Ryan@BallisticSpeedParts

iTrader: (3)

As we see fit, we try to post some cool and relevant info that relates to our GM/LSx obsession on the "Blog" section of our website.

Here is a recent blog which happens to discuss our latest dyno runs and whats going on with our LS1 FD test mule: Click Here

Check back for new entry's and updates!

Ryan@BallisticSpeedParts

iTrader: (3)

SAE: 516hp/458tq

STD: 530hp/470tq

T.Man

Ls3 heads on a small bore? Nice results man

_GTO_

Impressive , I've never seen ls3 heads on ls1 bore .

Love that curve .

Ryan@BallisticSpeedParts

iTrader: (3)

Thanks guys, we modify the LS3 heads to accept 2.08 intake and 1.57 exhaust valves allowing them to bolt right on to stock bore Ls1’s. This combo works very well, we spent a lot of time testing and developing an “AS Cast” version and “CNC” version. On stock cube LS1’s with our Small Bore Ls3 heads, the gain is just over 55 hp to the wheels from the head swap (241 to Ls3). And our 383 motor with the longer stroke benefits even more from the higher volume flow #’s our heads produce.

• Stage 1: (As Cast) flow up to 326 cfm

• Stage 2: (CNC) flow up to 350 cfm

Flow Sheets and Info Here!

CyberGrey Z28

iTrader: (4)

Very interesting!

What heads were on there before and what did it put down?

Also what manifold?

Ryan@BallisticSpeedParts

iTrader: (3)

These are the only heads we've had on this motor.

We're still using the factory LS3 intake manifold w/ some mild cleanup work done. We haven't run our 383 with any other intake, we'll probably toss a FAST intake on sometime in the near future to see what it gains, I'm interested to see what it'll do.

Rise of the Phoenix

iTrader: (27)

Am I reading this right; you guy's are going to offer small bore LS3 heads that will work on a stock LS1? I guess I need to check out your website, but are these available yet?

Ryan@BallisticSpeedParts

iTrader: (3)

Yes...you've got it right and they are available now. We have the Stage 1 (As Cast) sets in stock, the Stage 2 (CNC) sets are about a 2-3 week lead time.

Check out our site when you have a chance...

Here is a direct link to our LS3 Small Bore Heads: Click Here!

Rise of the Phoenix

iTrader: (27)

Not sure if it's my computer of the website, but it's not pulling up for some reason; just sitting there "thinking". I'll keep trying though.

Great numbers by the way.

Nevermind, got the site to pull up and looking at it now. Do the heads come with springs? I've already got Brian Tooley Racing springs kit, but not sure if they will work on the LS3 heads?

Ryan@BallisticSpeedParts

iTrader: (3)

Ok cool. Our heads are not priced with springs, our pricing reflects a pair of heads including Ferrea Intake & Exhaust valves, but we are setting up a spring option now for PAC .660". Yes you can definitely reuse your springs...assuming they are on factory LS type heads.

LS6

This is wounderfull

Always2Slow

iTrader: (8)

Nice results from stock parts.

blkbird2kta

iTrader: (3)

I would like to see a set of these on a 5.3 with some boost thrown at it! That would be a very nice combo.

Sales@Tick

iTrader: (3)

5.3 has a 3.78 bore, not large enough.

Tainted

iTrader: (9)

Very nice! Are the valves on a new angle as well?

Ryan@BallisticSpeedParts

iTrader: (3)

Thanks!...valve angle is stock 15 degree.

Ryan@BallisticSpeedParts

iTrader: (3)

Yes, you would definitely need to open up the 5.3 bore to at least 3.898 for our heads to work, but you would then have a nice iron block combo that would love some boost.

Also, we do have a customer using our Stage 2 heads on a built Ls1 w/turbo, the motor is running, there are a few things on the car to wrap up, then its off to the dyno. So I'll be looking forward to sharing his results, as I think he has the only boosted motor with our heads that I'm aware of.

usdmholden

Any results on a stock short block LS1 with dyno sheets?

Fosnot

iTrader: (15)

Are these just stock LS3 heads with resized valves? Or are they aftermarket with thicker decks... 383 and these heads with some boost or nitrous would be fun