Re: TF270 accessories
[Re: mopar dave]
#2705512
10/10/19 12:36 PM
10/10/19 12:36 PM
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Joined: Jan 2003
Posts: 11,710 Portage,michigan
B3422W5
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 11,710
Portage,michigan
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Before i did all that i would try to figure out how to get what you have to run up to its potential 500+ inch motor with good heads should run 9’s falling off a log in an A body
69 Dart GTS A4 Silver All steel, flat factory hood, 3360race weight 418 BPE factory replacement headed stroker, 565 lift solid cam Best so far, 10.40 @127 1/4 1.41 best 60 foot 6.60 at 103.90 1/8
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Re: TF270 accessories
[Re: mopar dave]
#2705528
10/10/19 01:18 PM
10/10/19 01:18 PM
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Joined: Aug 2003
Posts: 43,127 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,127
Bend,OR USA
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What do the 60, 330 and 660 Ft. times look like?
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: TF270 accessories
[Re: mopar dave]
#2705546
10/10/19 02:21 PM
10/10/19 02:21 PM
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Joined: Feb 2004
Posts: 34,880 S.E. South Dakota !
bigdad
Still Posting A Lot
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Still Posting A Lot
Joined: Feb 2004
Posts: 34,880
S.E. South Dakota !
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My 67 has a 470 , the CR is 12.5
cam is not wild, its a flat tappet, heads are Victors , more or less OTB ..
Car weighs 3280 with me in it ..
It has run the best of 10.41 to date, we have had lousy summer air here last two years , best 60 to date .1.37 --most often its 1.385
MPH is about 124.5 to 125 most of the time
I think in cool air it will pickup to at least 10.36 to 10.38
The lips of fools bring them strife, and their mouths invite a beating.Proverbs 18:6
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Re: TF270 accessories
[Re: B3422W5]
#2705556
10/10/19 02:47 PM
10/10/19 02:47 PM
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Joined: Jan 2003
Posts: 14,493 So. Burlington, Vt.
fast68plymouth
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 14,493
So. Burlington, Vt.
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Before i did all that i would try to figure out how to get what you have to run up to its potential 500+ inch motor with good heads should run 9’s falling off a log in an A body It’s purely a car/combo problem. His heads have already run well into 9’s with the car they used to be in.
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123 Dealer for Comp Cams/Indy Heads
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Re: TF270 accessories
[Re: mopar dave]
#2705608
10/10/19 04:29 PM
10/10/19 04:29 PM
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Joined: Mar 2009
Posts: 2,459 Sydney,Australia
tex013
top fuel
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top fuel
Joined: Mar 2009
Posts: 2,459
Sydney,Australia
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definitely not living up to its promise . what is rear suspension ? MPH ? I run Crane Gold 1.5 rockers on my 270s , cant help you with headers I run Dougs
Tex
Last edited by tex013; 10/10/19 04:29 PM.
New best ET 10.259@129.65 . New best MPH 130.32 Finally fitted a solid cam, stepped it up a bit more 3690lbs through the mufflers New World block 3780lbs 10.278@130.80 . Wowser 10.253@130.24 footbraking from 1500rpm Power by Tex's Automotive
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Re: TF270 accessories
[Re: fast68plymouth]
#2705618
10/10/19 04:50 PM
10/10/19 04:50 PM
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Joined: Jan 2003
Posts: 11,710 Portage,michigan
B3422W5
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 11,710
Portage,michigan
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Before i did all that i would try to figure out how to get what you have to run up to its potential 500+ inch motor with good heads should run 9’s falling off a log in an A body It’s purely a car/combo problem. His heads have already run well into 9’s with the car they used to be in. Thanks. If you read what i said closely that's exactly what i said. “ with those heads and 500+ Inches it should run 9’s falling off a log in an A body. Obviously the combo isn't right, if it was the results would be different. We are saying the same thing...lol
69 Dart GTS A4 Silver All steel, flat factory hood, 3360race weight 418 BPE factory replacement headed stroker, 565 lift solid cam Best so far, 10.40 @127 1/4 1.41 best 60 foot 6.60 at 103.90 1/8
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Re: TF270 accessories
[Re: mopar dave]
#2705774
10/11/19 06:01 AM
10/11/19 06:01 AM
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Joined: May 2004
Posts: 12,384 Taxes & Virus's R-US, NY
Dragula
I Live Here
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I Live Here
Joined: May 2004
Posts: 12,384
Taxes & Virus's R-US, NY
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Dave,
You and I have kabitzed about my combo, and for what it is, it runs, its not bad.....Why does it run, I like to tinker. We sit around the shop or over lunch some days and look for ways to get more out of it...My heads don't flow $hit compared to what is out there these days. If this thing had real heads, I would be in the low 9's...
Lets talk about what you have and how it runs....As far as compression, I did the Wallace calc thing, and its not as much as you might think.
