smallblocksn95 Posted May 14, 2013 Report Share Posted May 14, 2013 does anyone if the afr-1422 heads, with the 2.02 intake valve, will clear a factory 1996 351w piston? i can't find a definative size but it seams they are either 17 or 22 cc. please no comments about "just use aftermarket pistons" I'm looking for an answer before i order these heads. Link to comment Share on other sites More sharing options...
64bit_Tuning Posted May 14, 2013 Report Share Posted May 14, 2013 Every combo is different. You have to measure PTV. Link to comment Share on other sites More sharing options...
Det_Riot Posted May 14, 2013 Report Share Posted May 14, 2013 ^thats what I was going to say. I mean I guess you could order them, once you get em, check PTV and if they don't work return em, just make sure you don't scratch em or anything and you should be fine Link to comment Share on other sites More sharing options...
Venom351R Posted May 15, 2013 Report Share Posted May 15, 2013 always check PVC, last thing you want is a new shiny valve to slap a piston Link to comment Share on other sites More sharing options...
smallblocksn95 Posted May 15, 2013 Author Report Share Posted May 15, 2013 I planned on it, and I know that it depends on the cam too, I was just hoping someone had been down that road before so I could breath a little easier Link to comment Share on other sites More sharing options...
Venom351R Posted May 15, 2013 Report Share Posted May 15, 2013 also will want to recheck your pushrod length Link to comment Share on other sites More sharing options...
itsblown93 Posted May 16, 2013 Report Share Posted May 16, 2013 if you have a little bit of PTV you can also have the piston notched so you dont have to get new pistons. Link to comment Share on other sites More sharing options...
Schiffy Posted May 16, 2013 Report Share Posted May 16, 2013 Thicker head gasket?Sent from my secretary!!! Link to comment Share on other sites More sharing options...
64bit_Tuning Posted May 16, 2013 Report Share Posted May 16, 2013 Thicker head gasket?F that. Lower compression... no thanks. I'd rather notch my pistons. Link to comment Share on other sites More sharing options...
Det_Riot Posted May 16, 2013 Report Share Posted May 16, 2013 Maybe he wants to run booost? Link to comment Share on other sites More sharing options...
64bit_Tuning Posted May 16, 2013 Report Share Posted May 16, 2013 (edited) Maybe he wants to run booost?A factory 351w block and stock pistons will hardly pass any kind of limitations for a forced induction motor with even a 58cc head. 93 octane and a good tuner can run boost on 10:1 CR EASILY*edit*Hell, Even the little honda fags are running turbos on the K20Z3 from the 06-11 Civic Si... and it has 11:1 CR Edited May 16, 2013 by The Mk2 Link to comment Share on other sites More sharing options...
smallblocksn95 Posted May 17, 2013 Author Report Share Posted May 17, 2013 After the decking, with stock E7s I'd be up to 8.9 cr Link to comment Share on other sites More sharing options...
64bit_Tuning Posted May 17, 2013 Report Share Posted May 17, 2013 After the decking, with stock E7s I'd be up to 8.9 crI really hope you arent putting E7's back on there... Link to comment Share on other sites More sharing options...
smallblocksn95 Posted May 17, 2013 Author Report Share Posted May 17, 2013 Lol hell no.....I'm just saying that my compression will be slightly higher since its been decked. I'd like to run a 58cc chamber to get over 9:1. Stock this motor had 8.8:1 Link to comment Share on other sites More sharing options...
Venom351R Posted May 17, 2013 Report Share Posted May 17, 2013 what made you decide to go with 185's VS a bigger head? Link to comment Share on other sites More sharing options...
smallblocksn95 Posted May 18, 2013 Author Report Share Posted May 18, 2013 The fact that its still only 351 ci Link to comment Share on other sites More sharing options...
64bit_Tuning Posted May 18, 2013 Report Share Posted May 18, 2013 The fact that its still only 351 ci185's are considered on the smaller side for a 347. I'll be running 195's on my car with some port work. Likely closer to 200. You might want to consider them with some port work, minimum. Link to comment Share on other sites More sharing options...
64bit_Tuning Posted May 20, 2013 Report Share Posted May 20, 2013 185's are considered on the smaller side for a 347. I'll be running 195's on my car with some port work. Likely closer to 200. You might want to consider them with some port work, minimum.I guess I just wanted to add this on for future searches...When I was hanging out with Ed Curtis, I told him I was considering 185CC heads for my 347. He said... NO. He then told me about how the 195 and its flow pathing has been proven to be a better head for a 4.030 cylinder. So that is the way I am going. If I was told NO about 185's on a 347... I cant see you being told any differently. Link to comment Share on other sites More sharing options...
Venom351R Posted May 21, 2013 Report Share Posted May 21, 2013 The fact that its still only 351 cihaha...no. My 351 HAD 185's on it and I always knew they were to small of a head. While a lot goes into what size head is best ( its more then just the # ) but I would not considering anything smaller then a 195- 205cc head for a 351 unless it had some good port work done. Like Keith said a 185 head is better suited for more of a mild 347 or a stout 302. My heads are 234cc and I'll have dyno numbers in a few weeks so you can see a comparison of 185 AFR's ( My previous heads ) and shorty headers VS my now High Port 234cc's and Long Tubes Link to comment Share on other sites More sharing options...
