Speed-Talk is running on www.Speed-Talk.com

IMPORTANT: Update your bookmarks to https://www.speed-talk.com/forum/
(Right-click the URL and select "Bookmark this link")

Search found 78 matches

by thedynoguy
Fri Apr 30, 2021 5:39 am
Forum: Engine Tech
Topic: New Holley 80577 950HP Supercharger carb question
Replies: 8
Views: 359

Re: New Holley 80577 950HP Supercharger carb question

to simply change back to a non boost referenced mode, plug the external boost fittings and open a vacuum port from the power valve cavity through the baseplate so it sees full manifold vacuum.
by thedynoguy
Fri Feb 19, 2021 7:44 am
Forum: Engine Tech
Topic: Brawler 750
Replies: 17
Views: 1155

Re: Brawler 750

That's a sh/tbox vac secondary electric choke doorstop. From your description of the motor - put a double pump carb on it. that's always a debate. That said, I've run a bunch of these on the dyno, and they've always run well (100 times better than a Holley). I've never heard back from the customer'...
by thedynoguy
Fri Feb 19, 2021 6:07 am
Forum: Engine Tech
Topic: Recomend A SuperCharger Carburetor Builder? Buying New
Replies: 7
Views: 417

Re: Recomend A SuperCharger Carburetor Builder? Buying New

I've run dozens of Dean Nickerson's carbs on dyno jobs and have never been disappointed. http://www.nickersonperformance.com
by thedynoguy
Fri Feb 19, 2021 6:05 am
Forum: Engine Tech
Topic: Brawler 750
Replies: 17
Views: 1155

Re: Brawler 750

that's the way the Brawler and QFT shiny carbs get when exposed to the elements. It's more cosmetic than anything else. Like the other guy said, try to low ball him if you can live with what the carb looks like. remember though, it will never get any prettier, it will only continue to oxidize. FWIW,...
by thedynoguy
Tue Feb 16, 2021 5:39 am
Forum: Engine Tech
Topic: Super Flow 901 Rebuild
Replies: 6
Views: 549

Re: Super Flow 901 Rebuild

the last time I bought one (15+ years ago?) from Superflow it came in a Grainger box. I just looked on grainger.com and couldn't find it though
by thedynoguy
Fri Feb 12, 2021 4:24 am
Forum: Engine Tech
Topic: Non Responsive Holley VS Carburetors
Replies: 13
Views: 970

Re: Non Responsive Holley VS Carburetors

Brambles wrote: Wed Feb 10, 2021 10:20 pm I just ordered a Quick Fuel SS 780 VS...hopefully not the same issues with that carb...
The QFT (and now Brawler) VS carbs do NOT have the same problem. The secondary opening action is tunable with the needle screw on the side of the vacuum can.
by thedynoguy
Wed Jan 20, 2021 1:09 pm
Forum: Engine Tech
Topic: SBC Proform 850 600/600 Cam Timing / Tuning WOT
Replies: 16
Views: 763

Re: SBC Proform 850 600/600 Cam Timing / Tuning WOT

get rid of the unlite distributor and put in a MSD Pro Billet with a black bushing, a light silver and a heavy silver spring and tune the timing curve from there. Also, I don't care what the O2's are saying, a 69 jet in that 850 is too lean IMHO. Likely a tad to lean in the secondary as well. The no...
by thedynoguy
Sat Oct 31, 2020 10:23 am
Forum: Engine Tech
Topic: Centrifugal supercharger question
Replies: 28
Views: 981

Re: Centrifugal supercharger question

my years of dyno experience have told me that the centrifugal superchargers are softer on the bottom, regardless of the drive ratio. I've run a bunch of marine stuff that the customer's like because the lack of bottom end torque won't blow the drives up
by thedynoguy
Mon Sep 21, 2020 7:52 pm
Forum: Engine Tech
Topic: Engine Dyno
Replies: 34
Views: 1652

Re: Engine Dyno

just be aware that Superflow no longer supports the 901's. Replacement electronics are getting really hard to find. I bought a new 901 in 1988 and it served me well for a long time. When I had a major electronic failure in 2017, I bought the "902" upgrade kit that eliminated all of the old electroni...
by thedynoguy
Sun May 10, 2020 5:49 am
Forum: Engine Tech
Topic: 933 and 140 BBC head castings
Replies: 6
Views: 455

Re: 933 and 140 BBC head castings

the 933 head is used on gen 5/6 engines that are built for generators that run on propane/natural gas. They have real small combustion chambers that will bring the compression up a couple of points and small valves as well. I've run tons of these on 454 engines that are set up for 375- 400 HP street...
by thedynoguy
Sat May 09, 2020 10:23 am
Forum: Engine Tech
Topic: Any Racesaver 305 sprint builders?
Replies: 5
Views: 700

Re: Any Racesaver 305 sprint builders?

Total and complete pain in the ass. A multi step process that drags on over multiple days. None of the engine builders that I dyno engines for do them anymore...
by thedynoguy
Wed May 06, 2020 5:41 am
Forum: Engine Tech
Topic: Milking the oil
Replies: 13
Views: 1168

Re: Milking the oil

what kind of water pressure are you seeing in the engine? Also, what is the thermostat/thermostat housing set up you are using?
by thedynoguy
Wed Oct 30, 2019 5:44 am
Forum: Engine Tech
Topic: 4-71 Blower on a 350 SB Questions...
Replies: 18
Views: 1052

Re: 4-71 Blower on a 350 SB Questions...

I don't know how you can make any decisions without knowing how much boost you are making now. Without that info, you're shooting blind...
by thedynoguy
Mon Sep 09, 2019 6:50 am
Forum: Engine Tech
Topic: Camshaft help
Replies: 17
Views: 1852

Re: Camshaft help

I know I'm going to get beat up for this, but it's Monday morning and I haven't been bashed yet on the inter webs. That engine needs to go on a dyno to see what the problem is. You can throw parts at it all day long, and waste your time and money chasing the problem. There. Bash away...
by thedynoguy
Tue Apr 23, 2019 7:46 pm
Forum: Engine Tech
Topic: Streetability mods
Replies: 67
Views: 5131

Re: Streetability mods

Hey Phil, your thread has officially been hijacked. :lol: I hope you'll stop in when you're back in town...