Re: TF270 accessories
[Re: MestocX]
#2706714
10/14/19 01:47 PM
10/14/19 01:47 PM
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Joined: Jan 2003
Posts: 14,506 So. Burlington, Vt.
fast68plymouth
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 14,506
So. Burlington, Vt.
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They also tell me it has 4* ground in and should be dot to dot to have the proper advance set. I degree'd it to 105.5. So you’re within 1/2 a degree of 4deg advanced. Do you not trust that you degreed it in properly? Frankly, you’re calling everyone under the sun and getting tons of info, much of which is just erroneous. Like the cam advance for example. It makes absolutely zero difference whether there was 0, or 4*, or 50* advance ground into it. You do what’s required to install it where you want it. If it’s in at 105.5....... I doubt you’ll find any magic by moving it......... but, there is only one way to know. And that’s to move it and see what happens. If you bought a cam that had a 108lsa, and had 4* advance ground in it, and stick it in the motor, degreed it in and found it was in at 112. You call the cam grinder and they tell you it should have come right in at 104. So, do you leave it at 112 because the cam grinder(who is not working along side of you while you’re installing the cam) said it really should have come in at 104........or do you move it because it’s not at 104? Do you think there is somehow a difference between the cam being in at 105.5 with the gears dot-to-dot vs the gears being advanced to the +4(or -6, or off a tooth, or any other way imaginable)and the cam being at 105.5? 105.5 is 105.5........ doesn’t make any difference how you got it there.
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: AndyF]
#2706789
10/14/19 06:46 PM
10/14/19 06:46 PM
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Joined: Jan 2007
Posts: 8,042 Mt Morris Michigan
mopar dave
OP
master
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OP
master
Joined: Jan 2007
Posts: 8,042
Mt Morris Michigan
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Good advise Andy . Wish I would have done that, but the chain cover is coming off regardless. If I don't bump the compression up to where I think it needs to be, then a smaller more aggressive cam change may be just the ticket for now. I'm thinking something like a 266/270@50 on 108 and same lift, but more aggressive lobe. something like a 27 or 28. First need to get the springs checked and go from there. It may take me a bit, but I will get this sorted out, I always do. The square jet test went ok. Can't cruise it on the street, but it runs great at WOT. Cruises 11.5-12.5 fat. Wide open was 13.0-13.2 with the bigger .029" HS air bleed in the mix. I think that air bleed will work good in warmer summer weather. Thanks for the help guys.
Last edited by mopar dave; 10/14/19 07:03 PM.
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Re: TF270 accessories
[Re: mopar dave]
#2706791
10/14/19 06:51 PM
10/14/19 06:51 PM
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Joined: Aug 2003
Posts: 43,223 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,223
Bend,OR USA
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Last edited by Cab_Burge; 10/14/19 06:52 PM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: TF270 accessories
[Re: mopar dave]
#2706995
10/15/19 12:52 PM
10/15/19 12:52 PM
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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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Cab, I degree'd the cam with the heads off and used a tool that fits in the intake lifter bore and rides directly on the cam. I didn't double check the accuracy of the cam, but sounds like I should have. Now that the engine is fully assembled, I don't think the tool will fit in there, so this time I will have to measure off the lifters edge. Or, mock it up to read off the pushrod end. That might be an easier way to get an accurate reading w/ the heads still on (but the rockers off, obviously).
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Re: TF270 accessories
[Re: mopar dave]
#2707043
10/15/19 03:57 PM
10/15/19 03:57 PM
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Joined: Jan 2003
Posts: 11,718 Portage,michigan
B3422W5
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 11,718
Portage,michigan
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I'm with you. My class is constantly changing as well. I thought I was done with this go fast stuff, but its in my blood and has been since I was 14,well, maybe 7 is more like it. I know I told Dwayne I wanted a street/strip cam easy on parts when he spec'd this cam and that's what he gave me. I understand and my own fault. I thought I was all grown up now and didn't need to go real fast anymore. I was wrong. I now need to turn this program up a couple notches. I want to run 10 o's or near it, so what ever it takes within reason, more compression, a more aggressive cam lobe that will live on the street and a bunch more tuning. Shouldnt be hard. I had a smallblock i drove everywhere with a roller did that had mild lobes Dwayne did cam on ran 9’s easily at almost identical weight. Just gotta get the combo right. I know you will.
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]
#2707086
10/15/19 07:21 PM
10/15/19 07:21 PM
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Joined: Mar 2009
Posts: 2,464 Sydney,Australia
tex013
top fuel
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top fuel
Joined: Mar 2009
Posts: 2,464
Sydney,Australia
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I'm not sure where it wants to be shifted. I It went thru traps at 6900 RPM The rpm is high ? Converter/trans issue ? You are mid 125-127MPH? I am 130mph @ 6700 with 30"radial Flat tappet 272@050/600 nett lift . @ 3780lbs . 6000 converter shift @ 6500 (faster than 6300) Last time out : 1.439 4.205 6.553 @ 104.17 Best sixty is in the 1.42s Your numbers : "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." Tex
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: tex013]
#2707091
10/15/19 07:43 PM
10/15/19 07:43 PM
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Joined: Jan 2007
Posts: 8,042 Mt Morris Michigan
mopar dave
OP
master
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OP
master
Joined: Jan 2007
Posts: 8,042
Mt Morris Michigan
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That's been my thought too. Leave the vert in for now. My best 1/4 was 10.40@129.75. What's your cubic inch. My gear is a 4.10 with a 28" tire. Gonna switch to a 3.73 late next year.
Last edited by mopar dave; 10/15/19 07:49 PM.
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Re: TF270 accessories
[Re: mopar dave]
#2707115
10/15/19 09:46 PM
10/15/19 09:46 PM
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Joined: Mar 2009
Posts: 2,464 Sydney,Australia
tex013
top fuel
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top fuel
Joined: Mar 2009
Posts: 2,464
Sydney,Australia
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That's been my thought too. Leave the vert in for now. My best 1/4 was 10.40@129.75. What's your cubic inch. My gear is a 4.10 with a 28" tire. Gonna switch to a 3.73 late next year. 505ci@11.0:1 pump gas . 4.1 gear . If you are running a 28"radial rpm is about right , I went 10.25@129.65 right around 7000 with a 28x10.5 Pro bracket radial . That was turning off the line for a 1.45-46 sixty . Now have the 29.5x10.5 Pro BR , 28s didn't like the T brake at least not at that time . Slower et = chassis setup or other ? . NOT HP . You are mph ok for 10.20s . What MPH do you gain in 2nd half of the 1/4 ? If you run 1/4 ? The vert comment was yours I copied . But when I foot braked the 505 with standard port heads , 4150 carb ,it went 10.50 , changed to smaller size vert , went from 5000 to 5800 , same et's . Fitted 4500 same et's more consistent , though didn't have much tuning till I split intake ports and the block . I would be getting the car better before I spent more money . Tex
Last edited by tex013; 10/15/19 09:54 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: mopar dave]
#2707245
10/16/19 11:31 AM
10/16/19 11:31 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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I ran 105.2 in the 1/8 mile and 129.75 in the 1/4. I'm sure the car needs some tuning of its own as well. Double adjustable Vikings are on my list for the front. I have Calverts on the rear that were set on 5 and left at that setting. I will try tightening those up next time out. The mph you posted suggest that the times are 6.4xx in the 1/8 and 10.2-10.3 in the quarter .. work on chassis before spending money on new parts
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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