Cascade Crew

scott in wa. · Posted: Thu May 31, 2007 11:23 am Post subject: 18 degree heads

Well The commander 950 will be here tomorrow (one down) .

I have been looking at rotating assemblies.
Some say the will work with 18 degree heads.
So that got me looking at 18 degree heads, some use shaft mount rockers, some don't. Man they sure out flow a 23 degree head.
My question is, do they mount to my intake the same? Or are they at different angles?? Will a different degree head bolt up to stealth ram??

Thanks
Scott

Dewey316 · Posted: Thu May 31, 2007 11:25 am Post subject:

You will need a diffrent intake, one designed to work with 18* heads, you will also need diffrent headers. I don't know if you can find 18* heads that even use the standard SBC exuast mounts, they may use the 3 bolt style that a lot of the race cars use.

Twilightoptics · Posted: Thu May 31, 2007 11:47 am Post subject:

scott in wa. · Posted: Thu May 31, 2007 12:31 pm Post subject: nope

No staying with the stealth intake.
But
Do you see anything wrong with the dart pro 1 platinum heads? 230cc

not to bad for around 1,200 summit has some on clearance.

what do you think?
any better for that price?
thanks
scott

Quasi-Traction · Posted: Thu May 31, 2007 1:07 pm Post subject:

I don't see any reason to have 18 degree heads unless I was racing competatively and had a 100K+ budget.

You can make excellent power with 23 degree heads. Its the most cost effective way.

Do the Gen III and Gen IV small blocks use 18 degree heads?

Xophertony · Posted: Thu May 31, 2007 1:14 pm Post subject:

LT1s use 23* heads, because we can bolt LT1 intakes to our engines Smile

*shizzle, am i wrong again... Sad

Dewey316 · Posted: Thu May 31, 2007 1:17 pm Post subject:

I think LT4 is 18*, LS1 may be even less, like 15*

blue89 · Posted: Thu May 31, 2007 1:46 pm Post subject:

Is this the valve to runner angle? The LT4 and LT1 use the same intake.
http://www.airflowresearch.com/195sbc_lt4.php

The LS is just weird looking.

Twilightoptics · Posted: Thu May 31, 2007 2:17 pm Post subject:

Remember guys, his kid wants 500RWHP N/A

18º Heads are probably the way to go.

izcain · Posted: Thu May 31, 2007 9:34 pm Post subject:

A good brand of aftermarket heads (AFR,TrickFlow, Dart, Brodix) something like that with some heavy port work and those 23degree heads will flow more then enough. I think you will not flow enough in other areas besides heads.

iansane · Posted: Thu May 31, 2007 9:51 pm Post subject: