Jantzer Performance head specs/feedback??
03-02-2004, 08:40 PM
#1
Jantzer Performance head specs/feedback?? Anyone deal with this shop? Paging Scott - do you remember these heads from upstate NY traded for wheels?I have option to buy a set of heads ported and flowed by Jantzer.
New #241 castings
New LS6 valves
New Rev 1116 springs 135lb@1.800"
New titanium retainers
GM seals and locks
Only flow numbers I have are from an email:
"wow! these came out better than I hoped - got
270cfm at .450",
285cfm at .500" and peaked at
296cfm at .580" lift!"
My questions are:
what cc/compression/year are #241 castings?(stock 5.7 going onto)
What size/material are LS6 valves?
Does this pair of heads seem like a good street head with a TR224/112 .563" cam? Stock LS6 intake with Jethot long tubes?
New #241 castings
New LS6 valves
New Rev 1116 springs 135lb@1.800"
New titanium retainers
GM seals and locks
Only flow numbers I have are from an email:
"wow! these came out better than I hoped - got
270cfm at .450",
285cfm at .500" and peaked at
296cfm at .580" lift!"
My questions are:
what cc/compression/year are #241 castings?(stock 5.7 going onto)
What size/material are LS6 valves?
Does this pair of heads seem like a good street head with a TR224/112 .563" cam? Stock LS6 intake with Jethot long tubes?
Last edited by chief455; 03-02-2004 at 11:47 PM.
03-03-2004, 06:54 PM
#5
Jantzer98SS is his screen name...
241 heads are 2002 LS1 heads, and are generally accepted to be the best (stock) flowing 5.7 head to date....
I think those are good, "real world" numners, and should be a good match for that cam. I know he ran 10s with a set of his own ported heads, so he evidentaly knows what he is doing....
Good luck, Shawn
241 heads are 2002 LS1 heads, and are generally accepted to be the best (stock) flowing 5.7 head to date....
I think those are good, "real world" numners, and should be a good match for that cam. I know he ran 10s with a set of his own ported heads, so he evidentaly knows what he is doing....
Good luck, Shawn
03-03-2004, 06:56 PM
#6
I know his car ran mid 10's two years ago with heads he ported. That's was most impressive then. Terry Burger with a MMS LS6 set up making 450rwhp might have had ~ 1/10 on him in the 1/4 then again Terry might not have.
His screen name is Jantzer98SS and he is a sponsor and has a link to his website >>>>>>
I'm getting a ported TB from him.
His screen name is Jantzer98SS and he is a sponsor and has a link to his website >>>>>>
I'm getting a ported TB from him.
03-03-2004, 11:20 PM
#7
Cool guys - thanks for the words! I tried emailing the sponsor link >>>>>
but got no reply.
Anyway - these are ready to use and I don't have to wait. That's worth alot. Also I was concerned about getting the exhaust side up to par with the intake, but with the credentials you mention sounds safe these heads are ported decent.
The numbers are equal to most sponsors advertised "Stage II" heads that run $1800 - and I'm looking at about $800 less than that, no core, no wait. I'm thinking they are a good deal.
thanks again
but got no reply.
Anyway - these are ready to use and I don't have to wait. That's worth alot. Also I was concerned about getting the exhaust side up to par with the intake, but with the credentials you mention sounds safe these heads are ported decent.
The numbers are equal to most sponsors advertised "Stage II" heads that run $1800 - and I'm looking at about $800 less than that, no core, no wait. I'm thinking they are a good deal.
thanks again