Which motor mounts to use, poly or solid? The solids are pretty harsh, comfort wise, but will preform more consitantly (I think). the polys are mre forgiving on the ridability but may have issues under a full load. I will be running a 351 with a manual transmission. Most of the time it will be a street machine but there will be times at the strip. Any suggestions or experiences with either. Thanks
You wont like the solid ones for very long...The poly ones are a bit better. Personally...I would run a good replacement stock mount and put a torque strap/chain on the left side of the engine and bolt that beast down.
ive ran solid mounts in several cars. if the motor is well balanced and the cam is does not lope really bad then they are just fine. i noticed the car react beter to alot of things when i put solid mounts in. it helps stiffen the front end becides giving beter responce to the rearend. i dont think there are poly mounts avaiable for the maverick. make sure to use a solid mount on the trans also. or at least a poly. a rubber one will alow to much flex and the trans housing can get broken. i made my solid mounts by welding tabs from the bottom half of the mount to the top half of the mount. there is also susposed to be a way to put a bolt through the mount so it cant be pulled apart. the torque strap is also a good way to go.
I was always told not to use a solid transmission mount if you were using solid motor mounts. I was told that that is what causes the tailshaft housing to break. No first hand experience, but just what I've heard.
NEVER use solid or poly transmission mounts unless you have a motor plate that mounts the engine AND the frame is absolutely rigid. On a unibody car the chassis flexes enough to cause breakage of the transmission if the mount is not flexible. I use standard engine mounts with a flat head screw through them and a nut on the top side. this way they can compress but they don't extend so they never break. They are still better than poly mounts and a lot nicer than solid mounts (which can break out the block where they bolt to it)
Thank you for your responses. Good information, and I wil take them into consideration making my decision.
