Hey Guys. Been reading bunches of stuff from all sorts of sites about "building" the LA-style 318 i currently have in my 86 W140 Auto 4x4. My current goal is gain the most noticeable power for the least cost. From what i have read the must-do mods are as follows:
Stock Cast Iron Intake and Four-Barrel from a 80's 360 in the JunkYard (along with air-cleaner)
Carb Rebuild Kit for Used Carb
Set of Cheapo Used Headers
Advance Timing and Lighter Springs for the Factory Distributor
I understand the purpose of these mods and with the help of my friend who is a mechanic I'm confident we can do the above mods. However, after reading more and more these things i need a little help making these decisions below:
1) My friend says he can port heads. With this practically free skill available i obviously want to take advantage. However, do i have the #302 casting heads on my factory motor already?? I see most people swap early 318 LA heads for either the 302's or Magnums, however id like to stay away from the mags if i have a decent set of heads already.
2) If i have the #302 casting heads, what should i do with them for the best bang for the buck? Get them milled?? and/or what is the cheapest way to put in bigger valves?? i am a total newbie when it comes to automotive valve train but in researching the 318 i hear people swap the factory 302 valves for the larger 360 valves. Are they buying them used?? I know new valves from Summit would be at least $200 but its not really in my budget...
3) Larger Cam, which to buy??... I plan to eventually run a 35x14.50 tire with most likely 4.10's in the rear and would like to buy a cam only once
even if it isn't the most street able truck with the factory gearing and tires. Also, what is need parts wise other than the cam itself for install??
4)What should i do with the fan?? I hear talk of the viscous fan and electric fan, what would be best with my budget and goals??
Thanks in advance for the help and support guys.