Don Terrill’s Speed-Talk

#-o Flat milled? To a 54cc chamber It was a mistake in the making I handed the heads to a friend at a machine shop and he angle milled .030 off the first head and got to checking things and told me that the head had been flat milled at some time .030" and then he did a .030 angle mill. He said ...

RIP pdq67.......
May he bang some gears and burn rubber for eternity.

E4E77770-9AF2-43BC-8107-5C3C8D7025C8.png3106FC43-5102-4C77-BA70-08FB3B838C18.png03AE1D52-DD56-4ABA-9DA3-B755B6A28E5A.png First of all this turned into a thread of epic goodness.....I spent a good 3 hours reading through it and taking it all in. CGT and randy331, thanks and congradulations on your w...

frnkeore wrote: ↑Fri Nov 20, 2020 5:32 pm Mike, this is the am that I'm having made.

What does the area represent and how is it figured?
Thx.

I heard he is still cleaning on these pistons......

We have had good results using the NOS mini controler for pulling power at the hit.
% setting, time setting and some pulse frequency adjustment.(Hertz)
Straight forward and not overly complicated.

What is the rpm drop on the gear changes?...normaly the converter would look like on the 2-3 gear change where the rpm should drop back say 800 rpm and work its way back up.....
If its blowing through you will see very little rpm climb in high gear.

Lifters were GM ls7 New with this cam, and valve lifter guides? I assume you are meaning valve guides? No.. valve lifter guides or AKA valve lifter trays. You might check out these two youtube videos on LS. https://www.youtube.com/watch?v=8CzhCryAjLM https://www.youtube.com/watch?v=cIq2xxu79NA Of c...

Pics of the can lobe corrugation and engine compartment. Last camshaft I bought from Lunati looked like this as well. (Cam was for gen 1 sbc) I did not like it at all. And I am pretty sure if that cam would’ve made it into a engine. The lifters wouldn’t have lasted long ! Thanks, that is pretty muc...

Pics of the can lobe corrugation and engine compartment.

Were the valve lifter guides OEM GM or aftermarket? Were the lifters OEM GM LS7 or aftermarket? I stopped buying any cams that are made by comp years ago after several failures. Me to. Same with with their lifters. Lifters were GM ls7 New with this cam, and valve lifter guides? I assume you are mea...

My son and myself help out a few of our friends with their cars from time to time and this one Is a 98 Trans-Am with a 408 inch LS. We had just got done Installing the nittrous set up a few weeks ago and they went out and started making some nitrous hits to get the system set up and timing A/F ratio...

Have had good results with .080"-.090" on 1.6" stainless valve v6 turbo application..... 30+psi boost at times. Should maybe have a better valve material but have not had any issues with the stainless. 150HP per cylinder. Street/strip application. That's making some steam! How long i...

Have had good results with .080"-.090" on 1.6" stainless valve v6 turbo application.....
30+psi boost at times. Should maybe have a better valve material but have not had
any issues with the stainless. 150HP per cylinder.

Street/strip application.

Another relevant factor is that max piston speed/air demand is ~78° ATDC, but peak lift is likely ~ 106°, when the piston has been slowing down for almost 30°. I have read on several occasions that there is a time lag on the order of 15-20 crankshaft degrees, that applies to the pulling action on t...