70 (496) Build Thread
I debated doing a build thread but why not.
Some time back in November I started looking at swapping out my YearOne Crate 350 for something with a little more, "umph." I talked to a few sources about buying another crate motor, discussed having a motor built by various engine builders, know someone with a 427 just sitting in the shop waiting for a home, etc. I even considering doing the LS thing for a while but the more I thought about it the more I realized a 70 Chevelle NEEDS a big block. Fortunately timing was on my side because at the same time I was doing my research Bill (Billscamino) was doing his 50 thousandth engine swap and was preparing to pull his nearly new 496 from his 67 sedan. I put my 350 on Craigslist and around 2 weeks later I was pulling the crate motor which was headed out to Texas to find a new home in a 70 something Chevy truck.
Fast forward a few weeks and Bill dropped his short block off and the ordering frenzy began.
I did what everyone in my shoes should probably do and that was contact both Mike Lewis and Chris Straub. The rotating assembly was already supplied by Chris and consisted of a Probe forged crank & flat top pistons. Chris also supplied me with the balance & flex-plate while Mike was able to put a nearly complete top-end kit together for me (would have been complete but I just didn't think to order a few things.) We decided on AFR 290s and had them milled down to 104cc as well as a port-matched Air Gap intake. Patrick at Prosystems was contacted and a carb order was placed.
In building this engine I told Mike I had a few requirements. I wanted a big block that had enough vacuum to run power brakes with the A/C on in the Georgia summer, I wanted it to be a hydraulic roller for longevity & maintenance purposes, wanted to be in the mid to high 600 horsepower range while maintaining as much of that big block rumble as possible. He had a 240/244, 632/632, 110LSA cam ground which should put me around 650 horsepower I believe.
Here is the rest of the build list
Doug's D316 Headers
MSD Pro-Billet HEI
Mike Lewis Push rods
Carter Mechanical Fuel Pump
Magnaflow 3" x-pipe system
& about 150 other things on a long spreadsheet.
Fortunately, or not for my checking account, this was not just to be a simple motor swap. Along with the motor coming out I decided to upgrade the 14" SS wheels with new 15" Specialty Wheel SS style 15x10 & 15x7s. I mounted some MT Sportsman S/T on all 4 corners (295/50 on the back). But wait, that is not all. I already have UMI tubular trailing arms (upper & lower) so I decided I wanted to replace my worn out front A-Arms with the Tubular Upper & Lower A-arms (with tall ball joints), along with all new spindles & brake hardware. I always planned on using 15" wheels so larger brakes were out of the question but I did purchase new Wilwood D52 dual piston calipers and SSBC Big Bite Cross Drilled rotors. I removed both front & rear UMI sway bars and in their place went an H&R Parts n Stuff rear Anti Roll bar. Going to wait and see if I need to put the front back on but the plan is to leave it off. Wrapping up the suspension will be all new cross link, tie rods, idler arm & Jeep Grand Cherokee steering box.
Last edited by fleming23; Jan 29th, 12 at 10:44 PM.