Heads???
The big advantage to the AFR225s is the thicker deck that has better clamping force for boost, the AFRs also have some great flow #s out of the box. The AllPro heads are also great for boosted motors with a thick deck but need port work as they dont flow as good untouched.
On The Tree
Joined: Feb 2002
Posts: 178
Likes: 0
From: Ann Arbor, MI
For those of you looking at the Dart 225's, can these be run on a 347 ci motor?
I know that the Afr 225's are meant for a 4.0 bore
I am looking into heads right now myself. have only narrowed it down to a set of dart 225's (would need the chambers opened up too), patriot stage 2 lq9's, et heads, afr 205's or some used heads that I can get somewhat cheap.
Or should I just have my low mileage lq9's ported?
too many choices in the 1250-2250 range.
I know that the Afr 225's are meant for a 4.0 bore
I am looking into heads right now myself. have only narrowed it down to a set of dart 225's (would need the chambers opened up too), patriot stage 2 lq9's, et heads, afr 205's or some used heads that I can get somewhat cheap.
Or should I just have my low mileage lq9's ported?
too many choices in the 1250-2250 range.
Heads??
Originally Posted by Pro Stock John
If you swapped on ported heads, you would make the same power but with less boost. That allows folks to turn up the boost. An engine with ported heads needing less boost to say hit 600rhwp will not run as hot as one running 2-3more psi to hit the same number.
and If you up the boost you will make more power of course 
but with the temps lower 
If that is the case then i am happy anyone know how hard is it to open up the cumbustion chamber in heads about 10 cc's do they have enough room,
those $1200 darts look good other then their 62cc chambers
those $1200 darts look good other then their 62cc chambers
On The Tree
Joined: Feb 2002
Posts: 178
Likes: 0
From: Ann Arbor, MI
Originally Posted by streetbad
Get the baddest heads you can pay for from ET Performance. Just drive over there to pick them up. Money on heads while not cheap, is the best route.
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