bigantws6

iTrader: (12)

I have a set of 243 getting worked on and was thinking if i should weld up the chamber to build up the compression like how ai does their 241 what are yall thought on it trying not mill as i will be running the ms3 cam .what are yall input on welding up the head

sbf

I've talked to ai about the same thing on my 317 and 243 heads they would be the only one I trust to do it

bigantws6

iTrader: (12)

Did u get ur welded up and have u had any issue

sbf

I got the 317s done no issues at all with them,I had them welded up to 64cc so actually now it's basically a 243 head without the price.now I have 11.0cr on my lq9

redtan

iTrader: (5)

sbf, how much did that run you from AI?

bigantws6

iTrader: (12)

I want to get the 243 to a 62cc to get me close to 11 on my 346 u dont have a pic u can post of how the head came out

mchicia1

iTrader: (5)

AI does it for $200

Awesome company. You can find 317s for $100. Tough to find even 799s now for under $450, so this is a good alternative. Forget about the ls6 heads, people basically think they're made out of gold now.

https://ls1tech.com/forums/16349411-post17.html

PREDATOR-Z

AI does a wonderful job. I use their 219 program on my 241s and I daily drive that setup supercharged. No issues due to welding and I'm at 11:1 (on my C5).
Yes I know it is a bit high for supercharger setup but I have a cam with a power-band and shift points in the 6200 rpm only running 7 psi boost Magnacharged.

Exidous

iTrader: (11)

Welding them is fine and AI is great. Any issue with the valve seat would be moot once the heads cooled back down from the welding. Most likely they do a little on each chamber. So that each chamber has 7 others to wait on between welding sessions.

sbf

I got cnc ported and btr springs along with welded chambers my total was around $1500

redtan

iTrader: (5)

That's not bad at all, considering most milling services run well over $100. And this is getting compression without affecting the head and without killing PTV.

Next time these heads come off, I'm getting them down to 58cc for some madd compression.

JakeFusion

iTrader: (7)

Welded up chambers are a good option. I have 241s sitting here that I've thought about sending off to AI for weld and port job (58cc chambers). I'm thinking of picking up another LS based vehicle as a daily and would use the AI heads on it.

nm2769

iTrader: (1)

I am in process of installing AI 5.3 heads that were welded up to 60cc without milling. Beautiful craftsmanship you can only tell were the weld is by a very slight color difference from the stock casting. Port work is almost to nice to hide inside the motor.

mchicia1

iTrader: (5)

I should send my bsp ls3 heads to them for this service. If I could get 11.5:1 compression out of those heads, what a difference.

Nwayne

iTrader: (3)

Any pics?

redtan

iTrader: (5)

Hmm that opens up more options though. I used to shy away from LS3 heads due to their big chambers and the fact that it would be tough to build compression on your typical flat top forged piston with -3 to -5 cc. But now that I know AI can weld other heads, I might pick up some cheap LS3s, do their basic valve job and exhaust porting work, weld up em to some high 50s ccs and boom you have a killer flowing head with high compression and lightweight valves.

mchicia1

iTrader: (5)

Ya, on the 5.7s and 6.0s, they don't even need port work either. You could have a pretty nice budget head.

bigantws6

iTrader: (12)

Alright guys thanks for all the info imma send the heads to get welded up to build up comp and the heads i got from a buddy that had them sitting around for $100 complete so i couldnt beat that deal

bigantws6

iTrader: (12)

Nm2769 you dont have pic

JakeFusion

iTrader: (7)

That's true with the LS3s. I would see if AI could weld them up and offer with the 2.08/1.60 valves that others offer for small bore ports. I bet AI could work with you on that as well.