Re: solid motor mounts - poly or rubber trans mount ?
[Re: moparx]
#2743590
02/16/20 02:43 PM
02/16/20 02:43 PM
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Joined: Jul 2004
Posts: 19,317 State of confusion
Thumperdart
I Live Here
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I Live Here
Joined: Jul 2004
Posts: 19,317
State of confusion
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I went with the PST urethane mount and wish I would of done it years ago after the rubber would deteriorate after a few years and sag......
72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....
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Re: solid motor mounts - poly or rubber trans mount ?
[Re: Thumperdart]
#2743597
02/16/20 02:50 PM
02/16/20 02:50 PM
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Joined: Jan 2003
Posts: 1,237 North Central, Indiana
Roughbird72
pro stock
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pro stock
Joined: Jan 2003
Posts: 1,237
North Central, Indiana
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I've been using solid engine mounts and a poly trans mount for years. Thinking about going back to rubber isolator and a strut on the engine, getting old I guess
72 Plymouth Roadrunner 11.08@123.25
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Re: solid motor mounts - poly or rubber trans mount ?
[Re: moparx]
#2743613
02/16/20 03:27 PM
02/16/20 03:27 PM
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Joined: Jan 2003
Posts: 2,923 A shed in England
Tig
master
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master
Joined: Jan 2003
Posts: 2,923
A shed in England
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Ears, a poly 'box mount and fore / aft limiters. Been this way since I installed a 440 in '94
'74 Challenger..9.46 @ 145.9 1/4, 6.001 @ 118 1/8 so far. 4023lb !!! # N/A, Marsh performance 655ci, Indy Maxx, T/R, Indy 600-13 X's, Street legal, pump gas, full interior, Cal-Tracs, mufflers, 3:73's and real 10.5 radials. 9.51 @ 142.4 1/4, 6.003 @ 114 1/8 with our old mule KB, 572-13, 580 wedge. RHD '68 Barracuda Fastback 323ci street/strip. Best ET 13.88 @ 99.03
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Re: solid motor mounts - poly or rubber trans mount ?
[Re: moparx]
#2743734
02/16/20 08:29 PM
02/16/20 08:29 PM
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Joined: Aug 2003
Posts: 43,181 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,181
Bend,OR USA
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Rubber on the tranny mounts as that was the only option back when I put my last car together in 2002 . My current SP CM tube chassis car has a aluminum front motor plate with a bolt in mid plate and a rubber mount on the Powerglide tranny I'm building a new 1965 Dart back half car that is certified to 7.50 ET but I have not dealt with the tranny mount yet, I'm thinking of using a solid front and mid plate and no tranny mount on either a Powerglide or a all out Pro Trans 727 SS trans
Last edited by Cab_Burge; 02/16/20 11:02 PM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: solid motor mounts - poly or rubber trans mount ?
[Re: Cab_Burge]
#2743791
02/16/20 10:59 PM
02/16/20 10:59 PM
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Joined: Jan 2003
Posts: 20,179 Park Forest, IL
slantzilla
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 20,179
Park Forest, IL
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I have a motor plate and poly trans mount in my Valiant.
"Everybody funny, now you funny too."
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Re: solid motor mounts - poly or rubber trans mount ?
[Re: Cab_Burge]
#2743914
02/17/20 12:28 PM
02/17/20 12:28 PM
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Joined: Aug 2008
Posts: 4,070 Mo.
racerx
master
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master
Joined: Aug 2008
Posts: 4,070
Mo.
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Rubber on the tranny mounts as that was the only option back when I put my last car together in 2002 . My current SP CM tube chassis car has a aluminum front motor plate with a bolt in mid plate and a rubber mount on the Powerglide tranny I'm building a new 1965 Dart back half car that is certified to 7.50 ET but I have not dealt with the tranny mount yet, I'm thinking of using a solid front and mid plate and no tranny mount on either a Powerglide or a all out Pro Trans 727 SS trans Even in a 25 series chassis ,there still needs to be a poly/rubber tranny mount?
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Re: solid motor mounts - poly or rubber trans mount ?
[Re: Blucuda413]
#2744154
02/18/20 06:25 AM
02/18/20 06:25 AM
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Joined: Aug 2008
Posts: 4,070 Mo.
racerx
master
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master
Joined: Aug 2008
Posts: 4,070
Mo.
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One item I didn't mention is that I run a JW trans case including a JW tail shaft housing. I'm sure there's extra strength there. curios on what chassis this is in? Stock/probuilt?
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Re: solid motor mounts - poly or rubber trans mount ?
[Re: moparx]
#2744509
02/19/20 09:21 AM
02/19/20 09:21 AM
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Joined: Jan 2003
Posts: 13,365 Marion, South Carolina [><]
an8sec70cuda
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 13,365
Marion, South Carolina [><]
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I use a poly trans mount. Same one has been on the car for 23 years now. I've always been told not to run a solid trans mount so you have some amount of "give", but can't argue w/ blucuda's success. Every time I've seen someone locally try that, they ended up cracking the trans case.
CHIP '70 hemicuda, 575" Hemi, 727, Dana 60 '69 road runner, 440-6, 18 spline 4 speed, Dana 60 '71 Demon, 340, low gear 904, 8.75 '73 Chrysler New Yorker, 440, 727, 8.75 '90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt '06 GMC 2500HD LBZ Duramax
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Re: solid motor mounts - poly or rubber trans mount ?
[Re: an8sec70cuda]
#2744619
02/19/20 02:24 PM
02/19/20 02:24 PM
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Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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ALL cars flex... any two points is a straight line buy if you add a third point it doesnt mean its still a straight line.. same thing goes on a car.. you need to have one point that will give..if not you will break the weakest point.. I run the front motor plate and a mid plate with a rubber trans mount
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