440 budget build what do you think?

[451Mopar]

So your '71 Charger is a 10.60 127 car in the flat lands. Darn good.

No, just smoke the tires worse. I need to work on the suspension to go quicker.

 

[66Satellite47]

I would think you'd have to be at a record setting track (-900) but that would be debatable..
( followed by a mad gnashing of calculator keys lol )

No not me, but that is my dim recollection from back in the day, the MN stocker guys would go to Bandimere and slow down nearly a second. My record setting track was Byron, IL because it had traction.

 

[66Satellite47]

No, just smoke the tires worse. I need to work on the suspension to go quicker.

Ya, the suspension setup sure does impact the ET.

 

[RemCharger]

No not me, but that is my dim recollection from back in the day, the MN stocker guys would go to Bandimere and slow down nearly a second. My record setting track was Byron, IL because it had traction.

WOW. I haven't heard of that much before. I wonder if Denver gets good air once in a while.

 

[66Satellite47]

Well maybe my memory is faulty, but 5000 Ft is sure different than 1100 Ft no matter what the air quality is. The tracks around here at 1000 to1100 will have a density of nearly 3000 most of the time. I don't know what Bandemer sees normally. The guys I knew that went there slowed down a ton.

 

[RemCharger]

We're at 1600 and seems like 4500 more often than not .
Today's our first day and looks pretty damn good so far . We'll see. Could be the best of the year haha

 

[Challenger340]

Well, a couple of years has went by, so here's an update.
Managed to do 12.24 sec with the xe284h hydraulic cam with open exhaust.
Changed to a hughes 250/254 dur 0.588/0.6 lift solid flat tappet cam (changed springs as well) and went 12.0 flat./110mph.
The car still feels down on power after 5000ish rpm. (thought the cam/lifter swap would cure the problem).
Have a msd billet distributor I will install during this winter, hopefully this will help since I'm running a old chrysler dizzy.

My thoughts lately has been on the torque converter, can a bad/miss matched torque converter give the symptoms/feeling of loss of power?

What's your thoughts on this?

View attachment 1214940 View attachment 1214941 View attachment 1214942

Some thoughts...
* what rpm are you shifting at ?
* Still the Performer rpm Intake ? (they have a very poor Port Match if not corrected depending upon Frt/Rear positioning up to ~15% of 2 ports can be blocked)
* What T/Converter are you using ?

Just say'in... I'd like to get more info on yours to identify differences.... as we have a few guys running similar build 440's running high 11's with just the XE284 ?

 

[kjalltrac]

Some thoughts...
* what rpm are you shifting at ?
* Still the Performer rpm Intake ? (they have a very poor Port Match if not corrected depending upon Frt/Rear positioning up to ~15% of 2 ports can be blocked)
* What T/Converter are you using ?

Just say'in... I'd like to get more info on yours to identify differences.... as we have a few guys running similar build 440's running high 11's with just the XE284 ?

Shifting at about 5500rpm (tried different rpms)
Still using the rpm intake.
All the runs was made with the Hughes 3000 tq

 

[451Mopar]

Well maybe my memory is faulty, but 5000 Ft is sure different than 1100 Ft no matter what the air quality is. The tracks around here at 1000 to1100 will have a density of nearly 3000 most of the time. I don't know what Bandemer sees normally. The guys I knew that went there slowed down a ton.

Just looked it up for today DA=9,053.9 feet (May 28, 2022 @ 5:15pm, and it is only 79 degrees out.)
https://airdensityonline.com/track-results/Bandimere_Speedway/

 

[PRHeads]

Here’s a combo from 1990 or 91.......

440+.040, Sealed Power forged pistons down the hole .055”, LY rods.
906’s with 2.14/1.81.......one of my earlier attempts at porting.
A couple years later when I had a flow bench I tested all 8 cylinders, and the avg flow was 239cfm.
Torker II, 850DP, 2” headers, racer brown ssh-44 cam(old DC 292 cam), stock rockers with adjustable pushrods.
GER 10” converter, 4.10’s, 29.5 x 10.5 slicks, SS springs.
Battery up front, mechanical fuel pump, factory 5/16” line, crank driven w/p, full interior, heater, wipers, etc.
A little under 3600lbs race ready.
Went 11.40’s at 117

 

[66Satellite47]

Here’s a combo from 1990 or 91.......

440+.040, Sealed Power forged pistons down the hole .055”, LY rods.
906’s with 2.14/1.81.......one of my earlier attempts at porting.
A couple years later when I had a flow bench I tested all 8 cylinders, and the avg flow was 239cfm.
Torker II, 850DP, 2” headers, racer brown ssh-44 cam(old DC 292 cam), stock rockers with adjustable pushrods.
GER 10” converter, 4.10’s, 29.5 x 10.5 slicks, SS springs.
Battery up front, mechanical fuel pump, factory 5/16” line, crank driven w/p, full interior, heater, wipers, etc.
A little under 3600lbs race ready.
Went 11.40’s at 117

Plenty fast for a stock fuel pump and small line. Good heads.

 

[kjalltrac]

Update.
Had the opportunity to test the new torque converter last weekend.
110mph with old hughes 11" 3000rpm tq
114mph with new custom made 9.5"

Really bad track, my best 60 foot was 1.9076 sec.
I've been 1.68 on a prepped track.
On a good track I believe the car can go 11.6- 11.7s

 

[Challenger340]

Here we go!

 

[kjalltrac]

Mini tubbin the belvedere.
Prep work, 27lbs removed

 

[kjalltrac]

Measure and cutting the stock tubs.
Flatten the recesed edge for more tire clearance.

 

[kjalltrac]

Straightening the outside part of the rails for even more tire clearance.

 

[kjalltrac]

Some grinding and touching up left to do.
Also need to get the support brackets done.