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Search found 160 matches

by Bill Chase
Tue Apr 20, 2021 1:53 am
Forum: Other - For Sale or Wanted
Topic: WTB Amsoil synchromesh.
Replies: 0
Views: 4

WTB Amsoil synchromesh.

Any Speedtalk venders Amsoil dealers? I need 3 quarts of synchromesh as well as some rear diff gear lube for a posi trac D44hd. I want to support you guys that are here supporting Speedtalk and sharing tech with Idiots like myself if I can.
by Bill Chase
Mon Apr 19, 2021 2:08 pm
Forum: Engine Tech
Topic: How much does moving the cam affect peak rpm?
Replies: 26
Views: 1991

Re: How much does moving the cam affect peak rpm?

YES ... In my testing over the years, if you advance the cam and make more power at the top of the RPM range, you probably have an issue with something to do with the exhaust. what sort of things have you found on the exhaust that were lacking that necessitated an advanced cam other than what Camki...
by Bill Chase
Fri Apr 16, 2021 10:02 am
Forum: Engine Tech
Topic: How much does moving the cam affect peak rpm?
Replies: 26
Views: 1991

Re: How much does moving the cam affect peak rpm?

Every engine combo is different. Rule of thumb: if you want to shift the power down in the RPM, advance the cam in 2 degree steps, until it no longer helps If you want to help the top-end power, do the opposite. Make sure you have the P2V clearance to make the moves. Don't be surprised if the engin...
by Bill Chase
Wed Mar 17, 2021 12:04 pm
Forum: Engine Tech
Topic: Camshaft questions for 434 with small heads
Replies: 25
Views: 2459

Re: Camshaft questions for 434 with small heads

Is there anyone specific i should talk who can help me out with camshaft for an under headed engine like this ? Surprised nobody has mentioned it yet... Speedtalk's very own CamKing of Jones cam designs. He has decades of experience with cams for under headed engines that have to run a spec fuel, c...
by Bill Chase
Wed Mar 17, 2021 5:02 am
Forum: Engine Tech
Topic: Holley 850...Made in China?
Replies: 50
Views: 2816

Re: Holley 850...Made in China?

I don't have a problem with the fact production is going overseas. (I do but you can't fight it. That ship sailed 20 years ago). However, there is a problem when the prices being charged are high and the product is an inferior offshore copy. When I was a kid my folks paid a premium for brand name qu...
by Bill Chase
Fri Mar 12, 2021 3:52 pm
Forum: Engine Tech
Topic: 2.5" v 3" exhaust on a 500HP 406sbc ?
Replies: 27
Views: 10783

Re: 2.5" v 3" exhaust on a 500HP 406sbc ?

My 11sec 406sbc runs thru a custom made 2.5" full dual exhaust system with hand made custom 2.5" in/out mufflers of my own design and full tail pipes. The mufflers are a modified tri-flow design but with propriatory acoustic and flow management. No voo-doo, just physics at work. In back to back dra...
by Bill Chase
Wed Mar 10, 2021 5:06 pm
Forum: Engine Tech
Topic: Morel 4737 Lifter
Replies: 1
Views: 714

Re: Morel 4737 Lifter

Bringing this back up, curious why more of the wild street crowd and sportsman racers do not use these. I understand they would be lobe lift limited just like the factory hydraulic rollers are limited in the sbc 880 blocks. But to be able to use factory dog bones, spider, thrust plate. It seems like...
by Bill Chase
Fri Mar 05, 2021 4:51 am
Forum: Engine Tech
Topic: Any downsides to anti reversion mufflers/devices?
Replies: 77
Views: 5752

Re: Any downsides to anti reversion mufflers/devices?

Has anyone measured flow in both directions to determine the difference in flow? I did this once for an intake manifold device, intuitively it looked like it might be AR, the flow difference was insignificant. I ordered a pair of the 3" in /3". Out. Since they were all Dynatech had in stainless. It...
by Bill Chase
Tue Mar 02, 2021 4:43 pm
Forum: Engine Tech
Topic: Any downsides to anti reversion mufflers/devices?
Replies: 77
Views: 5752

Re: Any downsides to anti reversion mufflers/devices?

Has anyone measured flow in both directions to determine the difference in flow? I did this once for an intake manifold device, intuitively it looked like it might be AR, the flow difference was insignificant. I ordered a pair of the 3" in /3". Out. Since they were all Dynatech had in stainless. It...
by Bill Chase
Mon Mar 01, 2021 4:10 am
Forum: Engine Tech
Topic: Any downsides to anti reversion mufflers/devices?
Replies: 77
Views: 5752

Re: Any downsides to anti reversion mufflers/devices?

This is the place I bought all the pieces to make up the 36" long (4"x8") terminator box I used to replace the mid-muffler and the two bullet mufflers on my 2009 G8 GT. https://www.coneeng.com/mufflers.html I can't say how much the increase in performance was from just the terminator box since it r...
by Bill Chase
Fri Feb 26, 2021 3:05 pm
Forum: Engine Tech
Topic: Any downsides to anti reversion mufflers/devices?
Replies: 77
Views: 5752

Re: Any downsides to anti reversion mufflers/devices?

For what it's worth CrateInsider.com's advice on the DynaTech/Hendren / Crate Insider AR "mufflers" is: "the longer the primary is, the closer you want the muffler to the collector; shorter primaries like 12-14" before AR muffler." They say on a 604 circle track crate they're worth 15-25 ft lbs bet...
by Bill Chase
Fri Feb 26, 2021 2:58 pm
Forum: Engine Tech
Topic: Any downsides to anti reversion mufflers/devices?
Replies: 77
Views: 5752

Re: Any downsides to anti reversion mufflers/devices?

These https://www.facebook.com/marketplace/it ... 194022798/are what I was thinking about when I mentioned tips. They can be bought cheap, are usually t304 stainless steel
by Bill Chase
Fri Feb 26, 2021 2:06 pm
Forum: Engine Tech
Topic: Any downsides to anti reversion mufflers/devices?
Replies: 77
Views: 5752

Re: Any downsides to anti reversion mufflers/devices?

Seems that a typical aftermarket high flow catalytic converter case may be usefull as a donor to do a home DIY AR chamber project. You can play with the input pipe inside (diameter, length, protrution, choke taper) and play with the case volume/length +/- I suspect that these may functoon as a sing...
by Bill Chase
Fri Feb 26, 2021 9:58 am
Forum: Engine Tech
Topic: Anti reversion chambers on my 19 Charger 392
Replies: 16
Views: 1879

Re: Anti reversion chambers on my 19 Charger 392

So here are the Stainless Works catless midpipes modified with Dynatech Anti-reversion chambers installed on my 392. This is one of the first production type vehicles publically shown that i've seen with these installed. So I made sure to post on multiple forums so people can see. The Dynatech anti...
by Bill Chase
Fri Feb 26, 2021 9:38 am
Forum: Engine Tech
Topic: Any downsides to anti reversion mufflers/devices?
Replies: 77
Views: 5752

Re: Any downsides to anti reversion mufflers/devices?

For those guys who just HAVE TO buy a cam to get that "classic" lumpy idle, small and fast-enough headers and AR mufflers seem like a good idea, so I have to ask: Do these AR devices reduce the lumpy idle sound? (That could be a "downside" for some people.) (Is the sound primary driven by OVERLAP o...