im looking into the dart platnuim iron eagle cylinder heads with 2.05/ 1.60 valves

1) what would suit the engine better the 200cc or 215cc runners?

2) Anyone know ifthese will bolt to 87- up intake pattern?

they are 699.99 buy it now on ebay assembled doesnt sound like a bad deal

http://cgi.ebay.com/ebaymotors/Dart-...QQcmdZViewItem

 

I may get burned on this by somebody that knows more than me, but, I would go with the smaller of the two for a 388.

I have been told that if you get too big of a runner on too small of an engine, you lose port velocity (as well as low end power).

I have heard of people getting just as much flow, with better port velocity and fuel atomization with a properly ported 180 cc vs. a 195 cc.

 

1991 RS/SS is right. You want your intake runner size to match up with the rest of your combo... cam, intake, gearing, rpm range ect. Without knowing the rest of your combo and your intended usage of the car its hard to give a good answer. For example I would get the 200cc version if you are building a 400-450HP 388 that you are planning on shifting around 5500RPM's using .525lift 225dur.@.05 cam, 3.55gears. That combo would be a very street friendly torque monster and an easy mid 12 sec 1/4 mile. If you are planning on going more radical than that(450+HP, 11sec) I would step up to the 215cc heads to allow your engine to breath better at high rpm's and match up better to a higher lift/duration cam and steeper gearing ect. And if you are like me and always wanting to make changes and go faster the 215cc heads have more potential even if they aren't an ideal match at this point..just something to keep in mind depending on your long term goals. If you are looking at getting your heads ported I would recommend Mike Start at CFM performance, he has a shop in Gasoline Alley here in Indy. He does great work for a reasonable price and is very knowledgable about engine combos.

http://www.cfmperformance.com/cfmhome.htm

 

i plan on using this car as a 70% daily driver. and running it every other tuesday night at IRP.

my combo is

- 388 stroker
- lt1 intake
- Forged eagle rods
- Forged Probe pistons
- eagle crank
- comp 290 xtreme cam (thinking about it)
- Dart platnuim iron eagle heads 215 cc, 72cc chambers (10.5:1)
- #26 injectors


just wondering if this cam will be good forthis combo

 

If you are planning on running a cam that big I would definately go with the 215cc heads. I'm not that familiar with the LT1 intake to know how well that matches up or the injectors. I'm assuming you are talking about the XS-290S(mechanical flat tappet cam 252/260@.05, .540/.588 lift)..its the only 290 XE cam I see in my catalog. If you are going to be driving the car that much you might want to go with a smaller cam and maybe something thats a hydraulic roller but that also depends on the amount of driving you do, and how important idle quality is. For a daily driver I would probably go with XR-282HR 230/236@.05, .510/.520 lift, if you stay in the 230's in duration it makes tuning much easier and idle quality is better but it will still sound good with a noticable lope at idle. Since you are going with fuel injection you may want something slightly different, I'm a carb guy. Maybe someone more familiar with FI combo's could suggest something better for your application? I always think in terms of carbs since thats what I'm familiar with.

 

thanks for the info.

im going with hydro roller

I called comp and they told me i need

-230/236 duration at .050

-.576/.571 lift with 1.6 rockers figured in

-113 degree LSA

-and a small base circle


The closest i found was the (07-306-8) 290HR-12 (lt1/lt4 section)

-230/244 duration at .050

-.510/.540 with 1.5 rockers figured in

-112 degree LSA


sounds funky to me....

 

For a 230 on the intake a 200cc matches better.
For a 240 plus cam the 215 would be better.

Also, the 200cc has a felpro 1205 size port which fits the Lt1 intake after a port match.
The 215's take a 1206 which will not fit the intake w/o having
extra material welded on to cover the bigger port.
Plan on $150-$200 to have that done.