hey i was wondering do you have to change your springs if you do a lt4 hot cam swap? my engine is unmolested, just wondering if i would have to do the springs too?

 

You need new springs. The cheapest route is the GMPP LT4 springs. You must
not have done much searching because there is a ton of info out there on springs.

 

You'll need to get the springs, retainers, and new valve locks are also a good idea (and very cheap - $5 or so for the set if I remember correctly)

 

Just posted this on another thread. From GMPP.

GM PART # 12480002
CATEGORY: Engine Camshaft
PACK QTY: 1
CORE CHARGE: $0.00
GM LIST: $771.43
OUR PRICE: $561.60


DESCRIPTION: Gen I - SMALL BLOCK HOT CAM KIT
This off-highway camshaft kit has the major valve train component to convert production LT1 engine for showroom stock racing, or hop up your small block Chevrolet V8 that was originally equipped with a roller tappet camshaft. The 1.6 roller rockers, light weight valve spring caps, special designed valve springs and hot camshaft offers a significant gain in horsepower at a reasonable price. This kit includes the following items: one camshaft P/N 24502586, 16 roller rocker arms kit P/N 12370839, 16 valve springs P/N 12551483, 16 valve caps P/N 10212808, 16 valve keys P/N 24503856, 16 valve spring shims P/N 10212809. Technical Notes: This kit does not include roller tappets. See valve lifter section 0.459 for the lifter kit.