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#1 |
Registered User
Join Date: Nov 2002
Location: Charleston, South Carolina
Posts: 1,370
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Motor Mount Opinion
I'm in the process of building a 355 for my two wheel drive blazer that will be 350+ HP. It will mainly get driven on the street, and I'll beat on it, but I may also run it at the track from time to time.
I've heard that the stock motor mounts aren't that strong. Is this true? Is it worth switching to '73 and up clamshell mounts or aftermarket ones like performanceonline.com sells? I would like to put this motor in right the first time but don't want to spend unnecessary money. Any opinions?
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2006 Silverado CCSB, 1939 Ford Sedan, 1962 BelAir Wagon, 1976 Vega Panel Charleston, South Carolina Last edited by k5hart; 08-27-2008 at 03:51 PM. |
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#2 |
Registered User
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Location: Chesapeake Beach, MD
Posts: 812
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Re: Motor Mount opinion
im still using the factory style mounts in my 71.. i race it often at the track and abuse it on the street. i also plan on a 200hp NX kit later so i guess ill test them out then too.
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71 cheyenne lwb 300rwhp best 1/4 time so far 12.8 @103 ![]() http://i195.photobucket.com/albums/z...en58/001-2.jpg |
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#3 |
Senior Member
Join Date: Jan 2003
Location: daytonabeach
Posts: 22,956
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Re: Motor Mount opinion
put a torque strap on the engine drivers side to limit excess movement and you'll be just fine with stock mounts
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71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY |
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#4 |
Registered User
Join Date: Nov 2002
Location: Charleston, South Carolina
Posts: 1,370
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Re: Motor Mount opinion
Excellent idea. I didn't even think of that route. Cheap and simple. Thanks for the answers guys.
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2006 Silverado CCSB, 1939 Ford Sedan, 1962 BelAir Wagon, 1976 Vega Panel Charleston, South Carolina |
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#5 |
Senior Member
Join Date: Sep 2004
Location: Terrell, TX
Posts: 1,967
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Re: Motor Mount opinion
Never had a problem with mine...I don't race but I tow a trailer loaded down with lumber regularly.
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Kelly '05 GMC Sierra SLE Z71 Bone stock except for new bed rail caps. |
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#6 |
Special Order
![]() ![]() Join Date: Nov 2004
Location: Mt Airy, MD
Posts: 85,859
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Re: Motor Mount opinion
Do the later clam shells bolt right in?
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"BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~ |
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#7 |
Registered User
![]() Join Date: Jan 2008
Location: Chesapeake Beach, MD
Posts: 812
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Re: Motor Mount opinion
i think you need new towers for them to be a bolt in piece, or modify your stock towers. also i think if you use the stock towers without modifications the motor will sit higher.
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71 cheyenne lwb 300rwhp best 1/4 time so far 12.8 @103 ![]() http://i195.photobucket.com/albums/z...en58/001-2.jpg |
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#8 |
Registered User
Join Date: Nov 2002
Location: Charleston, South Carolina
Posts: 1,370
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Re: Motor Mount opinion
I heard the same thing about the engine sitting higher. I think I'm sticking with my stockers until it gives me a reason to change. Thanks for the input everyone.
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2006 Silverado CCSB, 1939 Ford Sedan, 1962 BelAir Wagon, 1976 Vega Panel Charleston, South Carolina |
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