Ron I and many others would like to know whats been done to it. Perhaps a sticky with links in 1 post for all thats been said.
:2thumbs:
GP, it's a pretty basic build :
-stock crank
-stock rods
-.030 heavy 6-pack replacement pistons
- Custom solid flat tappet camshaft
- mild port edelbrock heads
-Street dominator intake manifold & 850dp carb
-MP distributor/MSD 6al box/Firecore 50 ignition wires/NGK plugs
-TTI 2in headers (1 7/8 would be better)
-X pipe exhaust system with Ultraflow mufflers & tailpipes
-727 trans with good internals & TA manual valvebody
-9.5in Dynamic street/strip converter
-Dana 60/ 4.10 gears
- SS springs with CE adjustable shocks on all 4 corners
* the BP is a full interior 4100lb (raceweight) street car with power steering and functioning heater, wipers, power steering etc...
Ron
That sounds like a alot of convertor. Your right it sounds like alot of the members builds or even tamer. So it seems the difference is the details, duh. Sorta like how 318 2 barrel NHRA 'stock' drag cars can run 13's.
Ron / mods -- You might want to move this to the "proven combos" section ?
Quote from: Rolling_Thunder on November 03, 2009, 10:46:25 AM
Ron / mods -- You might want to move this to the "proven combos" section ?
I agree 1000%! :cheers: One would call this the big Black Pig that could! :2thumbs:
Here's some follow up data on this build.
(1) The heads were Stage 1 ported by Dwayne @ PRH with a competition valve job. Overall improvement was approx 15cfm across the board which is a nice gain. :2thumbs:
* peak flow ; 301cfm intake/222cfm exhaust with some fat mid-lift numbers ! :icon_smile_big:
(2) Dyno results with a 17/8 in primary tube header which was a good choice with 446 cubes. The 2in headers lost 20ftlbs of torque across the board with NO gain in HP. Even on a 500in street/strip stroker the 17/8 primary would be a good choice, inmo. :yesnod:
* peak power #'s ; 535hp/540tq in this configuration with 17/8 header
(3) Dyno results with a 2in primary tube header. This is a good illustration of what happens when you go too big...it hurts power output. This is the configuration that was run in the car ; 2in TTI's with an x-pipe system. It ran a best of 11.68@116 .... i'm sure it would have been faster with the 17/8 tubes....maybe a tenth or two :scratchchin:
* peak power #'s ; 528hp/518tq with the 2in header
Ron
Interesting, and a little bit sobering to think about how much air needs to flow through a cylinder in order to merit the two inch header. :o
Yup, that's why I only used a 1-3/4" on my 505... my little itty-bitty cam & unported heads really didn't warrant the use of anything larger ;D
The 1-3/4" gave me a nice flat torque curve from start to finish.
Quote from: Ghoste on January 06, 2010, 09:37:25 AM
Interesting, and a little bit sobering to think about how much air needs to flow through a cylinder in order to merit the two inch header. :o
It is an eye opener for sure ! :o
Brian (OldSchool) recently dynoed his 850hp 572 build and it actually
lost a small amount of power (5 ftlbs) going from the TTI step header (2 1/8-2in) to his custom 2 1/4 Headers that were fabbed up for the car. That was a suprise to me and Brian as well. :yesnod:
My milder pump gas 572 will be using the 2in TTI's with the 3.5 x 3 Dr Gas X-pipe. I'm going to add a set of cutouts and do some back to back track testing to see if uncapping it is worth any ET. :scope:
Ron
Quote from: Musicman on January 06, 2010, 09:51:09 AM
Yup, that's why I only used a 1-3/4" on my 505... my little itty-bitty cam & unported heads really didn't warrant the use of anything larger ;D
The 1-3/4" gave me a nice flat torque curve from start to finish.
Agreed Mike....the 1.75 tubes are fine with your build given the cam & cylinder head package. In a heavy street car with mild gearing i'll take big torque over horsepower any day of the week. You did good brother ! :2thumbs:
Ron
Thanks Ron :cheers:
ron, how do you think that motor would have run with the 1 3/4 headers like the doug thorleys?
Those are some awesome numbers, Ron at what HP range would you recommend 1 7/8?
Quote from: 71runner on April 02, 2010, 08:55:02 PM
ron, how do you think that motor would have run with the 1 3/4 headers like the doug thorleys?
I'm sure it would've run just fine. There would be stronger bottom end power while giving up a little up top. In a heavy street car torque is more important than horsepower. :Twocents:
Ron
Quote from: BubBABFP on April 02, 2010, 09:52:22 PM
Those are some awesome numbers, Ron at what HP range would you recommend 1 7/8?
I'd say the magic number for 17/8 tubes is 500-625hp give or take a few either way.
The calculator is showing 457 rear wheel horsepower to run 116mph @ 4100 raceweight. The 'ole 446 was doing it's job quite well. :2thumbs:
Ron
So what happened to the 446? Did it get stored away or is it going to another home?
I think he said it's going in the 70?