tfs A460 vs kaase super cobra jet

Page 1 of 2 1, 2  Next

Go down

tfs A460 vs kaase super cobra jet

Post  v-twin on October 14th 2013, 2:38 am

what would be the hp difference ,I have super cobra jet kaase heads on a 521. I need to change my cam and piston anyway I go because the ones in my motor are low compression 9.6..I think 14.5 compression more cam ,new 100 longer valves so I can go up on cam lift, Should net 100 more hp , current cam is comp 726 lift 268 276 dur. Or go with tfs A head......Car runs 8.93 - 152 1/4 5.78 122 1.8 at bristol 400 shot
avatar
v-twin

Posts : 52
Join date : 2012-02-15
Age : 70
Location : johnson city,tennessee

View user profile

Back to top Go down

Re: tfs A460 vs kaase super cobra jet

Post  dfree383 on October 14th 2013, 2:43 am

on equal engine's the A460 stuff will make 100 more HP +/-, The boss stuff is similar.
avatar
dfree383
BBF CONTRIBUTOR
BBF CONTRIBUTOR

Posts : 14118
Join date : 2009-07-09
Location : Home Wif Da Wife.....

View user profile

Back to top Go down

Re: tfs A460 vs kaase super cobra jet

Post  rmcomprandy on October 14th 2013, 10:06 am

v-twin wrote:what would be the hp difference ,I have super cobra jet kaase heads on a 521. I need to change my cam and piston anyway I go because the ones in my motor are low compression 9.6..I think 14.5 compression more cam ,new 100 longer valves so I can go up on cam lift, Should net 100 more hp , current cam is comp 726 lift 268 276 dur. Or go with tfs A head......Car runs 8.93 - 152 1/4    5.78 122 1.8 at bristol   400 shot
That engine size is right at the point where ported SCJ's run out and the A460 heads come on so, more RPM is needed to make more power and a lighter valve train, (at least on the intake side), may be necessary with the A460's ... done right, they will make considerably more horsepower with about the same torque.

rmcomprandy

Posts : 5086
Join date : 2008-12-02
Location : Roseville, Michigan

View user profile http://www.rmcompetition.com

Back to top Go down

Re: tfs A460 vs kaase super cobra jet

Post  v-twin on October 15th 2013, 2:04 pm

thanks for the info So my scj kaase heads are about done? I'm running 9.90's at Bristol which would be 8.60's anywhere else, Not counting Denver. I need 4 more tenth's. How much would compression help? I have 9.6 now
avatar
v-twin

Posts : 52
Join date : 2012-02-15
Age : 70
Location : johnson city,tennessee

View user profile

Back to top Go down

Re: tfs A460 vs kaase super cobra jet

Post  dfree383 on October 15th 2013, 2:51 pm

It will definitely help.

Whats the rest of the combo?
avatar
dfree383
BBF CONTRIBUTOR
BBF CONTRIBUTOR

Posts : 14118
Join date : 2009-07-09
Location : Home Wif Da Wife.....

View user profile

Back to top Go down

Re: tfs A460 vs kaase super cobra jet

Post  v-twin on October 15th 2013, 3:05 pm

521 ci diamond -36cc pistons, scat 4.300 stroker from aw brown. comp cam 726 lift 268 276 108 center 108 lobe Kaase cobra jet smoothed out and gasket ported, tci c6 4500 converter by ultimate, NX plate. For sale make offer
avatar
v-twin

Posts : 52
Join date : 2012-02-15
Age : 70
Location : johnson city,tennessee

View user profile

Back to top Go down

Re: tfs A460 vs kaase super cobra jet

Post  dfree383 on October 15th 2013, 3:07 pm

Get it up to 13-14:1 and get a proper no2 cam it will be worth a bunch of power.
avatar
dfree383
BBF CONTRIBUTOR
BBF CONTRIBUTOR

Posts : 14118
Join date : 2009-07-09
Location : Home Wif Da Wife.....

