http://store.summitracing.com/partdetail.asp?part=TFS%2DK314%2D420%2D395&N=120+4294925232+4294922130+309689

Would this outperform the same heads with a voodoo 268?

Unfortunately, I cant say much about trick flow camshafts cause Ive never used em, nor have I spoken with anyone who has. However, heres what I can tell you. Its obvious that the majority of the researh and development down at trick flow goes into their heads cause thats what they are known for. Their camshafts may be good, but there is a safe bet that somebody else who lives to grind camshafts can make a better cam. Look at edelbrock. They have always been the king of the intake manifold as far as overall performance goes. Yet they seem to have become a jack of all trades. At least today, you wont hear anybody rave about an edelbrock camshaft such as they do an edelbrock intake manifold cause thats what edelbrock is really good for. Same with their heads. They have always had descent enough heads, and recently they have come out with the E tec heads, which are real good, but they still arent blazing any new trails. There are other heads that are as good or better that have been around for a while. Yet Eddy always seems to do good new things with their manifolds, which is what they are most widely known for. Id go with the trick flow cylinder head cause they do what they are supposed to, but Id personally look into another source for a camshaft, cause Im sure harolds cams, or any other notable cam grinders cams are a step ahead of the trick flow cams simply due to priorities.

nice observation, well noted, what gets me is that the actual durations are 1 degree off the voodoo 268, yet hte advertised duration is a 284 compared to 268.

How much compression is truely gained going from dished to flat top pistons, thats hte only difference my motor will have compared to their dynoed motors.

Ahh, there is one give away that the trick flow cam is of an older breed. Nowadays, dedicated cam grinders are finding ways to have shorter seat to seat duration based on different ramp angles and acceleration rates and all that, even though they may have similar .050 numbers(like the trick flow camshaft). Im not a cam grinder so I dont know all the good stuff like Harold does, but Ill explain as best I can.

Basically, if you can accelerate the valve faster at lower lifts and maintain higher lift for a longer period of time(providing more area under the curve) and control the valve all at the same time, you have a camshaft that is capable of more power over a similar rpm range. The longer advertised duration in the trick flow cam with similar .050 numbers to harolds camshaft should indicate that the trick flow cam has a "lazier" lobe than harolds camshaft.

Basically, both cams should perform best over a fairly similar rpm range, but Harolds camshaft should make more power over that power range, it should require less static compression to make that power(faster closing rate of the intake valve, so it traps more cylinder pressure, eliminating the need for as much static compression as the trick flow cam would need), and it should also most likely maintain better idle quality and driveability. Thats basically due to the modernized cam lobes which provide faster, but still controlled acceleration rates of the valve.

As far as dished pistons go, it depends on the size of the dish. There could be a small or large margin of difference depending on the pistons in question. Lets say you have a 12cc dish piston in there. With .040 quench(combination of the head gasket thickness and piston deck height), a 64cc chamber and those 12cc dish pistons, a .030 over 350 chevy will make a hair over 9.5:1 compresion. A flat top with valve releifs that equate 6cc would make roughly 10.25:1 compression. Chances are you have around a 12cc dish and if your trick flows have 64cc chambers and you set quench at or near .040, you will be fine as far as static compression goes. I cant remember off hand, but do those trick flows have 64cc or 68cc chambers? If they are 68cc, you end up with just over 9.2:1 compression. That too should work well with Harolds camshaft, but Id guess it to be a bit low with the trick flow cam. Especially with the dish piston, you know you arent going to have much over 9.5:1 compression(if any), so you will be better off with more of a modern cam, like Harolds.

I would also like to know more about this top end kit.

I have heard the Trick Flow cam is actually a Crane but I cannot verify this.

the trick flow heads are advertised as 64cc but in the specs and on their website have chamber sizes of 62cc which id imagine put me right around 9.5.

I just love the idea of getting it all in one package, with instructions. This all may be put on hold pending hte cause of my cylinder #1 misfire, if its hte rings im going to be looking for a cheap, cheap, long block, preferebly a 383, but man thats gonna be a hard find :(

*bump*

Harold i'd like to get your opinion on this cam. Also what exactly are hte benefits of hte rockers?
Seeing as they list whats in the package i could replace their cam with harolds.