LT1-LT4 Modifications 1993-97 Gen II Small Block V8

twisted wedge heads

Old Nov 24, 2010 | 07:35 PM
  #21  
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hey you two, i started this thread to ask about twisted wedge heads, and thats what im trying to learn about. so please take your bitchfits elsewhere
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Old Nov 24, 2010 | 07:37 PM
  #22  
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He started it.
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Old Nov 24, 2010 | 07:38 PM
  #23  
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now children, please go back and see who bashed first, no bashing please
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Old Nov 24, 2010 | 07:45 PM
  #24  
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Ha ha! I still think you will be better off having your stock heads ported.
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Old Nov 24, 2010 | 09:02 PM
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Agreed on stock heads, regardless of porter. You say you're aother college kid on a budget...then don't go with a wild head. You never know what could happen...and if they're hard to find, you could end up **** creek and have to get a completely different set of heads. waste of money.
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Old Nov 24, 2010 | 09:34 PM
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see thats what im talkin about, lets just put our differences aside and help tolley find some good budget heads lol
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Old Nov 25, 2010 | 12:26 AM
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Hey:

Rare doesn't mean good or better. They are rare for a reason, and that usually means money needs to be spent to make them work... not small budget compatible.

Just know this if not set up right, they have issues. They need the backset r rockers that comp sells and intake and ex take different length pushrods, If not properly setup they are prone to break springs and wear guides. When set up with correct geometry and ported the LTX TFS TW last generation heads put out very good power thru a very wide range, and don't need to be revved to do it. I had a early and late set and took forever to get them set up correctly, due to lack of good info from Trickflow ATT. Early sets are problematic and steer clear from them.

They work great on 355 engines. I don't know if TFS sells the special guide plates any more as well, they kinda of gave the Kenny D/TFS name a bad rep awhile ago, that they have since overcame and then some. Some size valves may be hard to locate for them and they do not make as much power as many new 18,21,& 23 heads, and were discontinued. Just make sure they are complete, with valves, guide plates, backset roller rockers, TFS valve covers, springs and so on as you will be on a Treasure Hunt to find the correct stuff. Not budget friendly as you will need to get them ported to get any real gains from them and 2 grand isn't much for a good set of heads, plus these need a mid range cam ground for them to get the maximum from them. Call AI and get their thoughts on them. Me, I got rid of them and went to something much better AI ported LT4 heads. If I was doing today it would be TFS 21degree heads ported by AI.

Dub

Last edited by 1993 z28 f1; Nov 25, 2010 at 01:03 AM.
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Old Nov 25, 2010 | 02:10 AM
  #28  
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This---^
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Old Nov 25, 2010 | 09:57 AM
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IMO they are not worth running. Rick Abare initially had fully ported TFS twisted wedge LT heads on his 383, and ended up gaining over a third of a second and 4-5mph by swapping to our 190cc CNC'd GM LT1 head years back. From valve train issues, to other aspects that are less than ideal, there is a reason they were phased out.

If you are looking for 400-450rwhp NA with a hydraulic roller 350/355/383/396 then you simply cannot be the value of our 190/200cc CNC work & components applied to GM LT castings. Our 190/200cc head will not only make more power, but with our level of machining you are guaranteed to receive the level of potential that all of our fast guys got. We do not produce a "monday" or "friday" head. Furthermore, though rarely discussed, we have essentially eliminated the trade offs w/ our 190/200cc work that lesser designs & entry level work often suffer from. You can have a ~400rwhp mild 350 setup now, and simply allow us to freshen the head and swap valve train in the future for 450-500rwhp NA without having to buy new heads.

If $ is a concern up front, then it is worth considering the cost of ownership beyond initial purchase price. Additionally, the more you deviate from stock, the higher the probability is that you'll either have issues or reduce the longevity significantly.

Good luck!
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Old Nov 25, 2010 | 03:05 PM
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AI, how much do you guys usually charge, i know i cant get an exact figure, but i can get a ballpark, i would love to be around the 400 mark preferably above it and retain some streetability. It is my daily driver, but im one of those people that will proudly sacrifice comfortability in the name of coolness and a lopey cam.
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Old Nov 25, 2010 | 03:42 PM
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Hey:

Here you go OP: http://s322636171.e-shop.info/shop/c...aram=cid%3D%26

Dub
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Old Nov 30, 2010 | 08:15 AM
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Cost depends on what all you need. Check out our website when you have a moment.. both the original site & the online shop (http://shop.advancedinduction.com/) have pricing, list components, etc.
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Old Nov 30, 2010 | 12:36 PM
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I can tell you that if anyone can deliver what you want to a tee, it's Phil.
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Old Nov 30, 2010 | 01:17 PM
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Lloyd Elliot does a great job, and MANY LT1's run outstanding times with his setups, but if it were me, and I had the extra money, I would go with AI. Simply because everything is CNC'd, 100% precise done by machine. And I have seen cars with very small custom grind cams from AI run ridiculous times at the track. The same can be said about the LE setup cars, but idk it's all in what you prefer. For me, CNC > Hand porting
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