Don Terrill’s Speed-Talk

Clean threads, oil/lube/sealer or w/e you use and the washer/head surface are all factors https://youtu.be/skvJHh-7i70 Aluminum creeps/squishes and threads fail. I've slapped stuff together w/o a care and been fine OR took extra steps of prep n did everything right(I thought at the time not understa...

Test the gas, knew a guy who went n replaced/checked it all to find out he just filled up with mostly water.

And of course the 23 dual plane comparison https://www.motortrend.com/how-to/dual-plane-intake-manifold-comparisons/ Not a huge spread and if you cleaned up each intake, it would narrow it I'd bet. Also think all(most) the ones tested were modern design and close to same style plenum/runners, unlike...

Dual planes smaller higher velocity runners is only part of it and yes the length part is overblown. from this article https://www.motortrend.com/news/0601em-intake/ " A V-8 engine fires a cylinder every 90 degrees of crank rotation, and the induction cycle of any given cylinder will greatly overlap...

Dist gear is another possible cause and easy to check if if the rotor moves.

It's being tuned on a chassis dyno, so if they don't push the gasket it will be good to go for retorque. Got a larger Precision Instruments for wheel nuts n higher ft-lb stuff, I like it but prefer my 1/2" craftsmen for heads. Not long ago bought a couple CDI 1/2 & 3/8 but not used them yet, got th...

Leaf spring damageIMG_0939.jpg Cut that end bit off. I'm not a leafspring expert but when I looked into them, pretty sure for drag-race you clamp the front and leave/remove the rear for it to expand to help with traction. edit: For the street then clamp the rear, easy enough to remove at/before the...

The gaskets do not need to be retorqued after running. But if you go over them several times on during the original installation you sometimes find the head and gasket settles a little and you will find some a little bit loose. Rember just because something is made of metal doesn't mean it does not...

Competition Products house brand SS valves are chrome stems, least the ones they sell these days are https://www.competitionproducts.com/CP-Stainless-Racing-Valve-Chev-SB-2020-Int-11_32/productinfo/CMP0210/#.Y-FBZXbMLAU Bought this Power Products SS no-under cut set from them that is also chrome ste...

All the cheap valve sets that I have, seem to have chrome stems. At least by the looks of the top stem part color change just under the lock grooves or maybe I'm wrong if someone cares to explain?

Also they make copper gaskets https://www.summitracing.com/parts/sum-111480

A mirror or other flat surface and sand paper will flatten small stuff like that https://youtu.be/lp2AyejH2VU

Turns out I do have a regular airgap, I bought it to cut up, but besides having to weld some port floors for gasket seal it lacks port height and sealing area (2.75" v 2.55") also needs a 120 thou gasket to get the ports somewhere near alignment. Exactly why I was considering a Vortec dual plane fo...

Chrome stems but it's not very thick fyi, so used SS valves with cast guides may not be ideal. I was actually reading something the other day that said Steel valves are harder than some SS valves, until higher temps 800+ I know places like Manley used diff SS for diff lines of valves or for the exha...

High spring rate, in my mind if we were turning to 75 that'd keep the hydraulics under control, but since we're not I want to keep the nose pressure down so I can brag about this flat tappet cam still performing 20 years from now. Lower rate than the Crane set 110 seat @ 1.7 according to summit, so...