r c
Active Member
how many are using mid plates on their big blocks
mid plates
- Thread starter r c
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famous bob
mopar misfit
I knew a guy that had a low 9 second duster , that used a front motor plate , stock rubber trans mount and "no mid plate "
Only 9.42 here but that’s how mine is set up. My old Daytona had a mid plate and came in very handy once. I had a bad oil leak so I bolted the engine in the car minus the transmission and fired it up. Found my oil leak.
famous bob
mopar misfit
Yeah it would be kick *** for pulling the tranny period , I`d think .
The midplate stops some of the ping pong effect when using a motor plate & a stock type transmission mount under hard acceleration & deceleration. I don't have one in my bracket car yet but it will be going in when the 416 is installed. I'm installing one because I noticed a slight deflection of the motor plate some times. When we first set the car up, we took measurements & then took some after the first few passes. That's when we noticed the slight deflection.
yellow rose
Overnight Sensation
Even with the mid plate there should be travel limiters on the engine. You can just use one in one side, but I run them on each side. If you make enough power and get enough hook to warrant an engine and mid plate, you still need something to control engine movement on the X axis.
famous bob
mopar misfit
I built fore and aft limiters for mine ''not that it has hooked up that hard yet!"
Matts440
Well-Known Member
My current build I put one in but using solid motor mounts and a poly trans mount,its a street/strip car just running a mid to help keep the flex stress on the ears of the block with solids.
r c
Active Member
that's good to know thanks everyone
j par
Well-hung Member
Does this count?.. LOL...
That acts as more of a torque strap to keep from breaking the left motor mount under hard acceleration. Breaking the left mount can do detrimental damage under the hood. The limiters act to keep the engine & transmission from moving front to back, or back to front under hard acceleration & deceleration. They are mostly used on higher horsepower drag race cars.
Coffee&Cars
Well-Known Member
This is the only way to go IMO. The mid-plate creates another engine mount that also ties the two frame rails together creating another structural chassis member. A stock tranny mount needs to be used. The limiters are for eliminating fore and aft movement from accelerating, and de-accelerating. The limiters may also prevent your front E ears from cracking caused by this forward and backwards movement. 1K HP? Oh Ya. You need them. (IMHO).
Matts440
Well-Known Member
That's why I did mine solids and mid plate poly trans, wish I went front plate but its all good. Twin turbo set up I want that engine good and solid for the most part.
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r c
Active Member
did anyone replace the dail pins in the block when using the mid plate
Matts440
Well-Known Member
I used a factory replament one when I did mine
r c
Active Member
the thickness of the mid plate would that make the dowel pins short
Matts440
Well-Known Member
True but can still help guide, mines .100" steel. They still worked maybe the replacement ones are a little bit longer not sure. Its been a while, thought I had a picture with the dowels I put in but I don't sorry, i just used these from mancini
I had a machinist make me a pair of dowels 1/4" longer than OEM.
Duane
Well-Known Member
Duane
Well-Known Member
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