Albatross

Hi all,

I just got off the phone with Lynn at Mondello Performance. I remembered the name from when I had my Toronado, so I came to this site to see why it was familiar. After reading a few posts, it all came back to me. I am looking for a Hydraulic Roller Cam setup for a 1969 400 G Engine. The bottom end has been freshened up with stock crank and rods, but .040 over forged pistons. I am looking for a cam to maximize the power from this engine. I think 400 should be easy, but 450hp is the goal. I have a set of C heads that are fresh from the machine shop, big valves, gasket matching done, and 82cc chambers and an Edelbrock Performer Intake. Lynn states that they have a cam that can get me over 500hp with no changes to my engine. I don't know much about olds motors, but that seems like a stretch. My toronado had the 425, but it was bone stock with 80,000 miles. It moved ok, but FWD and 2 tons of steel on a wimpy gear ratio isn't going to blow your doors off. I restored that engine with the original carb, cause I wasn't worried about performance.

The car this 400 is going into is a 74 Firebird with a 700r4, 2800 stall, and 4:10 gears. It currently has an olds 350, but I got a great deal on this 400 and it just needs a cam and some assembly. What would you guys recommend? Who's a legitimate cam grinder out there? Comp cams doesn't warm me over. I love their chevy cams, but I'm not sure if they got the stuff when it comes to oldsmobile. I'd like to go with a roller cam. With the low revs of these motors, are roller rockers necessary? Do they make beehive springs for Olds?

Thanks guys!

RetroRanger

contact mark "cutlassefi" on this site. Hes knowledgeable about olds and what works

OLDSter Ralph

PM Cutlassefi on this site.

edzolz

I would never believe anything Lynn told me about Oldsmobile engines.

OLDSter Ralph

x 2 !!!!!!

BillK

Mark definitely knows his stuff. When I did the 307 in my Wife's Riviera I had Crane grind me a hydraulic roller. I wanted on that was as close to the original cam as possible and they were the only ones that would do it. They have several in their catalog.

Albatross

I have a PM going on with CutlassEFI. Seems like a pretty helpful guy and we should be able to figure out a good cam here. I just got to pour through these posts to find out some tricks to make this old G block a better performer.

svnt442

The small bore is the Achilles heel of that block for sure.