What's wrong with the Mark VIII engine?

[Motorhead350]

I recall a few people have bought these engines for the blocks and nothing else, but could the engine complete work? If not, then why so?

I have the opportunity to buy a Mark 8 engine, but my main objective is to tear it down and replace the pistons and have the heads done, drop and go. Eventually adding a power adder.

The heads do not fit with our intake, that I recall, but what about the engine as a whole? What is the issue with this?

Thank you in advance, just doing a little research.

[fastblackmerc]

I believe the Mark block is a tekskid block.... the holy grail of mod motor blocks.

[Motorhead350]

Yes that's what I recall, but why aren't people simply dropping these in?

Something wasn't quite right with the top end? Was this a clearance issue? Intake?

[Ambitious1]

This may help:

https://www.mercurymarauder.net/foru...ad.php?t=63211

[Motorhead350]

Doesn't say anything about why or why not the engine would work for us.

I found the part on B heads as opposed to C heads, but it's still not clear to me as to why people don't plug and play with these.

[Drewstang]

The heads are the main issue as the Marauder intake won't bolt up to them. The next issue is for high performance builds the pistons and rods are not very good over 500 hp or so. The shortblock is a good swap if you're not boosting above that level.

[Mr. Man]

Teksid blocks are also available in early Aviators. Can't remember when Ford went to exclusively the WAP block.

[Motorhead350]

From my research I have determine I can use a Mark 8 block, type C heads (can be found on a Lincoln contential and would have to use the Marauder upper intake upon install.

I want to build an engine over time even if it's just the long block, then put it all in, in a weekend.

Does this sound possible or am I missing something? I would put in fresh pistons and have a machine shop take care of the block after tear down. Basically, I want to build a new engine for the car that could handle boost. Nothing too big, but I would like to be back to a 12 second street car or high 11s.

[massacre]

I typed out a bunch of stuff but then deleted it
Prob better this way

[Zack]

I typed out a bunch of stuff but then deleted it
Prob better this way

LMAO!!!!

[Drewstang]

I wasn't aware the Continentals had C heads. But that sounds like a solid plan.

[Motorhead350]

I typed out a bunch of stuff but then deleted it
Prob better this way

Flat Duo Jets is on tour with Agent Orange and Reverend Horton Heat.

Sounds like the set up is legit.

Time to slowly build.

[massacre]

I wasn't aware the Continentals had C heads. But that sounds like a solid plan.

The Continental C heads are same as '99-'01 Cobra heads, meaning that they have bigger combustion chambers and smaller, more restrictive ports than the '03-'04 C heads.
Will they work? Sure.
Will they make as much power? Nope.
I have posted this info here multiple times, just as a heads up to those that are thinking of using Conti heads. Every single person that I personally know that built a mod motor with '99-'01 heads has been disappointed in the performance.
Yes they are usually cheaper but you get what you pay for.
'03-'04 heads are better out of the box.

[massacre]

Flat Duo Jets is on tour with Agent Orange and Reverend Horton Heat.

Sounds like the set up is legit.

Time to slowly build.

Nice. Always loved the Reverend they put on a great show. I don't think they are playing in my area though. Thanks for the heads up.

[ctrlraven]

From my research I have determine I can use a Mark 8 block, type C heads (can be found on a Lincoln contential and would have to use the Marauder upper intake upon install.

I want to build an engine over time even if it's just the long block, then put it all in, in a weekend.

Does this sound possible or am I missing something? I would put in fresh pistons and have a machine shop take care of the block after tear down. Basically, I want to build a new engine for the car that could handle boost. Nothing too big, but I would like to be back to a 12 second street car or high 11s.

Yes you can use the block and that's about it. You want 03/04 heads which were the next version AFTER type c 99/01 heads.

https://www.svtperformance.com/forum...-heads.625895/