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#21
11-16-2004, 06:57 PM
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I have never seen the urathane mounts, can you post a pic? I ran a 455 and a muncie w/410 gears for years. I went through lots of motor mounts and trans mounts over the years. I made a strap that helped, if you design it right it will do the job and make your mounts last longer. I guess the way you drive it makes a difference as well...
Thats why I went through many...
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1969 Firebird, Tx3-455/468 machined by CVMS E-heads by Dave Wilcox/Comp Cams 300B-6 flat solid 850DP on E-85 by Eric Niefert/T2 1" plastic spacer T-400/PTC 4000/390's/30x9 Hoosier radial slicks,#3400 1.38 60' 6.32 @ 108 MPH at Northeast Dragway NC 5/23/15 (9th pass on new engine) https://m.youtube.com/watch?v=ePCu2v...ature=youtu.be 1.37 60' 6.26 @ 109 half track, 9.86 @ 136 1/4 mile, #3350 11/26/16 at Richmond Dragway (125th pass on new engine) |
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#22
11-16-2004, 07:37 PM
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I just switched from stock mounts to solid on my 72 firebird. It is a street/strip 474, e-heads with a 4-speed. I was afraid of breaking an engine mount. I have to say that the added vibration is very noticable while crusing and also very irritating. I have seen urathane mounts for Chevy's that have a safety feature built in as shown in the earlier post. Do they make one for Pontiac? If not, I will buy new rubber mounts and modify them the way Jim Hand described. Thanks for the tip
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