Wondering how different lsx heads are to port compared to other non ls heads. There is a local shop that does excellent port work on sbc, bbc, fox's, etc and had nice flow numbers on the first set of 243's they did, but have not seen track/dyno results from the heads. Is it that different or not really? They flowed over 300cfm at 600 and will be into the heads for under a grand.

 

anyone?

 

What shop you looking at? Standard? I can't answer your questions, but I am looking at getting my 243's ported and milled sometime soon.

 

I'd have to go look up the numbers but IIRC my P+P LS6 heads flowed right at 295 @ 600.

 

If they can do decent SBF heads, they should be able to do a decent set of LSx heads. LSx heads aren't like SBC heads, and probably shouldn't be ported as such.

 

yea they can do very good sbf heads. Actually all there racecars they own are fords for the most part

 

All I an say is that I have fought this fight and I was very disappointed with the heads and performance of my heads when they where done. the guy is very good with SBC heads but he had little experience with the LSx heads. Again you can do what you want but it can always come back bite you in the *** and spend way more. Have the heads shipped to TEA, AI or any reputable shop that has a good track record with LSx heads.

 

^^^ this....

You either have to be talking about standard or Baskos, Both I think are around $500 ported with a vj and mill. Most I would ever let either do is a vj and mill for compression. From every porting pro I have spoken to these cathy port heads are definately way different than anything else, lots of r and d to figure out why GM engineered them the way they did and how to make improvements that actually work vs just hogging em out. Having a hard time deciding whether or not to have either standard are baskos do a 5 angle and deck for 300ish. Or just have B&B do a three angle and mill em for 150ish. Any insights?

 

I was recomended to Standerd by several people, but yea, I would like more insite on porting and milling as well.

 

Flow numbers are one thing, performance is another.

 

Indeed, any advice on whether or not to spend the extra cash on the five angle vs the three.

 

depends on the angles? I use 5 if you add the back cut on the valve.

 

yes standard is who would be porting them