Stroker Performance Review

Well I asked for feedback and what I do with it is my responsibility. So I certainly wouldn't want people to hold back what they think or temper it because they think it would overly encourage me to spend too much money.

The converter I had bought for a 318 last year that was hopped up some. Then I got to building this 408. I didn't realize that converters had changed so much but it has been in my mind that the converter may be on the smaller side. This is something I would like to upgrade as money allows.

My main concern to start with is the engine output. I will do leak down and compression testing and if all that looks right upgrade the fuel system with new Carter Strip pump and 3/8 line and pickup and fuel pressure regulator to eliminate that as a possible issue. Also shim the springs to get the seat pressure where it should be. From what I learned in this thread with Trickflows discrepancy that it is really more like 110 at the seat most likely and it should be more in the 135-145 area.

Then its a matter of going to the track and will have another carb on hand a Proform 850 and work with timing and carb and hopefulyl get much more then 2 passes this time.

Thanks

yellow rose said

It’s not so much spending his money, but anyone should see his converter is wrong for his combination.

Way too many people are, for whatever reason still thinking about converters like the converter technology was in 1980.

I personally know guys running 8 inch case, 8 inch stator converters with 5k plus stall speeds in street driven cars. Without issue.

That was one thing that jumped out when reading the OP. You can make all the power you want, but if the converter is wrong, it will never perform like it can.

The carb is small. Is that killing it? Not like the converter is. There are a few other things that could be tuned up, but the converter is by far the biggest thing showing itself as being wrong for the OP’s car.

How many more trips to the track before the day on the dyno pays for itself. In money, time, frustration...everything.

Had the engine been on a dyno, it would have made converter selection much easier.

It’s all about the package. Time is money. I still kicking myself in the groin for not putting my junk on the dyno, so that is happening before it goes back in the car.

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