Parrothead497

I'm looking to throw a heads/cam package on my 98z M6. I will be adding a Fast 90/90 setup and was looking at Texas Speeds PRC stg 1.0 LS6 heads and cam package. As I understand I will not have to flycut the pistons with these heads (but I will with the 5.3's ?) They give quite a few options for a cam (http://www.texas-speed.com/shop/item...d=680&catid=47)

The car will be 95% street use, so I really need good driveability. So what cam should I go with in order to see good mid-range power, driveability, and rwhp > 425? Or if you have any other suggestions for a head/cam package that meets my requirements feel free to throw them out.

Thanks for looking

Websy21

iTrader: (34)

Personally I like the LS6 heads better, I say bet them and istall with a .040 gasket and enjoy 11:1 CR. For your needs I say get the 228 or at the biggest the V2 torquer. Many have both and again, personal preferance. Get either on a 112 LSA and find a good tuner. You will easily reach your goal with a A4 and overly exceed with a M6. 420rwhp no prob, especially with a fast 90/90. While you are at it, get it ported for another 10 ponies to the ground.

COOKIE MONSTER

iTrader: (5)

With the setup I got, you'll put 445-465rwhp. MS3 (237/242 .603/.609" 112 LSA, Fast 90/90 (ptm tb), Fast 36lb Fuel Injectors, PRC stage 2.5 5.3l head Dual springs,

COOKIE MONSTER

iTrader: (5)

btw, this is for everyday use....

BIG_MIKE2005

iTrader: (116)

I love my 5.3 heads & 224 combo. It's running very hard right now even without a tune.

Sales4@Texas-Speed

iTrader: (4)

The Terminators or 5.3l heads will have the smaller runners for extra mid-range power. Either of those cylinder heads should work really well for you.

BOWTIE

This is not what I was told by Jason at TSP. Intake valve clearance on a set of 2.5 5.3's should be about the same as the stg 1 LS6's, ex clearanance should be better. I would like to give you a recommendation, but since i have not even started working on mine yet, I can not.

Parrothead497

So you won't have to flycut the pistons with the 5.3's? I have read a few posts where people have had to do this. Maybe they were running a different set up. So I can go with the 5.3's for extra midrange power due to the smaller runners? What is the advantage of the LS6 vs the 5.3 if any? Sorry for my ignorance on this subject.

Thanks

SweeTbone

iTrader: (8)

You don't have to flycut with the 5.3s. (For most of TSPs cams) I have the stage 2.5 and the Torquer V3 (231/234 .644/.595 on a 111) and have no problems at all. Bolt it on and in and go.... Fast.

Websy21

iTrader: (34)

nice numbers how do you like that cam?

SweeTbone

iTrader: (8)

Great cam. Honestly, it starts pulling a *few* hundred RPMs later than I would like it, but when it starts to pull, HOLY SMACK. It's like chaos unleashed.

As for the numbers, I think a less restrictive exhaust (lose cats) would have helped my numbers. Thanks for the compliments.

Websy21

iTrader: (34)

ya never seen that you have cats, you should loose them. Did you degree that cam at all or did it have any ground in it?

kingsey

I think im going to go with patriots kit they are coming out with in november. Heads cam and pushrods for 1399

The cam is 225/229 and made to work with the heads in the package. Hopfully it'll work out well

SweeTbone

iTrader: (8)

Installed dot to dot and should have had 1 degree ground in. Advertised 111 +1. Just off the shelf grind from TSP.

BOWTIE

When does it start "pulling"? Do you have a dyno graph? One of these days I will be running a very similar combo except with a slightly smaller intake lobe
(227 .640) and narrower lobe seperation and slightly more advance (110LSA +2).

SweeTbone

iTrader: (8)

Starts pulling in the 3500 range. By about 4500-4600 its full pull all the way till I shift at 6500. I love it. Dyno graph and vids. --> https://ls1tech.com/forums/dynamometer-results-comparisons/799450-dyno-results-prc-5-3l-stg-2-5-torquer-v3-ported-fast-90-a.html