JUICED01

iTrader: (10)

I am in the process of building a 408 with eagle h beam rods and eagle crank with trw dome pistons should be around 13.5. I plan on spraying it with 3-400 and would like to make somewhere around 900hp to the tire. Ishould add that hp goal is on spray.

racerfox

iTrader: (4)

depends on which intake you plan on also with your spray i would say either some WCCH 245s or PRC 237s

JUICED01

iTrader: (10)

I should have put it will be carbed i was thinkin a super vic but havent bought anything like that yet.

litle88

iTrader: (20)

Mast comes to mind! Tsp Ls7 small bore heads have a thick deck for some spray iirc. Just my .2

Ellesone

BUDGET??
Cant buy a head without knowing how much you have to spend on them including the valve train

COPO9560

AI's new TFS package looks pretty interesting and will not kill a budget.

slayer performance

iTrader: (4)

trick flow 235's

JUICED01

iTrader: (10)

Im not rich by no means but i wanna put the heads that needs to be on it.

LS6427

iTrader: (2)

You can't put big enough heads on a 408. Put the highest flowing heads money can buy....408ci will eat up anything there is on the market. If you put 400cfm heads on it.....then you put 430cfm heads on it you will make more power than the 400cfm heads.

So the best that "your" money can buy.....

If on a budget....I would use my builders ported L92's, they flow in the 365 range intake...and I think he has the exhaust flowing 270's. Can't remeber. But he's got a bunch of 408's and 416's around this area making 540 RWHP and nice smooth idles. Like $1,500 complete ready to install.

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ws6fitz

Look at TEA 335's!

Ellesone

you can spend from $1200 to $5500 on the heads alone and then add in the rockers, pushrods and lifters... You need to set a budget in order to get a good answer and make a good plan or you are going to be spending money you dont have. I can get AFR heads on the cheap and thats the way I would go if I were you.. best bang for the buck if you can get them for the right price.. if you have to spend more on them than I do it might njot be such a good deal for you... SO set a budget if you want the best advice on head choice...

Canada

iTrader: (2)

Your running higher compression than me but my 408 is built to spray the same amount. I went with some TEA TFS 235 with the nitrous ports. I'm at 11.1:1 compression. Luckily I already had jesel rockers so that saved some money.

JUICED01

iTrader: (10)

Thanks for all the info guys im not sure which head im going with yet, but this is the reason i made this post to get some much needed input.

Sales4@Texas-Speed

iTrader: (4)

This would be a great motor for our new PRC 247 aftermarket cathedral casting heads. Thick deck, 6 bolt design, big flow for big power. We have seen some pretty amazing results from a few customers with builds similar to this.

Take a look here:
http://www.texas-speed.com/p-3557-pr...der-heads.aspx

Ellesone

AFR MAST TEA would be my top 3 choices and not just in that order either

TVWilkes

I agree with the PRC 237's.

Canada

iTrader: (2)

I'm curious as to why you would say 247? When I was looking at heads for my build I had you guys do I went to TEA and they say dont go over a TFS 235 with a 4.030 bore. For something in the 245 range you need a bigger bore. Just curious as to why bc I did consider going up to the TEA TFS 245 but reading the bore required I settled for the 235.

Ellesone

and why would you choose them over say an AFR or MAST?

litle88

iTrader: (20)

Sorry I had mentioned the tsp small bore head but forgot you need a minimum of 4.065 bore. So I say Mast, just my.2 or a TFS HEAD ftw.

Sales4@Texas-Speed

iTrader: (4)

The 247 heads we do will fit on a 4.030" bore and for a max effort setup like this I feel they would do better. From what it seems this is more of a drag car. If it is a street car then the 237s would probably be better for a little more low end.