Rayjohnsons

I have registered for a friend of mine. He has 4 corvettes that he's always upgrading. Trying to get him to communicate with you guys. The first question is should he upgrade the cam in his 68 tri-power. Just bought the car and the intake has been changed to a four barrel however the original came with it. So we will be changing back. He's not happy with the feel or sound of the motor (no side pipes). What is the lift and duration of the stock cam and what would be bigger and better? Thanks in advance.

Vette_DD

The folks in the C3 forum can help you with that, so I'm moving your thread to that forum.

blue427

400hp or435hp?

Rayjohnsons

400

rponfick

You can check the stock specs on any of the major cam vendors sites. They all make retro grinds to match the original factory specs.

I just went through this process on my '69 L71. How much is your budget? After going to all the trouble, I didn't want to put an obsolete flat tappet cam back in there, and continue dealing with the "what is the best oil to run" question. I went with a hyd roller setup from Chris Straub. My engine is still on the stand, so can't comment on results, but Chris has a great reputation.

Good luck. Ralph

Faster Rat

Is it the original L68 engine? Does your friend have documentation? Numbers matching means nothing to the more knowledgable members of this forum. If so, then the car should probably be kept as original as possible. No '68 had side exhaust. If he wants to change the cam (or whatever) for more performance, he should be careful not to change anything that cannot be changed back. In other words, don't cut unnecessary metal and don't throw the old parts away. It all depends on how much money is in his wallet. If he owns 4 vettes, sounds like he has a little extra cash to throw around. Modifying the engine so that it puts out a noticable amount of additional power, along with a lopey idle, will turn off a collector type buyer. If he doesn't care about money, then have at it. There will be one less correct car, making the other correct cars remaining more valuable.