Do these heads seem worth it?
Ideally you'd also like to see numbers at .650, .700, and .750 because the short turn on the 853/241 is super tricky and if not done right, they will lose a lot of flow over .600 (I've even seen flow drop at .575) and that's going to hurt your power output because the shape is wrong or an area in the port is too big or too small.
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Those aren't bad numbers, and they are very realistic. I'm curious as to the runner cc size and valve size, but I can tell you this from my experience on 241's.. 265 - 270 cfm was easy, 280 cfm means you have a clue, and it took a LOT more tweaking (months of R&D) to get my 241 program to hit 294 cfm at .600 with the stock 2.0 valve and maintain a normal sized runner (My 215 R2's).
Ideally you'd also like to see numbers at .650, .700, and .750 because the short turn on the 853/241 is super tricky and if not done right, they will lose a lot of flow over .600 (I've even seen flow drop at .575) and that's going to hurt your power output because the shape is wrong or an area in the port is too big or too small.
Ideally you'd also like to see numbers at .650, .700, and .750 because the short turn on the 853/241 is super tricky and if not done right, they will lose a lot of flow over .600 (I've even seen flow drop at .575) and that's going to hurt your power output because the shape is wrong or an area in the port is too big or too small.
Like I metioned before.Matt knows his stuff around here on the north/northwest side of H-town.As a matter of fact I'm going to be calling him today to buy another set of his heads. Mike
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Good luck buddy... I was at his shop until 8:00 this morning having my heads put on. 22 hours straight. Everything that could have gone wrong DID go wrong, none of which was his fault. It was all stuff people had done to my motor prior to him. I feel REALLY bad for him because he had to work for so long, but I also REALLY REALLY appreciate it, because I don't know ANY other shop that would do that for me. Between him and his stepdad, they have a lot of work ethic. Eventhough it was taking so long, Matt STILL never cut any corners, and did everything by the book.
Last edited by Slash8915; Jun 23, 2010 at 01:27 PM.
-Matt-
Good luck buddy... I was at his shop until 8:00 this morning having my heads put on. 22 hours straight. Everything that could have gone wrong DID go wrong, none of which was his fault. It was all stuff people had done to my motor prior to him. I feel REALLY bad for him because he had to work for so long, but I also REALLY REALLY appreciate it, because I don't know ANY other shop that would do that for me. Between him and his stepdad, they have a lot of work ethic. Eventhough it was taking so long, Matt STILL never cut any corners, and did everything by the book.
-Matt-
