Author Topic: Trans  (Read 643 times)

Offline gtpete

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Trans
« on: January 02, 2019, 05:35:59 AM »
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.

Offline jeff/21

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Re: Trans
« Reply #1 on: January 02, 2019, 07:14:37 AM »
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

Offline dreracecar

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Re: Trans
« Reply #2 on: January 02, 2019, 09:14:41 AM »
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

Offline gtpete

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Re: Trans
« Reply #3 on: January 02, 2019, 09:42:48 AM »
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.

Offline jeff/21

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Re: Trans
« Reply #4 on: January 02, 2019, 10:20:55 AM »
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

Offline gtpete

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Re: Trans
« Reply #5 on: January 02, 2019, 11:51:30 PM »
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.

Offline Curly1

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Re: Trans
« Reply #6 on: January 03, 2019, 12:15:43 PM »
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.

Offline wideopen231

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Re: Trans
« Reply #7 on: January 03, 2019, 01:17:16 PM »
 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.
Relecting obama is like shooting right foot because it did not hurt enough when you shot left foot

Offline BK

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Re: Trans
« Reply #8 on: January 03, 2019, 07:53:42 PM »
If it uses a coupler I wouldn't think its a problem. If it has a driveshaft you might consider a mount.

Online Paul New

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Re: Trans
« Reply #9 on: January 03, 2019, 08:21:50 PM »
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

Offline gtpete

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Re: Trans
« Reply #10 on: January 04, 2019, 05:02:53 AM »
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.

Offline jeff/21

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Re: Trans
« Reply #11 on: January 04, 2019, 01:21:33 PM »
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