Don Terrill’s Speed-Talk

Not that it means much but here is numbers by AFR,comparing flow numbers is not a great idea but they are not inflated by AFR. my opinion is they have not achieved anything, they bolt another set of heads on the engine and it runs the same, WOW . I have done that test more than once with same result...

I forgot to mention I have talked to guys over last couple of years at the track who have changed rear gear ratio with no other changes and expected ET improvements. All have said the only thing that happened was rpm increases with no ET gain. My opinion is gear/ tyre diameter go hand in hand and al...

I am a fan of the slide rule,it is something to work towards. With my own combos it is usually 15hp or so relevant. As been discussed previously if you are not using the potential power of the engine work on the rest of the car and leave engine alone. This is another chart worth looking at 20220815...

rebelyell wrote: ↑Mon Apr 22, 2024 9:59 am that said, seems speedmaster79 website remains up.
just the same, no thank you

Unfortunately people will keep buying there junk parts,I bet most of it comes through fleabay

I've seen the old Moroso slide rule has been mentioned here at Speed-Talk every now and then. I was kind of surprised at the amount of merit it gets from folks I wouldn't have thought put any faith into it. Opinions? FWIW, I went back and dug out some old time slips, chassis dyno results, engine bu...

Rich 3000 RPM cruise at 70 mph at 20 hg of vacuum with my Holley 750 Street HP 82750SA vacuum secondary. 13 AFR. Everything else is in range and clean. This is a 4150 with 4 corner idle. Downleg boosters. This per my AEM UEGO AFR gauge. The carb is set up as follows: Front curb idle at 3/4 turn. Tr...

Looking like you are extremely close to Larry calculated, very impressive.
Looking forward to some details, appreciate you sharing.

Slide rule says 9.95 @ 134 mph @ 3500 pds and 650 hp

As an Aussie i am ashamed of what this company doe's to small business owners and keeps doing. By now people should know what this company doe's........so stupid is what stupid doe's........if you buy speedmaster it's on you. Support small business like broader, because like he said he put's his he...

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 ...

Great information shared by Larry,Chad and Mike on there results,what it does tell me there are no guarantees as Larry and Chad had opposite outcomes on the dyno. On the 4500 plenum I think the extensions don't hurt area like a 4150 plenum but that is me thinking out loud. I am working on a 4150 SV ...

Anybody have pics of their work? DSC03108_1280x960.jpg DSC03114_1280x960.jpg DSC03116_1280x960.jpg DSC03127_1280x960.jpg DSC03140_1280x960.jpg DSC03142_1280x960.jpg DSC03143_1280x960.jpg DSC03144_1280x960.jpg DSC03147_1280x960.jpg DSC03148_1280x960.jpg DSC03154_1280x960.jpg   Impressive work as alw...

I have run the PSI 1277 springs for years and been happy with them. I just upgraded to a PSI 1.30" diameter spring looking for better stability in the valve train to turn 8000rpm. The springs are not much more expensive but I had to get a custom set of retainers from xledyne which were expensi...

I have run the PSI 1277 springs for years and been happy with them. I just upgraded to a PSI 1.30" diameter spring looking for better stability in the valve train to turn 8000rpm. The springs are not much more expensive but I had to get a custom set of retainers from xledyne which were expensiv...

Any idea what these things flow stock? Dart has 2 numbers. Catalog says 238cfm, tech sheet says 210. Just curious if anyone has ever flowed a set. I went back through my notes Intake 210cfm - 0.500" lift @ 28" Exhaust 138cfm - 0.500" lift @ 28" They are typical sbc ports that bo...