p51 vs. tfs a460 340-m-83

how much power would the a460s be over the pf1s and would the tfs be worth the header and piston changes. ? will our ford motorsport rocker arms work with the tfs also? got a killer deal on brand new in the box tfs with matching intake , valves included. 2.300 intake and 188 exaust. thanks

The P-51 heads will make 1000+ for sure, we all know that 0n a 588ci engine.From what i've read 10 more ci.would be about it's limit and then the A460 would then take over from there. A p51 can flow as much w/good port work as a TFS A460 stock. It depends how big and how fast you really want too go.And yes the roller rockers from standard head will work on A460 head.

we have a 521 , stock blk,which head would be best with the 4.39 bore ?,we have performer rpm,s that we home ported, 460 victor,1050 dommy,flat tops,a glide,4.88s,33.10.5s Car with my dad@3160 ran 9.24 at 144.and 5.88 at 117mph. at Gainesville .Backed haved with ladder bars,BigShot plate with 73n73f ,27degrees total. We know we need a better head to go faster,Let us know what ya thank?Thanks ,1970 Ford Maverick.

A 460 for the win

If you are set on staying w/.030 over bore,I would go w/p51. .080 and bigger,imo I would go w/A460.

Either one would work fine, but you can have the A's this week. I'm not sure of the back order status on the P's right now, but you could be in for quite a wait.

I'd revisit the whole combo, you in a similar position as Nick Bruno was several years ago.

1970 ford maverick wrote:we have a 521 , stock blk,which head would be best with the 4.39 bore ?,we have performer rpm,s that we home ported, 460 victor,1050 dommy,flat tops,a glide,4.88s,33.10.5s Car with my dad@3160 ran 9.24 at 144.and 5.88 at 117mph. at Gainesville .Backed haved with ladder bars,BigShot plate with 73n73f ,27degrees total. We know we need a better head to go faster,Let us know what ya thank?Thanks ,1970 Ford Maverick.

OK SOMETHING IS WRONG HERE, CAMSHAFT? That should not need that ratio

Cam is a Reed, Old solid lift,Here are the #266/272 - 647/653 - 110 - 2degrees retard,Thanks Again,1970Ford Maverick.

Have the Eddy's Gone Over By a Pro and get a Modern Roller Cam. That cam is way wrong by todays standards.

May also want to look at gearing and Convertor too.

The A460 are the bang for the buck.
These are the complete assemblied TFS package?

[/quote]No sir,Heads,valves,intake ,no springs or retainers.Thanks 1970 Maverick

Bang for the buck speaking...

I'd get the heads looked at by a pro and new roller cam matched to what you have along with possibly a gear and converter tweak... It'll be cheaper than a full change including heads. That old cam is hurting the combo IMO.

jbozzelle wrote:Bang for the buck speaking...

I'd get the heads looked at by a pro and new roller cam matched to what you have along with possibly a gear and converter tweak... It'll be cheaper than a full change including heads. That old cam is hurting the combo IMO.

Yes sir,we have been running all motor with the 4.88s,got 4.33s that is going in soon,So that we can get alittle more agressive with the nos tune,and we have a nice Solid Roller for the new heads when we decide which head were going with.,Still, we are ole school,and will keep on tweaking on the MAV.Thanks 1970 maverick.

What kind of RPM are you turning with 4.88s and a 33' tire? Are you geared for the 1/8 or 1/4?

have the heads you have ported and a cam matched to your combo and the converter, trans, gears, another words have what you got matched up not just a bunch of parts thrown together.....

jbozzelle wrote:What kind of RPM are you turning with 4.88s and a 33' tire? Are you geared for the 1/8 or 1/4?

Yes sir,we usally run 1/8,have 6000 rpm chip and was all on it at Gainesville.

I guess what some of us are trying to tell you is to have those heads checked out by a REPUTABLE shop who knows FORD heads. Those are good heads and WILL make big power when prepped right. Bruno has a set on his 562 with some spray and runs in the 8s.

Those heads and a matched cam should put you solidly in the 9s on motor alone... If it were my money I'd keep those heads, get a matched cam and tweak the gears/converter. Then start building another engine around A460s if that's the route you eventually want to go...

jbozzelle wrote:I guess what some of us are trying to tell you is to have those heads checked out by a REPUTABLE shop who knows FORD heads. Those are good heads and WILL make big power when prepped right. Bruno has a set on his 562 with some spray and runs in the 8s.

Those heads and a matched cam should put you solidly in the 9s on motor alone... If it were my money I'd keep those heads, get a matched cam and tweak the gears/converter. Then start building another engine around A460s if that's the route you eventually want to go...

Thanks for your advice,we agree with you too.Heres the scoop, We have been talking with a friend about his brand new a-460s ,valves,and matching intake , A DEAL that i can,t let pass.Though we really want p51s,One,because of the headers and two,we were thinking we could get a pair soon?Thanks,1970 maverick.

if your gona spray,A460's would be my choice.

Is this a front halfed deal? what headers? Car weight? ET goals?

richter69 wrote:Is this a front halfed deal? what headers? Car weight? ET goals?

Yes sir on the front half,Home made, car weight 3160 with driver,550s-570s in the 1/8 on motor.

A rockin set of P51's will get you there, a set of TFS A460's will and some, I'd think the smaller cube might like the P51 better. I guess if your gonna buy pistons, valvetrain etc you'd be better off the A460 route. The p51/ Mafia intake package will be lighter. Only strike I really see against the A460 package is the smaller bore.............but it can work. Clear as mud lol.

I declare BULLSHIT.........A460...in any bore . Max to Max...seems the out of the box a460 stuff is being compared to mega $ P51 stuff

Lem Evans wrote:I declare BULLSHIT.........A460...in any bore . Max to Max...seems the out of the box a460 stuff is being compared to mega $ P51 stuff

We could go another 30over,can we get these #s with flat tops ,solid roller and the 4.30s with the A,s?,.Thanks 1970 Maverick.