JOHN LAWSON

iTrader: (3)

What type of motor mounts to use in a F-body?

SSactionLs1

i have prothane mounts sitting here...they are 49 from thunderracing.com

quickWS6

Spohn/Madman solid mounts. They add room, drop weight, don't add any more knock, look nice, and they don't add any harshness in the ride.

Nasty N8

iTrader: (33)

Madman won`t sell them any more cracking blocks. Use Prothane urathane mounts. We also stock them.

Nate

KGSloan

here's a pretty good thread on the poly motor mounts:

https://ls1tech.com/forums/showthrea...t=motor+mounts

JOHN LAWSON

iTrader: (3)

Thanks, Nate. I'll call you tomorrow to see what all I need, Thanks John.

samz28

get an old pair of mounts before you do the prothane. That way you can make the prothane (they use the existing clamshell) before you start your endeavour. maybe some shop can throw you some old mounts for free.

i didn't know the prothane required the existing clamshells till i read the docs. i just let the mechanic handle it.

quickWS6

I only heard of a couple of guys that cracked a block with them. One was Harlan, and the other was one of Madman's cars. If I was pulling that kind of power, I'd go to a motor plate anyway. I never heard of any car that ran slower then low 10s have any problems.

Pro Stock John

iTrader: (34)

I am running Prothane motor mounts.

Fulton 1

iTrader: (9)

Prothane mounts here too. Install can be kind of a PITA, but very worth it IMO. FWIW, I noticed very little difference between the driver's side only mount and both poly mounts.

MADMAN

iTrader: (4)

None of my cars cracked blocks. I just feel a motor plate is safer.

Ron@Vengeance

iTrader: (51)

Ive been 9.90s several times with Brians(Madman) solid mounts. Dont really notice theyre there. I will be going with a full plate with my new setup though..

Mike K.

I think I am gonna swap out for some prothane mounts while my engine is out. I may as well,, plus my motor was bouncing around pretty bad so this should help.

Street Racer

iTrader: (65)

I have had Spohns solid mounts on my car for almost a year and no problems....

JOHN LAWSON

iTrader: (3)

Thats part of the problem, I bought the car as a roller. Some of the parts like mounts I didnt get. So the search is on. Thanks John.

Dope

iTrader: (2)

It takes 5 mins to swap them out. If you can do the rest of the work (which is 100x harder), why let a mechanic swap out the mounts from the clamshell? Seems backwards to me...

Dope

finalymodded

I have poly mounts also. changed them at same time as I swapped motors so it was pretty easy. I noticed some increase in vibration, but I installed the poly tranny mount at same time so that could be the culprit.

Reckless

iTrader: (9)

Let me know if you need some help buying some mounts from ebay or something John. OBTW, John will be transplanting his Cartek 427 from his 10.4 2000 C5 into what used to be Sean Freese's car.