Ok here is the situation I bought a 88 formula with 8 as the 8th vin number (L98, 350) and it runs real hard core for stock with a catback. anyways I wanted to put a little more cam in it so I pulled the engine out and was going to change all the gaskets because it has some leaks....anyways I get the engine half way out and get courious so I happen to walk arround the back of the engine and look at the back of the block and what do I see a big cast GM 5.0L on the back of the block. I got the valve covers off and I see 810 heads which are 350 tpi heads. The car had a slight chop to it for some reason??? The numbers on the cam are on the back of the cam 720500 and 1578 in between the last two cam lobes and d5 in between the last lobe and the rear berring jurnal.

I can only see this cam as the reason the car runs like it does. I raced a friend of mine with a 89 vette and his car runs 13.7s real constistantly and I ran about 3.5 cars behind him. And the car felt like a really low 14 seciond car before I raced the vette but the vette just kind of confermed my thoughts about the speed of the car.

 

3.5 cars behind him at like 80mph?

 

3.5 car lengths is a bunch in a drag race run the casting number on mortec or pull a head to see if you have a 350.

 

I pulled the head and already stated that it is a 305. It says on the back of the block that it is a 305. I also already stated that the engine has 350 L98 heads.

We have a place that is marked a 1/4 mile and when I crossed that point I was at 93mph.

This is what really freaks me out is that it runs the way it does. When we raced I had about 1/2 a car on him untill about the middle of 2nd gear when he flew by me. But I think the cam has a lot to do with why it runs the way it does and maybe the extra flow of the 350 heads made up for the loss in compression.

I already looked on mortech and didn't find a area for finding casting numbers on a cam. The carwanted to lope but it wasnt' hitting hard or anything. I think it is a gm cam of some sort cam but I really want to know what this cam comes out of.

Is there a good place to run cam numbers or am I just out of luck finding out what this cam is. I couldn't believe how strong this car ran as a 305. In my experance a car is about a 0.10-0.15 sec which would put the car anywere from a 14.2-14.4

 

Brock's a friend of mine, and is in my car club. We consistently drive/ride many many cars both faster and slower, and I'll vouch that this car DID feel like a 350. Not only did it run against the Vette (yes, it is a 13.7 Vette) as close as it did, but felt stronger and faster than another friend's 14.7 91 Z Convert....so I'll vouch for the engine's strength. I'm curious as to see what cam it is too, because this car was a freak. Only reason he pulled the engine other than gaskets was to put a cam in it....when he pulled it out, he found the non-roller 305.....

 

Ok does no one know how or were to look a up cam no. at? I can't believe that no one on this site knows...

I refuse.

 

TTT

 

TTT

 

Take the cam to an automotive machinist Or any one else with a dial caliper, and have him measure the cam lift of an intake lobe and an exhaust lobe.
Multiply this by 1.5. this is your valve lift.
Look it up yourself in the tech section on this site.

Measure dimention A and B on cam lobe.
Subtract B from A = lobe lift
lobe lift X rocker ratio (1.5) = valve lift.
Pretty easy Eh....

 

...

 

I am a machinest. But this cam isnt' from a thirdgen I already checked that last week.

I just need a site that I can run the numbers or a site that lists the cam lifts of all gm cams and publish the cam specs and numbers.

It is either a gm cam but more likely a reproduction cam by a company like melling or someone.