Don Terrill’s Speed-Talk

1980RS wrote: ↑Sat Apr 20, 2024 2:37 pm WOW! how in the hell would you seal the bottom of the intake port like that???

Make sure the mating surface is square.. thats about it.

Just look at it long enough...

Either way.. port energy is some MADE UP BS to sell a BS computer program to chose a cam with an arbitrary lobe center.

I wonder how many automobile manufacturers utilize this important equation.

DD49CF24-2C89-4064-9210-6E069EA0604A.png Something seems wonky here. I’ve never see an engine fall off dramatically and level off like that without something being wrong. If the air is reaching a critical velocity from being undersized, it will start falling off and remain falling off. Are they sur...

Tom68 wrote: ↑Mon Apr 22, 2024 7:34 pm Standard cam for DV's?
Then it's all about curtain area.
Both the ports are probably too big for a small cam.

Big ports don't need big cams. DV showed us nothing again.

Methanol

Is US pump e85 actually e *up to* 85? Changing by season and location? I don't know how a carb would deal with that variability in fuel. In a pinch while leaving a popular cruising spot :wink: :wink: I stopped at a gas station to fill up because it was the only one close enough with e85. 5 gallon f...

You would gain with 850s but not for money spent. You would Def be happy with a pair of doms and see better improvement. I went through same thing with 900 plus hp sbc. Braswell told me when I went from 865 hp to the 935 setup that his 850s would still do the job. I ran it 3 times, about 7 passes. ...

Edelbrock Super Victor 2970, ported at Chopper Air Port. This one is for 400+ cubic inches, running a set of AFR 220s (2.5 sq. in. MCSA, ported by Weingartner), pushing 8000 RPM with 450-500 HP of nitrous... IMG_9610.JPG IMG_9635.JPG IMG_9690.JPG IMG_9691.JPG IMG_9694.JPG IMG_9695.JPG IMG_9702.JPG ...

Cool.. when will you have some results?

To get a better understanding of this situation with stick shift and maybe help the OP. Engine is not yet assembled. What is the better choice in this situation: Leave compression as is and choose camshaft IVC that will help prevent combustion issues but likely shift torque curve up in rpm but make...

Does this use the formula: Static compression ratio + cylinder head material = fuel octane rating? No formula.. 45 years experience. With your experience if he changed to aluminum heads what would the Octane requirements be then? Just ignore him.. his experience is 45 years of regurgitated hearsay.

IMG_0410.jpeg These are the n351 heads on a 4.100 stroke Windsor. I bought the heads used and never poured the chambers until recently, after I invested in the offset shaft rockers and custom header etc. They were supposed to be 64cc but apparently they got cleaned up a little too much. :? I would ...

KnightEngines wrote: ↑Tue Apr 09, 2024 9:20 pm Ouch, manual trans, I probably would want comp closer to 11;1.

Especially with that hot under hood air temps Arizona brings.

Well.. disregard the dynamic compression.. whats important is vehicle weight, gearing, tire size, converter speed. Altitude climate etc.