or ideas? Is the price of the setup worth it or should I look somewhere else? Not trying to make crazy power and still want it to be streetable.

 

I was going to go with As Cast heads and was advised not to unless having them worked over. I believe a few years ago the dart, tfs, and prc as cast stuff was less money and you could get them hand ported and still be a couple hundred cheaper then a set fully cnc'd offerings out of the box. That being said I was told to go with a cnc'd 243 or for aftermarket go with a afr 210 or tfs215. So for prc stuff I would go with the cnc 215 or 227....being you have a 6.0 I would lean towards the 227.

 

Our as-cast heads are hand blended already and don't need to be worked over any more to get the benefits of the head. They are a great performing head and have been used in many combos to make really nice power gains. We even put them on a cam only z06 and picked up 30rwhp over a stock 243.

 

Ok thanks for sharing...what I was getting at is a TEA stage 2 243 or AI 226 243 will yield 40-50whp gains over a stock 243. So a fully worked 243 in the right hands tends to make a little more power then a as cast aftermarket head.

 

I've seen some good numbers from the PRC heads and just wanted to get some opinions hopefully from someone who has run the setup. Would the 215cc setup be better to run than the 225's? My old TA had a set of Patriot LS6 heads on it and everyone told me they were **** and wouldn't work well and the car made 430rwhp and never had a issue related to the drive train.

 

Those heads seem to be over looked for some reason but look to be the best bang for the buck heads available, it would probably help if they were advertised as semi CNC'd head instead as thats a more accurate description. I however would pass on that head cam kit. I'd either get just the heads with the .650 springs or call can get them with no springs and install BRT springs myself, and order a Polluter V2 cam kit from Tick Performance. The Polluter has similar specs to the MS3 but has less aggressive lobes for a more stable and reliable valvetrain, and a stable valvetrain will also produce more power.
https://ls1tech.com/forums/dynamomet...lts-video.html
https://ls1tech.com/forums/dynamomet...o-results.html
https://ls1tech.com/forums/dynamomet...s-500rwhp.html

 

Wow! That GTO makes great power with that setup. Definitely has me looking into other options. Thanks for the input that helps a lot.

 

Dyno numbers would be the least of my concerns...look at trap speed on these setups. For example I have seen 380whp cars run low 11's @ 122 and I have seen 450whp cars run mid 11's @ 118. A true 500whp car will trap 125+ in good air. Yes the PRC stuff makes great power...I was looking at the 225's and tfs 220's for a couple months. My point was a AI or TEA 243 will make slightly more power then cast stuff, but a full cnc aftermarket will do better then a stock cnc casting. Either way Texas speed has you covered and are great to deal with. I was not trying to steer you away from them.

 

Even the Camaro put down good numbers, getting rid of the stock MAF with a SD tune, either a ORY and a 3.5 or 4 inch cutout or TD's, and a under drive pulley that car would probably put down 460-475hp on the same dyno. Also the other GTO that "only" made 489hp might or made 500 if it had 1 7/8s headers instead of 1 3/4s and it didn't have a max effort cam like the other 2 car.

My concern would be that with a LQ4 your compression may be a bit low for a cam that size.

 

to further support my previous posts about 243 heads...again dyno numbers are not a huge concern to me, but you can at least compare this setup to the other links posted above.

https://ls1tech.com/forums/dynamomet...509-447-a.html

 

Looking at the flow numbers between the 2 heads the intake flow numbers are nearly identical and the 225 as cast has marginally better exhaust flow numbers, so they would likely preform about the same only the LS6 2.5 heads have already been ported to their maximum potential and the as cast heads still have potential left in them plus thicker decks and are new vs used castings.