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by frnkeore
Sat Mar 06, 2021 1:59 am
Forum: Chassis / Suspension / Body
Topic: Mustang Body Roll
Replies: 24
Views: 287

Re: Mustang Body Roll

I can see that you understand roll couple. Now tell us what happens when the engine torque, exerts chassis roll, please. Normally, a vehicle has it's roll center lower, in the front, that is to transfer weight, to the front and that is accomplished by chassis roll. I'm suggesting (for a drag race on...
by frnkeore
Fri Mar 05, 2021 1:51 am
Forum: Chassis / Suspension / Body
Topic: Mustang Body Roll
Replies: 24
Views: 287

Re: Mustang Body Roll

Most people do know that weight transfer, is a product of CG position x acceleration. It became obvious, back in the days (1960's) of the original "funny Cars". What I was talking about is the leverage of the suspension of one end over the other (Front vs Rear). The chassis moves about the roll cent...
by frnkeore
Thu Mar 04, 2021 1:55 pm
Forum: Chassis / Suspension / Body
Topic: Mustang Body Roll
Replies: 24
Views: 287

Re: Mustang Body Roll

With all four wheels on the ground, roll couple transfers weight to the end that has the lowest roll center (usually the front). I suppose you might gain traction, off the line, with a lower roll center, in the rear. But, if the tires have enough traction, to raise the front, at launch, with the whe...
by frnkeore
Wed Mar 03, 2021 2:11 pm
Forum: Vintage/Classic/Historical Engine Tech
Topic: Ford 289 Camshaft Manifold Carburetor
Replies: 21
Views: 363

Re: Ford 289 Camshaft Manifold Carburetor

Bill, are these the lobes your talking about? If so, what lobe would you use and would you add Ex duration? NOSTALGIA PLUS™ HYDRAULICS Designed to mimic the sound of the great engines of the past while improving performance by applying today’s design techniques, these profiles are used in our Nostal...
by frnkeore
Wed Mar 03, 2021 1:21 pm
Forum: Engine Tech
Topic: Cam C/L selection - Fiat twin cam
Replies: 15
Views: 425

Re: Cam C/L selection - Fiat twin cam

After posting here, I decided to find my timing, for the Big Valve Hart. It was 56/80, in the Kent listings but, I saw Fiat cams listed there. Kent has this cam: FT11 COMPETITION 2500-6500 .426” .418” 308° 52/76 76/52 265° 102° 102° .008”. Have you guys tried it? It seems to be about the same as the...
by frnkeore
Tue Mar 02, 2021 1:33 pm
Forum: Vintage/Classic/Historical Engine Tech
Topic: Ford 289 Camshaft Manifold Carburetor
Replies: 21
Views: 363

Re: Ford 289 Camshaft Manifold Carburetor

Geoff, thank you, very much, for your advice. I think your one of the very best engine builders in the US, especially on SB stuff. I intentionally left SSR alone, to see what it would do with the ball end mill, I used to start the port work (inside and out side radii). Besides that, as a person that...
by frnkeore
Tue Mar 02, 2021 3:03 am
Forum: Engine Tech
Topic: Cam C/L selection - Fiat twin cam
Replies: 15
Views: 425

Re: Cam C/L selection - Fiat twin cam

I don't know if it will be any help, at all but, the car pictured in my avatar had a 1600cc, Lotus/Cosworth engine, in it. Called a Big Valve Hart, it was the highest hp engine, of that type, before going to the 4 valve BDA. They had 1.75 intakes (45.5 mm) and 1.44 Ex (36.5mm). The lift was 11mm but...
by frnkeore
Tue Mar 02, 2021 2:18 am
Forum: Vintage/Classic/Historical Engine Tech
Topic: Ford 289 Camshaft Manifold Carburetor
Replies: 21
Views: 363

Re: Ford 289 Camshaft Manifold Carburetor

Add in at least $2000 in professional porting and valve work and then I've seen it happen. Geoff, would have to speak to how much he had in his heads, on his 450+ hp 289 EMC engine. I played around with a set of C6 heads, w/o touching the SSR and got 196 cfm @ .500. Just 1.9 LS valve and blending t...
by frnkeore
Mon Mar 01, 2021 6:03 pm
Forum: Vintage/Classic/Historical Engine Tech
Topic: Ford 289 Camshaft Manifold Carburetor
Replies: 21
Views: 363

Re: Ford 289 Camshaft Manifold Carburetor

If the rules allow, I would go with at least a Edel 2121 or better a 7121. A little less weight, too. A stock 271 HP cam (228 @.050, 114 LSA), that manifold, headers and a good valve job, would get you 280 hp. At least 300 hp, with the 7121, 230 @.050 on 108 or 109 LSA and a little bowl work. You al...
by frnkeore
Mon Mar 01, 2021 3:07 am
Forum: Engine Tech
Topic: Cam C/L selection - Fiat twin cam
Replies: 15
Views: 425

Re: Cam C/L selection - Fiat twin cam

Geoff, is there a formula for for this?
by frnkeore
Fri Feb 26, 2021 4:15 pm
Forum: Vintage/Classic/Historical Engine Tech
Topic: My next debate: origins of the canted valve Ford cylinder head.
Replies: 67
Views: 2254

Re: My next debate: origins of the canted valve Ford cylinder head.

I don't know. One round cylinder with two round valves. Not many layouts that weren't tried before WWII. a 26° intake vs. a 9.5° intake angle doesn't sound like they were following the same game plan though. Just a revision of the BBC. If I change the valve angles on a Mopar Hemi, does it make it a...
by frnkeore
Fri Feb 26, 2021 2:01 am
Forum: Engine Tech
Topic: Dynamic compression calculator
Replies: 27
Views: 625

Re: Dynamic compression calculator

I dont use DCR to build or tune an engine. I dont think anyone should. You are only 10.5:1. Focus your time on your AFR and timing curve.. And im not saying some arbitrary AFR #. spend a few bucks and have it tuned on the dyno, then on the road. or pull your plugs cruising, wot etc I suppose that y...
by frnkeore
Thu Feb 25, 2021 2:27 pm
Forum: Engine Tech
Topic: Dynamic compression calculator
Replies: 27
Views: 625

Re: Dynamic compression calculator

Also curios as to why you don't take DCR into account when building an engine? Isn't detonation a concern on pump gas and isn't DCR used as a good guide for those limitations? I'm also curious about this for street engines. If you have a 400 ci engine and want to build it to peak about 5K rpm, with...
by frnkeore
Thu Feb 25, 2021 2:06 pm
Forum: Vintage/Classic/Historical Engine Tech
Topic: My next debate: origins of the canted valve Ford cylinder head.
Replies: 67
Views: 2254

Re: My next debate: origins of the canted valve Ford cylinder head.

Getting back to the OP. As I said at the beginning, Ford copied the GM design and I think this latest revelation, mostly proves it. This is the summation of the OP: So is this a discussion worth having? Was Ford plagerizing the bbc head or did Ford actually come up with an idea on their own. As I sa...
by frnkeore
Mon Feb 22, 2021 12:38 pm
Forum: Vintage/Classic/Historical Engine Tech
Topic: My next debate: origins of the canted valve Ford cylinder head.
Replies: 67
Views: 2254

Re: My next debate: origins of the canted valve Ford cylinder head.

Another thing I remember about the 426 hemi, is that it took at least 1 year, maybe 2, to even beat out the 392 based hemi, even with factory support.