78 z28

[jds 78z]

Im working on putting togather a street strip z28.The car is going to have a 406ci,350turbo with 4:10 gears.Right now i am working on the suspension.I have installed drag shocks ,lift bars,sub frame connectors and moroso trick front springs.I should be getting my axles,gears and posi unit. in today.I hope to have it at the track by mid season.My current problem is what heads to run.I have a stock crank 6"rods,flat top pistons,strip dominator intake and a soild lift cam dur. 287 298 lift 534 555 105c any sugestions on heads to run?I am leaning to a set of alum.what do you all think?I am open to suggestions.

[Jamey Abercrombie]

78 z28,

What type of fuel do you plan on using? If you use a set of iron 64cc combustion chamber heads on a 406 it will get the compression ratio up enough to maybe cause some preignition issues with pump gas. If you use aluminum heads with the cam you listed you may be able to keep your compression ratio up and still drive it on the street a little with pump gas. Just my 2 cents worth.

Jamey Abercrombie

[jds 78z]

Thanks Jamey for the info.I well only be running racing fuel. I want be driveing on the street but once in a blue moon.And that well be to work 10min or to great falls.To see some friends.What valve size would you use and runner size.What i am really looking for is a 7.0 car to run in foot brake.Do you see any problems with my car doing this with this set up.The car hasnt been cut up just the fender wells taken out fuel tank and back seats.

[Joe McCoy]

There are alot of SBC heads available. Just consider the runner size when you decide what you want. That 406 with a decent cam needs air to run. A head with the wrong runner size may disappoint you. While compression is important the air in and out is far more important for going fast. Look at the 9 to 1 compression Busch engines in NASCAR and how well they run. Besides that a lower compression engine holds up better than a 14 to 1 motor. Just alot less pressure on the rotating assembly. You can also go too big so ask some others what they are doing if you know anyone. Cubic inches, camshaft and cyl heads work together to make good HP and torque. JMO. RM