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New 331 for my car but I need some help.

We'll I must have quite the talent on purchasing the wrong heads. I mentioned that I was going to have a custom billet cam made for my engine and the cam guy said to ditch the Victor Jr heads I purchased and get a set of Twisted Wedge Fast As Cast 190 cc heads. Luckily I sold the Victor heads for what I had in them, minus shipping costs that is. At least I know I'll have one hell of a combo when it is done.

By making this change it also means I need to have my heads fly cut for TW heads. They went to UPS yesterday and are now somewhere between WA and Probe Industries in CA. When the heads come in and the pistons come back I'll be ready for balancing/blue printing. I can't wait for this to be done. it should be a FUN car to drive. :ecit

I think I'll start taking some of the accessories off the old engine tonight and get it ready to sell. That will help me pay for the new engine which is quickly going way past my original budget. It will be a much better engine when it is all said and done though. I really think I'll end up with 550+rwhp that is streetable.
 
How much lift are you running? Depending on duration, you can run quite a bit with the TFS heads before you run into clearance problems.
 
I have no idea on the specs of the cam at this time. I called Probe and asked them how much lift I could have before running into problems and the guy said only about .520. I knew at that point I would need them fly cut.
 
Ok, the E cam comes out to about .529" lift with 1.7 rockers.

Did you tell Probe you were running Trick Flow heads?
 
I sure did. I just think that there is no way that the new cam will come in under .520 lift. I anticipate it to be .550 min.
 
Err, had to review the thread again. Yeah, you're definitely going to need to have valve reliefs machined for the twisted wedge heads. Should turn out freaking awesome, though:) I hear Jay is the man.
 
This is a totally different beast, but a comparison of 185 to 218cc heads (clevor CHI heads) can be found here towards the bottom: http://www.chiheads.com.au/our_results.php

Not really comparing apples to apples, but proves the point that bigger isn't always better when you look at heads. It may give you 10 or 20 extra HP, but it'll push your curve higher in the RPM range as can be seen in their numbers of the comparison. At 5300rpm they are identical and after that the larger heads start picking up steam. Again, a clevor is a different beast than a boosted 331 but you get the idea. Good luck with the as cast TWF, I hear they are a darn good head.
 
I've heard great things about the FAC heads as well. I am putting the full faith in this build in Jay Allen's hands. The only thing I am not doing is making it a 363 stroker. Jay wanted me to go bigger than I want to with a Boss block. I am even going to follow his guidance on roller lifters. I have learned not to second guess professionals (well most of the time) and I am tired of doing things twice.
 
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