88 350 tpi formula
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May 30, 2026
no longer avail
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Do they come with the non bent valves? Where in wisconsin are you located? I'm in new berlin a suburb of milwaukee. I'm interested.
lmk,
Thanks,
Kory
lmk,
Thanks,
Kory
Quote:
the buyer will need the machine shop to redrill and press in a new guide. you will want this done when you install the valves since it means cutting the seat to match the guide.
below are the springs that caused the failure and pictures of the head for those interested
you have to look close to even see the crack but its there and the reason I had it welded. I Will post pictures of the now welded spot once I go back into the attic. I had some pictures but I just cant find them.
these are 241 castings that have no marking giving away they have been CNCed or any work was done
setup for 2.02 intake valves
this is the flow chart from when I purchased the heads
Int.
.200 - 140 cfm
.300 - 200 cfm
.400 - 247 cfm
.500 - 281 cfm
.600 - 290 cfm
Exh.
.200 - 110 cfm
.300 - 144 cfm
.400 - 180 cfm
.500 - 200 cfm
.600 - 220 cfm
Im looking for $200.00 or trades. I would rather do a local pick up since UPS likes to trash stuff
Originally Posted by 88 350 tpi formula
I have a set of CNCed LS1 "Sleeper" heads that had less than a few hundred miles on them. Long story short I was running these and due to some defective PAC Springs I bent a valve. The end result was a split in the valve guide and the lump at the guide. I had this welded up just to be safe but in the mean time I bought a new set of heads. the buyer will need the machine shop to redrill and press in a new guide. you will want this done when you install the valves since it means cutting the seat to match the guide.
below are the springs that caused the failure and pictures of the head for those interested
you have to look close to even see the crack but its there and the reason I had it welded. I Will post pictures of the now welded spot once I go back into the attic. I had some pictures but I just cant find them.
these are 241 castings that have no marking giving away they have been CNCed or any work was done
setup for 2.02 intake valves
this is the flow chart from when I purchased the heads
Int.
.200 - 140 cfm
.300 - 200 cfm
.400 - 247 cfm
.500 - 281 cfm
.600 - 290 cfm
Exh.
.200 - 110 cfm
.300 - 144 cfm
.400 - 180 cfm
.500 - 200 cfm
.600 - 220 cfm
Im looking for $200.00 or trades. I would rather do a local pick up since UPS likes to trash stuff
88 350 tpi formula
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May 30, 2026
nope no valves or springs these are a heck of a deal already
Senior Member
Quote:
No question. where are you located?Originally Posted by 88 350 tpi formula
nope no valves or springs these are a heck of a deal already Thanks,
Kory
88 350 tpi formula
Supreme Member
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May 30, 2026
I'm in Janesville WI just north of Beloit,
trade for what pm interested if you ship
Senior Member
Janesville isn't far from me. I could possibly come get them thursday. could you post a pic of the repaired area? also how many guides/seats have to replaced?
Thanks,
Kory
Thanks,
Kory
88 350 tpi formula
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May 30, 2026
here is the welded picture. you only need to have the one guide installed and the seat (cut/reground) as the machine shop says this is needed when a guide is replaced to insure the seat is true to the guide. once this is done some simple touch up with the dremel to cut down the weld to match the rest of the ports
so to clarify
you will need the machine shop to
1- drill and install one replacement guide then you or machine shop grinds the weld down to match the other ports
2- grind the seat as you would for a valve job
3- since you would be installing new valves it would basically be number 2
4- springs to match the cam your using
so to clarify
you will need the machine shop to
1- drill and install one replacement guide then you or machine shop grinds the weld down to match the other ports
2- grind the seat as you would for a valve job
3- since you would be installing new valves it would basically be number 2
4- springs to match the cam your using
88 350 tpi formula
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May 30, 2026
Quote:
I could ship but local pick up would get first dibs. Im not sure how we would trade with shipping though.Originally Posted by SiCkRs
trade for what pm interested if you ship I'm not really after anything too specific but I guess for others who may want to know as well.. lsx parts come to mind short of making a wish list
how much did the shop quote you to do the head work it needs?
88 350 tpi formula
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May 30, 2026
Quote:
Originally Posted by SiCkRs
how much did the shop quote you to do the head work it needs? honestly I forgot, it wasn't much it was harder to find a welder that was able to weld it and was willing to. I will ask them and let everyone know.
ok cool. thanks
88 350 tpi formula
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May 30, 2026
ok, what he said was I can figure on roughly $130.00 the guide bore probably will need to be reamed oversize for an over sized guide. fit the guide , recut the valve seat and blend the port back in
88 350 tpi formula
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May 30, 2026
sold pending payment