bmf5150

I'm going to upgrade my 68 camaro ls1 to a ls3 418 and I have a kenne bell that requires me to stick with cathedral heads..so what are the best cathedral heads for a 418??

6D9 Matt

Any type of budget? No budget at all, Id prob go Mast.

bmf5150

No real budget would like to keep stock rocker arms if possible!

427zm

iTrader: (9)

LS7 small bores. Make sure to stay with TI intake valves, and make sure to use lash caps on the valve heads! You'll still be able to run your stock rockers w/ trunnion upgrade. This set will run you 3k. Just my .02.

Edit: just saw you said cathedral port. Boy, if I had the bore size, I use the rectangular ports in a second!

bmf5150

427zm that's the head I would choose to use but my intake on my kenne bell will only work with cathedral heads!

dkrowner

iTrader: (6)

mast 245's or 275's,afr 245,prc 247's are what i'm looking at rightnow and trying to figure out if the 1000+ price+ difference is really worth the few extra hp on a aps tt street car

bmf5150

Ok thanks!!!wonder if I can find some one to make me a new lower intake for my kenne bell to match up ls7 ports?

lil john

I sent you something earlier but I'll say this for the amount your going to pay with Custom sheet metal lower intake at a MIN. 3 thousand dollars you still have to buy........ heads......that's another 3 grand ....Keep it Simple, get good set of heads TFS 235-245 will probably be your best bet, they just seem to always perform great no matter what the build F/I.....N/A...etc... you'll have extra $$$$$(from not buying the lower intake) to buy all the good stuff to boot Valves,rockers-arms,..etc.

Blackpanther99

iTrader: (8)

Trick's 245s get my vote all the way. Good heads for the $.

bmf5150

Thanks for the advice guys

jdub38672

iTrader: (4)

I would go with a rectangle port like a L92 or LSA. If you can get them cnc'd that's icing on the cake. I'm using a full Cnc'd LSA head.

82cetuner

iTrader: (9)

Im running ported, milled ls3 heads and I make over 500 to the wheels and even more tq

RENE'S RAGE

iTrader: (96)

Call Brian Tooley.
He will set you up!

WKMCD

iTrader: (2)

Do people even read the OP's posts before they answer? He said he needed cathedral port heads to fit the KB he has.

TFS 235's will want roller rockers so factor that in. AFR's can use stock rockers and will also perform very well. Mast is probably King of the Hill but you will pay for them.

Just my $.02

RENE'S RAGE

iTrader: (96)

I thought TFS you could use stock rockers.
I put YT on my TFS, but that was back when everyone thought you had to.
I have stock rockers on my 245 Mast now, with the comp cam upgrade.

Rise of the Phoenix

iTrader: (27)

I think you can too if you get the powdered metal guides.

WKMCD

iTrader: (2)

True!

Rise of the Phoenix

iTrader: (27)

As far as cathedral port goes, you can't go wrong with AFR or TFS. I know the price difference between the AFR 245's and TFS 245's is minimal, but the price difference between AFR/TFS and MAST is pretty high.

RENE'S RAGE

iTrader: (96)

Mast weren't that much higher.
I think around 3100.

Sales2@Texas-speed

iTrader: (5)

Take a look at our 247's. For the price they are pretty hard to beat