avtarv

My buddy asked me to post this for all of us.

LSA heads, more pics and info to come. Hopefully get them on a flow bench this weekend and get some valve weights tonight and some better pics of the chamber and throat.
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Blitzkrieg

I am considering these heads on my 390 build, but I am going to try a different set of heads first to see how they flow with my setup first. I've had a few conversations with Arun and he has very positive things to say about these heads, they flow well and there less than $1k for a set.

I didn't know they came with springs! Thats cool!

Please post up thoughts on how these perform!

Made in Mexico, thats just awesome, way to go GM, glad they care about American jobs!

robert miller

when is this so called big 390 going to be done. Rickey said he cant wait to pull up beside it.

avtarv

I am posting the pics for Arun. The springs belong in the garbage. He did mention about lights being one but nobody home Clown.

robert miller

:hi de:Robert

Blitzkrieg

I have no intentions on using the springs they come with!

And another smartass on the forum, thats just great!

69ls6

What is the deck thickness of these heads.And can you install a smaller intake valve and have good flow to fit a small bore. 3.907

I've heard of people putting smaller valves in ls3 heads and doing good

Thanks

robert miller

Crap Ricky dont give him any more to think about on this motor. If you do Arun is going to shot you are him one here. Robert

Blitzkrieg

And you call me an instigator and trouble maker, shame on you Robert, I'm trying really hard lately to be kind and nice, but you just love to try and get me all fired up! Not happening this time buddy!

breecher_7

Still waiting on a definitive combustion chamber size on these things...

Arun@Dasilvamotorsports

I will be taking them in this weekend to get the chambers CC'd and heads flowed as they come from the factory.

The chamber is 4.070 wide-so it definitely needs a 4.00" or bigger bore-thank goodness it doesn't matter for us FI guys who are forcing the air in.

The stock intake valves are NOT hollow stem on the LSA heads-and there heavy, 120 grams for a 2.16 valve.

I'm going to upgrade to hollow stem intakes and just reuse the stock exhausts.

The springs of course are going to be BTracing duals.

The chamber finish is silky smooth-something Brian spent alot time doing on my TFS 245's.

I'll keep everyone updated with some more pics soon as well.

robert miller

Clown it is to late in the year now to get a christmas gifts from any one in here. Plus the wifey said you sure wasnt getting nothing at home... Robert

Arun@Dasilvamotorsports

Some chamber pics.

I already have a cam picked out for these heads.

breecher_7

I'm thinking Manley hollow stem intakes and inconel exhausts. I am definitly interested in the results here.

a/c man

70 cc for the stock LS3 heads, not sure if the LSA is the same? that will change with the valves you choose spark plugs too make a differance in CCs I still have all my stuff to fun CC checks on heads! its fun


the surface looks used or sanded I can see where a gasket was on them but the chambers look new? have you been mocking up these heads Arun

madmatt9471

Thanks,Matt

Vert_Fan

Louis did some interesting work over on LS1Tech....

http://ls1tech.com/forums/forced-ind...-inside-2.html

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