FrontEngineDragsters.Org Forum
Drag Racing Discussions => Front Engine Dragsters => Topic started by: gtpete on January 02, 2019, 05:35:59 AM
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Hello. What's the option on transmission mounts. Its seams the norm to run without one. I will be running a 351W with a FMX behind it. Now before you all switch off I know its not a Chevy or a PG but at the moment its all I can afford. So with or without ?? thanks again Pete.
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fmx is one big ass heavy trans you would be better off with a c4 just for parts and weight I would run a mount even if it's not bolted solid just to support do you have a mid-engine plate? it was common to run Cleveland heads on a Windsor around here both 2brl and 4brl versions they were used at the drags and oval tracks. sorry off track a couple of years ago a guy was running an altered with a 351w
only saw him once he was having trans problems
any pics
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The car does not know what motor and transmission is in it, be it Chevy or Ford, If its the "norm" to run without a rear mount--- there must be a good reason
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Yep there will be a mid plate. Its a 100-105" FED. Over here in England we cant pop down the local yard for a Chevy and a glide. The FMX will get me down the strip, not as quick as you guys but hopefully a lot of fun till funds permit otherwise. So what we saying gearbox mount or not ? Thanks.
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if the motor is mounted solid and the trans also and the frame flexes the weakest part the trans case or bell housing will break!
in this case a FMX has a big cast iron case and a aluminum bell housing i'm not talking about bolting the trans solid but bolting the stock insulator to the trans and letting it rest on mount supporting the weight
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Sounds like a good idea Jeff. With its iron case the FMX is pretty heavy, I've not weighed it yet !!! But yep make a cross member and rest the gearbox mount on it to help with the weight.
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I had been told not to use rear transmission mount. But I do, sort of. I have the rear bolted down and the bolts are a little long ( Bottomed out) and the holes in the bracket are oversized so it can still move some and flex but it is limited.
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Nev er seen a trans mount in FED.Not that I am expert,but has to be reason. IMO doing so is just asking for problems.Be it busted case or chassis binding on launch and no working with crap. I agree FMX is heavy.
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If it uses a coupler I wouldn't think its a problem. If it has a driveshaft you might consider a mount.
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I race with a FED and he runs urethane mount on the back of his glide engine is out 52”. Some cars are built with mounts
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Thanks for your replies guys. I think I'm going to go with the std insulator bolted to the trans but resting on the on a mount. That way the box can still move about but the mid plate wont have to carry all the mass of the box.
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that's the way I would do it,because you don't have a aftermarket bell housing (I don't think they are available).
good luck, Happy New Year