I'm able to get a good deal on a set of either Canfield or Pro Lightning heads (180cc or 200cc), unfortunately it's not on AFR's too. So my question is which do you think would be a better street/strip head? I'm planning on adding a cam at the same time, probably something around 268-272 adv duration. Emissions are not a concern but drivability is. Both of these heads flow well and seem high quality. If anybody has some experience with either of these please let me know what you thought.

Thanks,

Troy

 

For the price, I think the Pro Action Lightning heads are a great deal...

I am putting them on my car this week (top half of engine is being replaced along with trans) and the quality looked great...

I got the aluminum Lightning and can't wait to see how the 406 does

I hope I make my end of Sept deadline for getting it on the road... sigh....

HTH,

 

88,

Let us know how the Pro Action heads work out. They flow a lot more than the AFR or Canfield heads, and are a bargain.

Unfortunately, ,all that flow isn't always a good thing, but with that many cubes they theoretically should work nicely for you. Reports I've seen on the Iron Lightning heads are promising, so the aluminums should be comparable.

 

I've got the Iron Lightnings on my 350. So far so good. I can't really make a fair comparison cause I changed cams at the same time but the difference between the current setup and my old worked L98's and Hot cam is nite and day. Where as the old combo would fall flat on it's face now the engine doesn't want to stop pulling. I'm hoping to get some dyno numbers by the end of this month if I can get the time to put a new trans in. And shortly after that get it to the track.

I will say the speed shop that I had assemble them were very impressed with them. the owner ended up buying a set for himself, and they were looking into becoming a vendor for them.

 

The Lightning heads get their flow rated at .700" lift! NOBODY lifts their valves that high in a small block.

Real world, below .500" lift, where we all live real-world they are probably about on par with a set of Dart Pro1 heads or an entry level AFR head. Don't have any flow data personally but I've heard anecdotal evidence that the heads don't flow what they are rated. HP has also been lower than expected, comensurate with the lower actual flow.

They ARE good heads compared to stock or some older head designs, I'm sure, don't get me wrong. Just don't get all starry-eyed and think you're bolting on a set of heads that flow like a NASCAR Winston Cup head for under $1000.

 

...But it's the flow numbers at lower lifts that are impressive.

http://www.procylinderheads.com/223400020a.asp

For the price of the raw heads, I can't see anyone spending fifty bucks less for significantly lower flows with no velocity increases to offset the flow numbers.