frankenstangdrifter

Hey guys. I have a 86 Mazda RX7 project I'm working on. I just picked up a 2005 Buick Raineir 5.3L (LM4) engine. I want to change my cam in the near future before the engine goes into the car. I have watched/listened to many videos on youtube for different cam combos. I really like the Lethal Racing Night Fury cam. It seems all I can find on availability for it is for a LS3 Camaro. Would this cam not fit in my 5.3? I understood (atleast at one point) that pretty much any LS cam would fit in any Ls style engine? Correct me if I'm wrong. Still Got a lot of learning ahead of me in this new LS world Ive entered into.

garygnu

do you want a ls3 cam in a engine with different port design and valve sizes ? you can get a custom cam for not much more .

frankenstangdrifter

I guess what I want is a came for my 5.3 with the same specs as the Night Fury cam.
Cam specs are 233/242 .629"/.629" 113+3 (taken from https://www.briantooleyracing.com/le...-camshaft.html)

Sounds like this (especially at 1:14)

JoeNova

The smaller the engine, the bigger the cam acts. It will not sound the same in a 5.3

jetech

I would call the custom spec cam experts known on this forum. Explain your intent with the vehicle.They will ask you everything they need to know to get you what you want.
The cost will not be prohibitive to get a custom camshaft.Cost is slightly higher but it is spec'd exactly for your ride!