edelbrock alum head opinion
 

hi all in the process of rebuilding my old 454, stroking it and have a chance to get a set of these heads at a good price(new, but never used) - any feed back, pros or cons....dont have the flow # yet from seller but should soon

thanks pat

i have installed them on several marine engines,they are better than stock gm heads and with aluminum,you can rwn more compression,because aluminum dissipater heat much better than cast iorn.they also flow way better than stock gm heads,and they are priced right.i say go for them.

had a set on my 454...they flow decent numbers,according to my local hi-perf guy...engine made 515hp,with other mods...i was very pleased with the performance

They don't like salt water on a Gen V VI block, Water passages will not line up ( round hole on the head , oblong hole on the block ) salt water sits on top of head gasket and eats up uncoated alum.

How do the water passages line up on the gen IV blocks ??

bottom line is ,no bare aluminum head likes salt water,no matter what block they are on.

ok so do the different gernerations of blocks have different water passages- if so i assume you will have to get the correct generation of head and match up accordingly.....

Read the post, Eats up the uncoated part of the head !!!!

:party-smiley-004:

If I'm correct I believe the heads will work but you have to be sure you have the correct gasket. I believe you use the gasket for the block you have. What block do you have?

We put them on a Gen VI block lasted 60 hrs. the heads all eatten up from the underside (gasket side ) they should be better on a Gen IV Dart or Bowtie block. They all have round cooling passages in the block !!!!

What's wrong with the current heads?
The Ede. heads don't flow that great and I agree on the aluminum...for a salt water off-shore deal you're asking for a maintenance night mare, IMO. A set of well prepped large oval GM iron heads like a set of 781's or 049's will offer plenty of performance for your 454 as long as you can live with 118-119cc chambers. The GenVI block is compatablbe with Mk IV heads, it's the GenV that has issues.

READ THE POST,eats up the uncoated part of the head,ON ANY BLOCK

So what heads do you recomend to make more power than stock 500hp heads.

you running thermostats?al heads need cool water or they get eaten up quickly.i've welded my share of heads up because of the porting to them.

I have built a 2 496s and used the oval edelbrocks with 110 ccs to bump up compression. Are they the best head, NO, but for the price and with valves its a good option.

They will work on any Generation engine, you just need the correct head gasket.

I would use them again.:eekdrop:

cleaned up hp500 heads,work them a little and throw acam at them and your at 600hp.

salt water in the block and heads? how many people run raw water cooling in big blocks? i can see it with small blocks. they are throw-away motors. and can tolerate a couple years of salt. but from what i hear no BBC head stands up to salt.

if you want your aluminum heads to last forever in salt water,install closed cooling system.there you go,FIXED

Yes gen iv heads will fit gen v & vi blocks but you must use the correct gasket .gen v heads dont work on gen iv blocks. Dart offers a coating to put on the heads that will prolong the corrosion,and flushing is a must. You might check out the exaust seats make sure they are harden soft street seats dont live long in a marine motor. And yes closed coolong is the way yo go.