[na svt]

Originally Posted by 1989Gt. Na svt can you advance the cams on a mark 8 intake cam like the cobra ones or no

You can and it will increase tq a bunch. However with the short duration of the mark cams it would bring the RPM at which peak power occurs down another couple hundred RPM.

[1989Gt.]

So on a mark 8 motor the cams arent meant to turn past 6k rpms huh? its pretty much a waste? Is that because the lack of duration in them?

[na svt]

Originally Posted by 1989Gt. So on a mark 8 motor the cams arent meant to turn past 6k rpms huh? its pretty much a waste? Is that because the lack of duration in them?

mark 8 cams have only 184 degrees duration which causes peak power to occur very low in the RPM range.

[1989Gt.]

What rpm? Like 4000

[Dirtyd0g]

With the exception of the LSC intake the difference between the 93 and 96 is that the 96 has a larger oil pickup tube and matching pump. It helped to prevent the lash adjuster and follower failures that these motors were prone to.
Alan

[na svt]

Originally Posted by 1989Gt. What rpm? Like 4000

More like 5000-5200. Peak power needs to occure no earlier than 5800 since B headed combo make very poor mid range power.

[1989Gt.]

Originally Posted by na svt More like 5000-5200. Peak power needs to occure no earlier than 5800 since B headed combo make very poor mid range power.

Ok i thank you for the info! What capability does the cast cranks have as far as revs?

[na svt]

Originally Posted by 1989Gt. Ok i thank you for the info! What capability does the cast cranks have as far as revs?

they're good for 7500 and about 600hp.

[1989Gt.]

Ok i was just wondering cause i have a ford racing cast crank, how much boost do you think that car will handle if i have forged pistons and connecting rods, then the cast crank.

[1989Gt.]

i didnt mean boost i meant nitrous

[na svt]

Originally Posted by 1989Gt. i didnt mean boost i meant nitrous

The crank can hold up to more than you'll ever make. How much the rods and pistons can take depends on parts you choose to use.

[1989Gt.]

They were manly pistons and mmr forged steed rods, total seal rings filed for 150shot .22 if im not mistaken.

[Travstang]

Originally Posted by musclemerc Get one from the Mark 8, they have Teksid blocks which are stronger than the Romeo blocks

Yep! They're the strongest aluminum block from factory, and i think you can shove 52lbs of boost down their throat? Thats the block ill be using for my future 5.0 stroker build. Cant go wrong with a Teksid

[na svt]

Originally Posted by Travstang Yep! They're the strongest aluminum block from factory, and i think you can shove 52lbs of boost down their throat? Thats the block ill be using for my future 5.0 stroker build. Cant go wrong with a Teksid

Iron blocks are stronger and hold their shape better under load, both RPM and hp. Iron blocks will also make more hp than aluminum blocks.

The Teksid cannot withstand 52lbs of bost in stock form. The racers that are pushing upwards of 40psi with them are using two cooling systems, one for the heads and one for the block. The cooland passages in the deck surfaces are welded shut so no water passes between the block and heads. The reason for this is that under pressure they couldnt keep the coolant from blowing out.

Teksids aren't event he strongest aluminum blocks, the 05 and up aluminum block, teh one used in the Aluminator engines and the 3vs are even stronger. However, in a street driven combo, a standard WAP aluminum block will hold up to whatever you can throw at it.

[Travstang]

Originally Posted by na svt Iron blocks are stronger and hold their shape better under load, both RPM and hp. Iron blocks will also make more hp than aluminum blocks. The Teksid cannot withstand 52lbs of bost in stock form. The racers that are pushing upwards of 40psi with them are using two cooling systems, one for the heads and one for the block. The cooland passages in the deck surfaces are welded shut so no water passes between the block and heads. The reason for this is that under pressure they couldnt keep the coolant from blowing out. Teksids aren't event he strongest aluminum blocks, the 05 and up aluminum block, teh one used in the Aluminator engines and the 3vs are even stronger. However, in a street driven combo, a standard WAP aluminum block will hold up to whatever you can throw at it.

I meant 42lbs, my bad. But dont the 3V blocks warp real bad at high temps? Just something i've heard before

[na svt]

Originally Posted by Travstang I meant 42lbs, my bad. But dont the 3V blocks warp real bad at high temps? Just something i've heard before

Any aluminum block will warp bad at high temps.

[1989Gt.]

What kind of high temps are we talking here?

[Dirtyd0g]

If anything the aluminum block dissipates heat better. Heads are easily damaged by overheating more than the block is. Any motor that exceeds about 250 degrees and you plan to rebuild it should have all the castings planed or at least checked.
Alan

[MustangKid94]

That's exactly what I want to do to my 99 Mustang! Hope everything goes well! Hopefully I can find a good deal on a mark vii engine like you did