[longhorn70gmc]

Originally Posted by Stano

As the title asks will a big block fit on smallblock frame mounts? I am contemplating building a 454 an putting in my 67, and checkin things out. I have seen it done but what are the pros and cons. I will need to run headers with this motor also. I have forgotten so much since I built this truck back in 2000 its not funny. I was thinking it will work but limits header use or not at all. Thanks in advance folks.

Hey Stano,
Yes,
if your asking about the rubber mounts. Mine are 350 mounts. I am using the original towers. I had to do it because at that time frame there was no body or shops that manufactured any replacements for my 1970 402BB. The mounts are holding up just fine, 01-10 = 9 Years. Only difference is that it takes the motor a little to the driver side instead of straight. Yes, I will eventually replace them, but till then I am not worried or concerned, because everything is running fine and nothing negative has occurred. Nothing different was done, mine bolted right up and the motor bolted the towers no problem. I do recommend if you have the money and can do it right, then I recommend you go that route. I was transferring from El Centro to San Diego and had to make an executive decision to get the truck running and I am glad I did no regrets. My Headers fit with no issues. Good Luck
R/
Billy