Hi Guys, I have been racking my brain with old posts trying to get the best info I can. I decided to go with a set of Dart Iron Eagles from Dirt Track Thunder. I have 350, comp Cams 274xe with a valve lift of .49 and 230 at intake .5 and 236 at exhaust .5... The flow number I have looked at have shown the 180's slacking around .4 and .5 valve lift. I am tring to make the most power I can and she will be driven on the street. Thanks Guys Im trying to get the most info and opinions before I make the purchase. p.s. anybosy with experince with these heads please tell me about them. Thanks again guys.

I want to know also.

Neither imo.

AFR's or the Good Trick flows. Worth the small price increase and much better heads imo.

if i had to choose between the 2, i'dsay the 200cc's if you've got decent compression, headers, and gears. if not then go with the smaller 180cc's.

In an iron head you cant go wrong with IE's. The 200cc is what I would go with...ofcourse, the AFR's are the pick for about 300 bucks more and 8 weeks of waiting. The trickflows(twisted wedge) are OK, but the canted(18 degree) intake requires a special rocker and with lifts over .500 will require piston flycutting.

I have the Dart IE180's. With static compression around 9.75, a Comp XE262 cam, 2000 stall, and 3.42 gears, I have gone 13.54 at 99mph in my 69 Chevelle. Race weight with driver 3850. I am planning a bigger cam, 3000 stall, and 3.73 gears over the winter. Hopefully I can go some really low 13's at over 100mph next spring.

so if you get the 23 degree trick flows they are a direct bolt on, but the 18 degree ones need machining and other parts?

I had IE 180cc on my old combo . weiand stealth intake 750VS and 3.07 gears and went 12.76 @107. with 3300 lbs weight. I think their not bad for a street car , but with 350" definatly go with the 180cc and keep comp to 9-1 and run the thing on 89 with your cam. I would recommend the RPM performer too.

Mike

Originally posted by Chirp08:
so if you get the 23 degree trick flows they are a direct bolt on, but the 18 degree ones need machining and other parts? The twisted wedge heads(flow much better) only require piston fly cutting when the cam excededs a certain level..I cant remember the exact stats, but they will require a special intake rocker, only made by comp cams I believe.

The twisted wedge heads are basically a 23 degree head with the intake valve rolled to around 18 degrees. I really like the concept, but you dont really hear of them making goobs of power with the racers. I will try them at some point in the future.

i dont have the time or ability to get the machine work done to try out the 18 degree heads, however the 23's bolt right up and i think this is one of those performer rpm vs performer air-gap things, either way its an improvement over hte competition.

I am very happy with my IE200's. I have had a little port work done so we arent comparing apples to apples. I have not started the tunning process and I have been over 87 MPH in the 1/8th in a 3500 lb car with a very mild 383. They are the best thing I ever did for it.

I would run the 200's either out of the box or with some mild bowl blending. Yopu will have some room to grow if you want to get a little more serious later. The 180's will not let you grow later.