Don Terrill’s Speed-Talk

Thanks for the replies, the hot spot points is a very nice tip, I put a Photo of the chamber below, anda yes It is an aluminum Head, I don't think on welding It and I don't think It is necessary as It is pretty closes already

Is there any mods for a closed wedge chamber with 2 quench pads, I have a head with very closed chamber around 45-50cc on a 4 inch bore that needs some deshrounding already and I was thinking if there is anything else that can be done to it to make it a faster burning head

It Will not make a big difference, and probably Will get you a higher Dynamic compression depending on you closing Valve timming

An alternator has the efficiency around 50%, so 30amps times 14v divided by .50 is 840watts thats close to the 1hp mentioned above, it can vary a ittle with temperature as well as belt tension and efficiency but it is a good estimative

Some older Afbs use different floats than AVS/Edelbrock ones, also the cluster is lower on the carb too, how height are you setting the float? The main air bleed should be around .031in. If you change the needle and seat do know if they have the same size or bigger?

I'd like more compression too with that cam, also the way that the power curve flattens at 6200rpm shows that you may need more flow on the heads/intake

On 1:1 vs staged I've found it varies with the intake, some older intakes are flatter and carbs more apart from each other that when staged won't run good. Yours are dual plane so my advice is to run then as they came as baseline and check each plug that way you know which cylinder needs more fuel. ...

+1 on bigger clearance on the rear main cap

Appreciate all of the responses! here are the answers to the questions The engine is built as a clone of a 66 L79 Nova. The Z28 intake looks similar to the L79 but flows better. Thats why it was used instead, the PCV system is the stock looking system as used on the L79. It was referred to as a clo...

A too loose valve on its guide can make this as it moves sideways an let oil past the valve seal, did you checked the head before the assembly? Even a new head could be off specs sometimes, I would double check the valve seal if the guide is ok. Did the head or block got milled for compression/quenc...