When i bought my car the guy i got it from told me the moter had been swaped to a 350 from the CFI 305 by the owner before him, so i dont know much about my engine. I took off my valve covers yesterday and copied down the casting numbers. Could somebody here maybe find some info on my heads and maybe some info on what kinda cam might have came with them?

heres the #'s- 3973487

and below them- L16-71

Thanks in advance

 

www.mortec.com

 

allright thanks, It says its a 71 350 LT1, what kinda car would this have came in and what cam would have gone with it?

 

A 1971 350 LT-1 motor was available in 1971 Corvettes and Z28 Camaros. It was factory rated at 330 gross BHP in 1971 and 255 Net Horsepwer in 1972.

3972178 Mechanical Flat Tappet
This mechanical flat tappet is used on the 70-71 Corvette and Camaro LT-1. It is a good all around street mechanical cam (ID#3972182). The duration at lash point in degrees (intake/exhaust) is 300/312; duration at .050" tappet lift (intake/exhaust) is 242/254; and maximum lift with 1.5:1 rocker ratio (intake/exhaust) is 435/455. Valve lash is 024/030 and lobe centerline is 116 degrees.

Crane Cams also markets a "Blueprinted" Copy

 

Thanks alot F-BIRD'88, great help.



:hail: :hail:

 

the LT1 wasnt a bad stock engine for the early 70's at all.. if you could post the block casting number that will help us tell what the block is from.. casting number is on the rear of the block behind the drivers side head where the trans bolts up.. also if you look at the front of the engine towards the top of the water pump by the passanger side head there is a small ledge.. it has the origional vin of the car it came in along with a suffix code with is very helpful in determining the origional application.. one thing to keep in mind that all this info is pretty much just monkey spank.. the chances of that being a bone stock engine from taht year thats never been rebuilt are very very slim..

 

thanks, theres alot of gunk built up on it right now ill try to scrap some of it off and find those numbers.