whats better 241's or 853's or 317's
#1
Launching!
Thread Starter
iTrader: (19)
Join Date: Aug 2012
Location: wellston ohio
Posts: 248
Likes: 0
Received 0 Likes
on
0 Posts
whats better 241's or 853's or 317's
wondering whats the best stock heads to get,i have 806's i just wanted to put center bolt heads on my car and a small cam with headers and a 3500 stall,wanted info on what stock heads are the best,obviosly 243's and 799's are better but i wanted a cheap pair
#4
11 Second Club
iTrader: (6)
Join Date: Feb 2005
Location: middle of nowhere, Kansas
Posts: 1,309
Likes: 0
Received 2 Likes
on
2 Posts
I also vote for 243/799 heads, although if you can get 317 heads (aka 6.0 heads) cheap enough they flow about the same as 243. The main difference with the 317 is much larger combustion chambers, but if you mill the heads .025" to .030" then they would be close to 64cc.
#7
i have a set of ported 241 heads with brand new valves with a 3 angle valve job. had the guides checked they all looked great. heads have 30k miles total on them. and 0 since i just have them ported and polished and resurfaced with new valves. will let them go cheap if your interested
Trending Topics
#8
11 Second Club
iTrader: (1)
I remember a vendor here saying they put the same CNC ports into 243s and 317s and milled the 317 to the same chamber volume and on the dyno there was a 20hp difference still. It would be interesting to really know if the milling hurt the flow or if the chamber just has bad flame travel or what but those are pretty technical things to study and would take an OEM budget to really figure out.
I know the dyno is not the only measure but 20hp isn't a small anomaly.
If someone has it bookmarked please post, or hell if someone has seen a different result please post that.
If milled 317s were truely 243 equivalent I think we would see vendors offering it more.
I know the dyno is not the only measure but 20hp isn't a small anomaly.
If someone has it bookmarked please post, or hell if someone has seen a different result please post that.
If milled 317s were truely 243 equivalent I think we would see vendors offering it more.
#9
Launching!
Thread Starter
iTrader: (19)
Join Date: Aug 2012
Location: wellston ohio
Posts: 248
Likes: 0
Received 0 Likes
on
0 Posts
i have a set of ported 241 heads with brand new valves with a 3 angle valve job. had the guides checked they all looked great. heads have 30k miles total on them. and 0 since i just have them ported and polished and resurfaced with new valves. will let them go cheap if your interested