Well, who's running pro-toplines and what are they running? I remember they first came out aka Jegster heads and there was all this hype, then people were having all kinds of problems with them and spent so much getting them fixed that TFS's or AFR's would have been a better deal. Then heard hardly nothing about them after that. Saw a few dyno's and I wasn't too impressed, but maby I was looking at the wrong one's. So who's running PTL's and how do they compare to AFR's and TFS's with otherwise similar combos?
I'm not bashing them, just straight up, lets put on the proof.
$880 is damn cheap, almost too cheap. That is usually what bare castings cost for most aluminum heads, and here these are fully assembled and such? So either someone is cutting corners or someone is just cutting a profit.
Thumper heads are as reliable as stock because that is what they really are, just ported. Factory reliable, won't mess them up unless something really goes wrong, and they are strong performers. I ran 8.4 at 85mph in the 1/8th with them launching from idle on a worn motor. Have TFS waiting to go on the new motor.