View user profile

Back to top Go down

Re: tfs A460 vs kaase super cobra jet

Post  psfracer on October 15th 2013, 3:34 pm

v-twin wrote:thanks for the info   So my scj kaase heads are about done? I'm running 9.90's at Bristol which would be 8.60's anywhere else, Not counting Denver. I need 4 more tenth's. How much would compression help? I have 9.6 now
What makes that track so bad?  1.3 seconds?  Really?  EDIT--oh nevermind, I see in other posts your running 8.90s.

v-twin wrote: 521 ci diamond -36cc pistons, scat 4.300 stroker from aw brown.  comp cam 726 lift 268 276   108 center 108 lobe Kaase cobra jet smoothed out and gasket ported, tci c6 4500 converter by ultimate,  NX plate.    For sale make offer
-3.6cc maybe?   I think like already said you bump up the compression to at least 13 to 1, go with a more aggressive cam, that will get you the 4/10ths I would think. But, if its in the budget, and you are changing pistons anyway, might as well step up to an A460 head. I had a buddy of mine build a very similar motor to what I did, but he used an A460 head and I used the P51. I have more compression, (16:1 vs 14:1) but he has more cubes (572 vs 598) but he made about 80 more horsepower.
avatar
psfracer

Posts : 774
Join date : 2010-10-22
Location : Valencia, CA

View user profile http://www.psfracer.com

Back to top Go down

Re: tfs A460 vs kaase super cobra jet

Post  richter69 on October 15th 2013, 3:44 pm

P 51's are junk...............Razz 
avatar
richter69

Posts : 13645
Join date : 2008-12-02
Age : 47
Location : In the winners circle

View user profile

Back to top Go down

Re: tfs A460 vs kaase super cobra jet

Post  psfracer on October 15th 2013, 3:47 pm

I know. Cool 
avatar
psfracer

Posts : 774
Join date : 2010-10-22
Location : Valencia, CA

View user profile http://www.psfracer.com

Back to top Go down

Re: tfs A460 vs kaase super cobra jet

Post  v-twin on October 15th 2013, 4:13 pm

Correction 9.90's on motor 8.90's NX nos 1.278 sixty 5.71 122 1/8 the air is bad here " 3900" my 521 was intended for a 1953 for f-100 street only. No p51 are not junk, he is full of his self . Ben reading about your car for 2 years now, great car.
avatar
v-twin

Posts : 52
Join date : 2012-02-15
Age : 70
Location : johnson city,tennessee

View user profile

Back to top Go down

Re: tfs A460 vs kaase super cobra jet

Post  dirt_worker on October 15th 2013, 4:14 pm

Lots of factors goin on here but after having p51s and now aheads I think the answer is clear. Just make the jump to aheads now....I guarantee you won't regret it.

I wish id just bought them to begin w actually....(so will fabio when he finally sees the light)







avatar
dirt_worker

Posts : 535
Join date : 2009-04-03

View user profile

Back to top Go down

Re: tfs A460 vs kaase super cobra jet

Post  v-twin on October 15th 2013, 4:22 pm

Talked to Oakley today, Going Ahead for sure. So all my 521 stuff for sale
avatar
v-twin

Posts : 52
Join date : 2012-02-15
Age : 70
Location : johnson city,tennessee

View user profile

Back to top Go down

Re: tfs A460 vs kaase super cobra jet

Post  IDT-572 on October 15th 2013, 5:04 pm

A heads..............Twisted Evil 
avatar
IDT-572
BBF CONTRIBUTOR
BBF CONTRIBUTOR

Posts : 4598
Join date : 2008-12-02
Age : 57
Location : Shelbyville Tn.

