Ok Did lots of searching: what to do with my 243's???
04-14-2010, 01:44 PM
#1
Teching In
Thread Starter
iTrader: (2)
Join Date: Nov 2005
Location: scottsdale AZ/ Flint Michigan
Posts: 28
Likes: 0
Received 0 Likes
on
0 Posts
Ok Did lots of searching: what to do with my 243's??? So my GTO has ARH 1 3/4" LT's and GM hotcam with SLP 1.8rr's. I bought a set of ls2 243 heads, and although I cant afford to get them ported I figured after much searching that a good valve job is worth 20-30cfmish. This combined with a milling to get down to around 60ishcc chambers and 11:1 scr with a GM MLS gasket should be the way to go. Any thoughts on this? Should I just clean em up and run em as is or mill and vj? They have ~15k miles...
Does this sound like a solid plan, shoud I have a shop here local do the five angle and milling for around $300ish or go to another well respected shop that will do the milling and a three angle vj for around $150? Is it worth twice the amount for the additional work in the vj? These guys are the stereotypical local sbf/sbc heros etc that we always here about on here, which is why I wont let them touch the ports. However they claim to have done a few lsx heads and have flowbench numbers on them claiming 300cfm at .600 lift. Either way only poeple touching my heads would be tea, ai, wcch, etp, etc.... But that is the five angle people so I hope they know what they are doing with the vj. The three angle people I know have built a lot of modular ford stuff and 4g63's etc. I just don't know how familiar they are with lsx heads and what angles work with them...
Also Getting a pushrod checker, but anyone car to ballpark my pushrod length with ls7 lifters, a hotcam (supposedly stock base circle), and milled 243 heads (prolly bout 30 thou)
Ok now im rambling so Ill let you expert chime in here.
Thanks
Bijan
Does this sound like a solid plan, shoud I have a shop here local do the five angle and milling for around $300ish or go to another well respected shop that will do the milling and a three angle vj for around $150? Is it worth twice the amount for the additional work in the vj? These guys are the stereotypical local sbf/sbc heros etc that we always here about on here, which is why I wont let them touch the ports. However they claim to have done a few lsx heads and have flowbench numbers on them claiming 300cfm at .600 lift. Either way only poeple touching my heads would be tea, ai, wcch, etp, etc.... But that is the five angle people so I hope they know what they are doing with the vj. The three angle people I know have built a lot of modular ford stuff and 4g63's etc. I just don't know how familiar they are with lsx heads and what angles work with them...
Also Getting a pushrod checker, but anyone car to ballpark my pushrod length with ls7 lifters, a hotcam (supposedly stock base circle), and milled 243 heads (prolly bout 30 thou)
Ok now im rambling so Ill let you expert chime in here.
Thanks
Bijan
Trending Topics
04-14-2010, 08:29 PM
#8
PM paint it black on here. He's always giving out pretty accurate info and I've seen him say before that he can recommend some good guys for head work. For the right job, I'd be willing to ship them out. Post up what you decide on, you're going the same route with heads that I am.
04-15-2010, 05:08 AM
#10
There are only a couple of places I would trust with 243's, and the cost is nowhere near what you are quoting (it would cost more for a good quality job). If the ship doesn't have a good sound history with LSx heads, personally I would just lap in the valves and install the heads as delivered from GM. The wrong work can actually decrease performance.
04-15-2010, 05:23 PM
#12
12 Second Club
iTrader: (10)
Join Date: Jan 2009
Location: 5.0
Posts: 1,302
Likes: 0
Received 0 Likes
on
0 Posts
i would clean up the valve bowls, rocker bolt bulge, and valve guides with a homeport kit send them out for a VJ and mill.
doing that **** yourself you can hardly mess up by following the pics everyone posted here. as long as you dont try to change port shape, remember that your just "CLEANING" the obvious **** as mentioned, and the less material you take out of the port the better, you'll be fine.
go with a LSX shop to do the machine work.
doing that **** yourself you can hardly mess up by following the pics everyone posted here. as long as you dont try to change port shape, remember that your just "CLEANING" the obvious **** as mentioned, and the less material you take out of the port the better, you'll be fine.
go with a LSX shop to do the machine work.
Last edited by disc0monkey; 04-15-2010 at 05:29 PM.
04-16-2010, 07:44 AM
#16
TECH Fanatic
There are only a couple of places I would trust with 243's, and the cost is nowhere near what you are quoting (it would cost more for a good quality job). If the shop doesn't have a good sound history with LSx heads, personally I would just lap in the valves and install the heads as delivered from GM. The wrong work can actually decrease performance.
You can always have more work done later if you still need more power and after you find the right shop.
FWIW, I don't understand why folks want to keep very specific stuff like a great valve job on LS heads "local", if the best work isn't done in their locality. The shipping costs are usually cited as a reason. So to save a few twenties, you give up lots of power?? Sorry, but that sounds like bad economics to me.
Jon
04-16-2010, 07:47 AM
#17
TECH Fanatic
There are only a couple of places I would trust with 243's, and the cost is nowhere near what you are quoting (it would cost more for a good quality job). If the shop doesn't have a good sound history with LSx heads, personally I would just lap in the valves and install the heads as delivered from GM. The wrong work can actually decrease performance.
You can always have more work done later if you still need more power and after you find the right shop.
FWIW, I don't understand why folks want to keep very specific stuff like a great valve job on LS heads "local", if the best work isn't done in their locality. The shipping costs are usually cited as a reason. So to save a few twenties, you give up lots of power?? Sorry, but that sounds like bad economics to me.
Jon
GMI '66
Bijan, when I noticed the Scottsdale/Flint co-addresses it just had to be Kettering. Where do you co-op?