- Sep 10, 2019
Welcome, do a search for LS swap or Holley LS swap here on the forum. You’ll find lots of good informationGood morning everyone. New to this forum. I have a project that im about to get into. I have a 87 LS monte carlo with the 4.3 v6. 5.3 swap soon. Is there any trouble I might have? (mounts, mount plates etc) thanks in advance
Saw that on the faceballs... definitely unique.The holley ls gbody swap parts are the way to go. It seems expensive until you get it all done and realize you didn't have to modify anything to make it work. No countless hours searching junk yards and want ads for hopefully the right manifold or mount. Do yourself a favor and spend the money upfront. I just did a ls1 swap on my 79 cutlass over the summer. It was super easy and turned out great.
You could be different and go the newer ls based 4.3 like this.
In regards to the speed Engineering headers, I'd say they would fit darn near perfect with the Holley system. I have them with swap plates which put the motor back further, and had to ding the fire out of at least one tube on each side. Other than that, they are amazing headers for $275, sound great, and look badass as they've started changing colors.Copy and paste from a previous post I made a few months ago-
The holley kit works well but is engineered to make holley money. If you want a drop in solution its a good option, but there are other ways to do it that will save money.
That extra $200-$400 for holley parts may or may not be worth it depending on your abilities, budget and interests.
My favorite I have seen is
CTS-V oil pan
Spohn swap mounts
4th gen F body block mounts
Stock pickup accessories
Allows stock AC pump location which is a huge win.
The speed engineering G body LS swap headers work well in that application from what I understand. Stainless too.