Cylinder-Head-and-Cam Package, 1999-05 402 CID LS1 600 HP

**ArcticZ06** · 09-01-2007, 02:53 PM

Someone seriously needs to buy this package and write a review before I decide to pull the trigger! Anyone thought about ordering one of these? They're only $2,955.

600HP Package
http://www.slponline.com/view_product.asp?P=12227

525HP Package
http://www.slponline.com/view_product.asp?P=12226

Don't know the HP on this package but it says its emissions legal and only $2,548.75
http://www.slponline.com/view_product.asp?P=12225

**ATCharming** · 09-01-2007, 02:56 PM

am i missing something? i dont see a price

**ArcticZ06** · 09-01-2007, 02:58 PM

Originally Posted by ATCharming

am i missing something? i dont see a price

$2,955.55

Its on the left side.

**ArcticZ06** · 09-01-2007, 03:06 PM

The HP estimates seem pretty high on these compared to what others have reported with their head/cam combo. What do you guys think?

**Mr. Luos** · 09-01-2007, 04:52 PM

It is what SLP claims....flywheel numbers. Even then....

They are bogus. That is what SLP does.

Oh...and that is just for the heads and cam, not for the entire 402ci.

**TACE02** · 09-01-2007, 05:56 PM

HOLY INFLATING NUMBERS BATMAN!!! Yeah The

is in order. but yes looks like SLP is guessing at flywheel HP ratings.

**ATCharming** · 09-01-2007, 06:46 PM

they are optimistic flywheel ratings. u could put that money elsewhere

**Zboner** · 09-01-2007, 06:48 PM

yea on a good cam and L92 heads

**TACE02** · 09-01-2007, 07:51 PM

hell if you allready have a 402, then I would go with LS7 heads (flow over 330 CFM @.600 lift, from the factory) and a nice healthy cam. And with a stage 2 or 3 port on them hmmmm, who knows what they will flow.

**NoGo95GT** · 09-03-2007, 11:28 AM

For that price you could go with Trickflow's Heads and cam. It's 3100$. I have their H/C/I on my 95 mustang Gt and it really woke the car up. They make really good products that last. Check it out

**FASTSS** · 09-07-2007, 05:24 AM

Originally Posted by TACE02

hell if you allready have a 402, then I would go with LS7 heads (flow over 330 CFM @.600 lift, from the factory) and a nice healthy cam. And with a stage 2 or 3 port on them hmmmm, who knows what they will flow.

You are thinking of L92 heads. Not ls7. You must have a minimum of 4.10 bore to run ls7 heads.

**FASTSS** · 09-07-2007, 05:26 AM

BTW I would not call those ratings too optimistic on a 402. Matter of fact I would say the 525 one is a little low. That package with the rest of the bolt-ons should see almost 500 rwhp.

**TACE02** · 09-07-2007, 02:01 PM

Originally Posted by FASTSS

You are thinking of L92 heads. Not ls7. You must have a minimum of 4.10 bore to run ls7 heads.

o yeah, duh... thats right they are on 427's right. now that would be NICE!!!

**Mr. Luos** · 09-07-2007, 03:04 PM

Originally Posted by FASTSS

BTW I would not call those ratings too optimistic on a 402. Matter of fact I would say the 525 one is a little low. That package with the rest of the bolt-ons should see almost 500 rwhp.

The 525HP one is on the 346ci...

**TACE02** · 09-07-2007, 05:05 PM

yeah I would have to see that to believe it. A 525 HP Head and Cam only combo for a 346 CI from SLP...

**Tyler_LS1** · 09-07-2007, 05:10 PM

Maybe its with full boltons and supporting mods as well that it would produce that much horsepower.

**TACE02** · 09-07-2007, 05:14 PM

Doesn't mention it in the advertisement, and even with full bolt-ons, I don't see it.

**rc74racer** · 09-07-2007, 06:00 PM

Maybe those numbers are a little inflated but not much. 525 at the crank is has to be less then 450rwhp. Those are AFR heads and I don't see why with full bolt ons you wouldn't be in the ballpark of those numbers. Still I think you can do better for 3k.

**NIKDSC5** · 09-08-2007, 05:51 PM

Originally Posted by TACE02

o yeah, duh... thats right they are on 427's right. now that would be NICE!!!

okay now help me out l92 heads are what I want if i plan on building a 427? or I want the ls7 heads? and the ls1 can only be bored over by .030 making it a 355 with out the 4" stroke crank so does that equall the minimum boee 0f 4.10 for the ls7 heads?