opinions on h&c for my 427
02-21-2005, 07:09 PM
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opinions on h&c for my 427 i have a 427cid and i bought the h/c that were recomended to me which were 242/250 .612 .619 114 and mti stage II r heads what do you think?
02-21-2005, 07:59 PM
#2
Surprised you did all that without a head and cam! Should be fine. Some other head may be a little better, however you will probably never notice.
Will it pass emissions? Does it need to?
Will it pass emissions? Does it need to?
02-22-2005, 08:58 AM
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i'm not worried about emissions or any of that. that is the cam that they recomended and gave me with the shortblock and i already had the headss and didn't wanna spend the money on new ones.
02-22-2005, 09:17 AM
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Originally Posted by Phoenix H.O.
i'm not worried about emissions or any of that. that is the cam that they recomended and gave me with the shortblock and i already had the headss and didn't wanna spend the money on new ones.
02-22-2005, 10:45 AM
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Send the heads back to MTI to upgrade them to a stage 3 head, along with opening up the combustion chamber to accept the larger bore on the motor, as I remember you saying that they were originally on your 346. Cam wise you should fine, id personnaly go a bit bigger 
02-22-2005, 11:38 AM
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Originally Posted by Phoenix H.O.
i have a 427cid and i bought the h/c that were recomended to me which were 242/250 .612 .619 114 and mti stage II r heads what do you think?
It sucks to keep taking the motor in and out to keep repairing the block. Make sure to check the deck surface! Trust me. Good luck. Trending Topics
04-30-2005, 09:45 AM
#12
In my experience with big inch engines and heads, a 4.8/5.3/5.7 head can't hardly be opened up enough to feed the engine. We always run a LS6/6.0/AFR with at least 230cc port volume. We have seen 50 RWHP between a 225cc 5.7 head (300 cfm) and a 238cc 6.0 head (340 cfm). If you can't afford heads now, don't spend ANY money on the ones you have, you will not be happy long term. Put em on and run em till you can afford what you want. And the block issue? Do some research!