swapping 853 to 241 got some ????
12-05-2006, 09:07 AM
#1
TECH Resident
Thread Starter
iTrader: (24)
Join Date: Oct 2004
Location: Ft lewis,Ft sill and thats all i hope.Katy texas
Posts: 839
Likes: 0
Received 0 Likes
on
0 Posts
swapping 853 to 241 got some ???? Ok to make sure i got everything right!!!!! When i swap the 853 with the 241 what all will i need
99+ style valve covers
99+ coil pack brackets
valve cover bolts
valve cover gaskets
head gaskets
prob gonna go with arp head studs what do you think?????
Now here in the future will this beneficial for me when i do a cam swap??? Cause i am hearing 853's just suck!!!!
thanks for the help
evan
99+ style valve covers
99+ coil pack brackets
valve cover bolts
valve cover gaskets
head gaskets
prob gonna go with arp head studs what do you think?????
Now here in the future will this beneficial for me when i do a cam swap??? Cause i am hearing 853's just suck!!!!
thanks for the help
evan
12-05-2006, 09:12 AM
#2
Registered User
iTrader: (15)
Join Date: Aug 2005
Location: BTR, La
Posts: 1,363
Likes: 0
Received 0 Likes
on
0 Posts
853's don't suck they're right behind 241s by a SMALL margin.
Did you mean to say 806 heads? That's what would have been on your 1998 from the factory if they weren't changed.
Ben T.
Did you mean to say 806 heads? That's what would have been on your 1998 from the factory if they weren't changed.
Ben T.
12-05-2006, 10:26 AM
#4
12 Second Club
iTrader: (11)
Join Date: Jan 2005
Location: NC, Charlotte / SC, RockHill
Posts: 1,191
Likes: 0
Received 0 Likes
on
0 Posts
sorry, but really not worth the swap if u currently have the 853 castings.
3-6 rwhp is absolutley not the gain u want, keep them or atleast get a 243 casting.
3-6 rwhp is absolutley not the gain u want, keep them or atleast get a 243 casting.
12-05-2006, 01:01 PM
#5
TECH Enthusiast
iTrader: (51)
Join Date: Apr 2006
Location: socal
Posts: 641
Likes: 0
Received 0 Likes
on
0 Posts
I swaped out my 241 for a set of 853 ported heads and everything bolted up perfect. The only thing i had to change was the head gaskets. I had to buy the composit gaskets because of the "notch" in the heads. Other than that your 853 heads should be center bolt for the valve covers. I think you are mistaken as to the casting # the 806 has the perimiter bolts. Then yes you would need new valve covers and coil brackets.
12-05-2006, 01:23 PM
#6
TECH Resident
Thread Starter
iTrader: (24)
Join Date: Oct 2004
Location: Ft lewis,Ft sill and thats all i hope.Katy texas
Posts: 839
Likes: 0
Received 0 Likes
on
0 Posts
ah sorry i was wrong, it must be the 806's and yes it is worth it cause i only spent 200 bucks for 0 mile heads.. I didnt want to for over 1200 plus for the ported ls6's
12-05-2006, 01:27 PM
#7
TECH Resident
Thread Starter
iTrader: (24)
Join Date: Oct 2004
Location: Ft lewis,Ft sill and thats all i hope.Katy texas
Posts: 839
Likes: 0
Received 0 Likes
on
0 Posts
how significant of a gain will it be from 806 to 241 since i am a retard and thought they were 853 on 98!!!!
Trending Topics
12-05-2006, 01:47 PM
#8
TECH Enthusiast
iTrader: (51)
Join Date: Apr 2006
Location: socal
Posts: 641
Likes: 0
Received 0 Likes
on
0 Posts
Like was said above probably most 10hp. You should get those ported or do it your self, mill them and you will see better gains of 20hp or more with a cam to complement it.
12-05-2006, 03:03 PM
#9
12 Second Club
iTrader: (11)
Join Date: Jan 2005
Location: NC, Charlotte / SC, RockHill
Posts: 1,191
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by Ws6man2000
ah sorry i was wrong, it must be the 806's and yes it is worth it cause i only spent 200 bucks for 0 mile heads.. I didnt want to for over 1200 plus for the ported ls6's
as for gains from 806 to 241 you will see no more than 10-12rwhp
12-05-2006, 03:51 PM
#10
Registered User
iTrader: (15)
Join Date: Aug 2005
Location: BTR, La
Posts: 1,363
Likes: 0
Received 0 Likes
on
0 Posts
Get them milled .030" and you'll see some better gains. Everything will bolt-up fine, only you'll have more compression.
ARP head studs? They would not be necessary, but probably wouldn't hurt. Stock GM head bolts probably wouldn't be a bad choice either @ $25/set.
What size cam are you running?
Ben T.
ARP head studs? They would not be necessary, but probably wouldn't hurt. Stock GM head bolts probably wouldn't be a bad choice either @ $25/set.
What size cam are you running?
Ben T.
12-05-2006, 04:43 PM
#11
Originally Posted by prostock_bigblock
you still can find stock 243s used starting from 380$-500$ and they give u atleast 15-30rwhp untouched.
12-05-2006, 07:10 PM
#12
12 Second Club
iTrader: (11)
Join Date: Jan 2005
Location: NC, Charlotte / SC, RockHill
Posts: 1,191
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by Gunnar@Patriot
Actually we can do a set of brand new 243 castings assembled with oem parts for $425.00 per pair.
12-06-2006, 08:14 AM
#15
Originally Posted by Beaflag VonRathburg
Damn, when did this deal come out or is this a one time thing?
We can do this for awhile. We have several of these new castings in stock.
12-06-2006, 01:42 PM
#18
TECH Resident
Thread Starter
iTrader: (24)
Join Date: Oct 2004
Location: Ft lewis,Ft sill and thats all i hope.Katy texas
Posts: 839
Likes: 0
Received 0 Likes
on
0 Posts
i plan on torq v2 but not sure yet???? Also ill prob just stick with the 241 unless someone wants a brand new set???? Who does good head work for a decent price????
Last edited by Ws6man2000; 12-06-2006 at 01:47 PM. Reason: need to add more info