View user profile

Back to top Go down

Re: tfs A460 vs kaase super cobra jet

Post  yellowhorse7 on October 15th 2013, 6:04 pm

richter69 wrote:P 51's are junk...............Razz 
Got that right
avatar
yellowhorse7

Posts : 1382
Join date : 2009-11-16
Age : 92
Location : Polk County

View user profile

Back to top Go down

learning

Post  mikey hefner on October 15th 2013, 8:45 pm

I'm still learning, so which TFS A heads are you guys refering too?

mikey hefner

Posts : 79
Join date : 2012-05-24

View user profile

Back to top Go down

Re: tfs A460 vs kaase super cobra jet

Post  v-twin on October 15th 2013, 9:13 pm

I'm thinking new A360 which needs 4.600 bore so stock block should no go that big.
avatar
v-twin

Posts : 52
Join date : 2012-02-15
Age : 70
Location : johnson city,tennessee

View user profile

Back to top Go down

Re: tfs A460 vs kaase super cobra jet

Post  v-twin on October 15th 2013, 9:55 pm

what's not junk? trick flow has problems to, do you want to talk about rocker studs breaking the head? Drop the compression to 9.6 with small bore and use pump gas and see which is junk
avatar
v-twin

Posts : 52
Join date : 2012-02-15
Age : 70
Location : johnson city,tennessee

View user profile

Back to top Go down

Re: tfs A460 vs kaase super cobra jet

Post  windsor on October 15th 2013, 11:04 pm

It's an inside joke. The guy that said they're junk runs them and likes them. He was being sarcastic. Lot of that in here.

They're good heads but I think everyone is in concurrence if you need new pistons anyway, go with the a460.
avatar
windsor

Posts : 1116
Join date : 2009-08-09
Location : St. Pete/Northern Va.

View user profile

Back to top Go down

Re: tfs A460 vs kaase super cobra jet

Post  richter69 on October 15th 2013, 11:13 pm

IDT-572 wrote:A heads..............Twisted Evil 

I may just skip the A heads when the time comes and do a C.........
avatar
richter69

Posts : 13645
Join date : 2008-12-02
Age : 47
Location : In the winners circle

View user profile

Back to top Go down

Re: tfs A460 vs kaase super cobra jet

Post  cool40 on October 15th 2013, 11:18 pm

richter69 wrote:
IDT-572 wrote:A heads..............Twisted Evil 
I may just skip the A heads when the time comes and do a C.........
Baller........Razz 
avatar
cool40
BBF CONTRIBUTOR
BBF CONTRIBUTOR

Posts : 7150
Join date : 2009-08-31
Age : 47
Location : on the 1/8 mile dyno

View user profile

Back to top Go down

Re: tfs A460 vs kaase super cobra jet

Post  richter69 on October 15th 2013, 11:37 pm

dont worry, i gotta run this junk for another season or two........ budget baller..........
avatar
richter69

Posts : 13645
Join date : 2008-12-02
Age : 47
Location : In the winners circle

View user profile

Back to top Go down

Re: tfs A460 vs kaase super cobra jet

Post  v-twin on October 15th 2013, 11:47 pm

Okay the jokes on me. I'm glad some one besides me is running these heads. youtube Bristol 2013 mustang wheelie bounce
avatar
v-twin

Posts : 52
Join date : 2012-02-15
Age : 70
Location : johnson city,tennessee

View user profile

Back to top Go down

Re: tfs A460 vs kaase super cobra jet

Post  dfree383 on October 16th 2013, 12:34 am

yellowhorse7 wrote:
richter69 wrote:P 51's are junk...............Razz 
Got that right
Yep......lol! 
avatar
dfree383
BBF CONTRIBUTOR
BBF CONTRIBUTOR

Posts : 14118
Join date : 2009-07-09
Location : Home Wif Da Wife.....

View user profile

Back to top Go down

Re: tfs A460 vs kaase super cobra jet

Post  windsor on October 16th 2013, 8:44 am

dfree383 wrote:
yellowhorse7 wrote:
richter69 wrote:P 51's are junk...............Razz 
Got that right
Yep......lol! 
Especially with a hydraulic roller.
avatar
windsor

Posts : 1116
Join date : 2009-08-09
Location : St. Pete/Northern Va.

View user profile

Back to top Go down

Page 1 of 2 1, 2  Next

Back to top


 
Permissions in this forum:
You cannot reply to topics in this forum