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Re: TF270 accessories
[Re: BradH]
#2705785
10/11/19 08:17 AM
10/11/19 08:17 AM
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Joined: Jan 2003
Posts: 11,710 Portage,michigan
B3422W5
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 11,710
Portage,michigan
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1. What's your budget for continuing to f%$k with this combination?
2. At what level of performance are you going to say it's good enough?
3. Have you ever heard the old Styx song "Too much time on my hands"?
Want to "proof of concept" your hypothesis it doesn't have enough CR? Put a smaller cam in it to build more cylinder pressure. PorkyPig would have told you to stuff a Hughes HTL6064 in it and see how it responds.
Thats first thing i would try, smaller cam on a narrower( 108) LSA
69 Dart GTS A4 Silver All steel, flat factory hood, 3360race weight 418 BPE factory replacement headed stroker, 565 lift solid cam Best so far, 10.40 @127 1/4 1.41 best 60 foot 6.60 at 103.90 1/8
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Re: TF270 accessories
[Re: mopar dave]
#2705797
10/11/19 08:51 AM
10/11/19 08:51 AM
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Joined: May 2005
Posts: 1,030 ohio
67mprfan
super stock
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super stock
Joined: May 2005
Posts: 1,030
ohio
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[quote=mopar dave. I called Best Machine today and spoke with Chuck about it. , yeah, crazy i know. Also suggested a different carb like a 4150 1050 for this combo. [/quote]
Not apples to apples comparsion but on my race car only I ran faster with the 1050 dominator on the car vs 1000 Holley 4150 carb
71 demon stock stroke 440/indy ez-1 running 10.10 @ 132.14 mph in the 1/4 and 6.36 @ 107.46 mph in the 1/8 not in the same weekend but It did it then I sold it. 67 Belvedere that worked it's way in the 10's
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Re: TF270 accessories
[Re: mopar dave]
#2705803
10/11/19 09:13 AM
10/11/19 09:13 AM
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Joined: Jan 2003
Posts: 15,439 Val-haul-ass... eventually
BradH
Taking time off to work on my car
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Taking time off to work on my car
Joined: Jan 2003
Posts: 15,439
Val-haul-ass... eventually
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1.45, 4.272, 6.626 . The vert may be a tad on the tight side, but if the engine made more power it would make up the difference and stall higher. I don't like harping on this, but here's some data that should put some perspective on how out of sync something is w/ your combination. This was a 10.7 CR RB 452 w/ 305 ( not a misprint) CFM Stage VI heads, 266 at .050 x .600 x 108 solid flat-tappet cam, and a small 1.42 venturi x 1.75 throttle 4150 carb on a standard Victor intake. Engine made ~ 610 HP peak at 6300; ~ 570 torque peak at 4900 E-body aerodynamics... not great. 4200 stall / 4500-flash 9.5 converter; 8% slippage 4.10s; M/T ET Street 275/60R15s w/ loaded radius of ~ 13.7" Best pass launching from approx 2200 RPM, 1-2 shift at 6300, 2-3 shift at 6500, trap RPM 6800+: 60' - 1.454 330 - 4.254 660' - 6.653 at 102.03 1000' - 8.745 1320' - 10.523 at 126.44 Track digital scale showed 3755#s w/ driver right after this pass. Track elevation is 80'; weather conditions for that run were 63*, 70% humidity, 30.05" barometric pressure. No, It's NOT an apples-to-apples comparison w/ your results. But your 60/330/660 times aren't much different than mine. Mine ran out of steam on the big end, though. Here's another long thread from a couple years ago that's also NOT apples-to-apples w/ what we're talking about, but still might be of interest: HERE
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Re: TF270 accessories
[Re: BradH]
#2705821
10/11/19 10:02 AM
10/11/19 10:02 AM
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Joined: Jan 2003
Posts: 14,493 So. Burlington, Vt.
fast68plymouth
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 14,493
So. Burlington, Vt.
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Seems like Dave is just dying to make major changes to a combo that only has a hand full of runs on it. Still no determination on the valve spring situation and the affect that could be having on the lack of top end pull. If you really couldn’t find someone to test the current springs........ they’re not that expensive. Buy something new that is a good match for the cam and just put them in. Less than $200 and a few hours time. It’s your car........ so you’ll go about it however you see fit. He computes my combo to 570hp. That's pathetic in my opinion. Soooo....... you think that if you pulled your motor out, brought it to a reputable dyno service and ran it just like it sits....... it would make 570hp? A motor like that should be 675-700hp. If you did nothing but swap to TF270’s...... you’d be expecting to pick up 100-130hp over your CNC ported Victors....... with zero other changes? That would mean you’d be expecting to pick up 7-9mph in the 1/4 from the head swap alone.
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123 Dealer for Comp Cams/Indy Heads
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