CK5
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what are some good heads for a fuel injected 454
- Thread starter k5texan
- Start date
Many will say go with the Vortecs.
I say the Merlins from World Products can't be beat. /forums/images/graemlins/thumb.gif
I say the Merlins from World Products can't be beat. /forums/images/graemlins/thumb.gif
fortcollinsram
1/2 ton status
I would just go with some stock oval ports if $$$ is an issue. you can always port and polish them...then just get a tbi intake and you are good to go...I am using the "156" casting which are Gen V/ Gen VI peanut ports...they are tiny pots but I am building the motor fo torque rather than peak HP...I agree on the World Products recco...The make great stuff...The Edelbrock performers are decent too if you don't mind an AL head...
Chris
Chris
afroman006
1/2 ton status
I've been wondering the same thing. I haven't looked too far into yet but I like the Edelbrock high compression heads. Anybody have a guess as to what the compression ratio would be using stock pistons? I am probably going to go with any edelbrock head just for simplicities sake. I dont know if my dad has any heads to go along with the block, pistons and crank he is giving me so I may HAVE to buy them. With the high compression heads will my ratio be low enough to run anything but jet fuel? Thx
What year FI motor? Or is it just a mark 4 with a TBI your going to throw at it?
Stock oval port heads(I can give you some casting #'s of some good heads if you like) The merlin oval ports are also good choice. I would definatly stay with oval port heads. I would probably stay away from Al heads but thats just me. See my post here if you want to know why I say that http://coloradok5.com/forums/showflat.php?Cat=&Board=blazer4x4&Number=567138&page=0&view=collapsed&sb=5&o=&fpart=all
The pistons you have now and what cam you are running and what octane gas you want to run on will determine what cc chamber you should go with to keep your compression ratio were the motor wants it.
Stock oval port heads(I can give you some casting #'s of some good heads if you like) The merlin oval ports are also good choice. I would definatly stay with oval port heads. I would probably stay away from Al heads but thats just me. See my post here if you want to know why I say that http://coloradok5.com/forums/showflat.php?Cat=&Board=blazer4x4&Number=567138&page=0&view=collapsed&sb=5&o=&fpart=all
The pistons you have now and what cam you are running and what octane gas you want to run on will determine what cc chamber you should go with to keep your compression ratio were the motor wants it.
....And porting varies as to area and what you are doing. Also if you install bigger valves that will add to the cost(I doubt needed at your level but I dont know particulars of your buildup) You can get away with a basic clean up job that will be fine for a mild build for fairly cheap. Merlin heads are very good for the money after you look at porting some stockers but thier massive chamber can screw you on compression depending how your motor is set up.
afroman006
1/2 ton status
Wow...I just got my Summit catalog and...damn I didnt know heads were so expensive...lol. Anyway I'm guessing I have stock pistons and no cam in mind. I figured I'd call competition cams and see what they recomend I get once I get to that point. I would like to go with regular or super unleaded because the 454 isnt know for its awsome mileage... I would be bolting all this onto a mark IV block that I am goin to have drilled to be a splayed 4 bolt. Thx
it is stock heads off a 89 454. and i have always heard that the stock heads on these are as high performance as a one barrel carb. I dont want anything special just something that will give me excellent torque and decent horsepower.
Z3PR
Banned
World Products !!!!!!!!!! I've used World Products head on meny motors, always have liked them, and I HIGHLY RECOMEND !!!!!!! /forums/images/graemlins/thumb.gif
Well a couple of good stock heads that are easy to find in the oval port iron config are the 290's(these are closed chamber heads so they will boost your compression) or the 791's which are open chamber heads. These will keep your compression close to the same I believe. The merlin heads are a great head but if you can score some factory castings for cheap and get them worked then you might save some cash. And going with the 290's have quite a bit smaller chambers than the merlins so that might be a rout if you want more compression. The compression needs to be picked with thinking about what cam you are going to run(I assume you havent bought pistons yet?)so you can keep the dynamic compression in check and make sure everything is matched.
Whats your casting#? Even the peanut port heads(as they are called) can be a good choice in certian applications. It all depends what you want to do and the rest of your combo and how much $$ you wana spend.
Having your motor built with 4 bolt caps especially splayed will be overkill in your application IMO. Remeber that if you switch caps you will also need to get it line honed. If you just put main studs in and keep the 2 bolt caps you still should have it line honed. Didnt know if you knew that or not and a machine shop should tell you but....
Whats your casting#? Even the peanut port heads(as they are called) can be a good choice in certian applications. It all depends what you want to do and the rest of your combo and how much $$ you wana spend.
Having your motor built with 4 bolt caps especially splayed will be overkill in your application IMO. Remeber that if you switch caps you will also need to get it line honed. If you just put main studs in and keep the 2 bolt caps you still should have it line honed. Didnt know if you knew that or not and a machine shop should tell you but....
