Dear Forum,
Can anyone advise if machining is required to install Comp 995-16 valve springs on a 1969 Pontiac 400 with No. 48 Heads and if so is there detailed requirements on the web?
Thanks
1969 Pontiac 400
Moderator: Team
Re: 1969 Pontiac 400
Im pretty sure we had to cut the seats on the set we did.I do know we got rid of the factory 2 pc valves and went to the RA IV length valves.Do not run the stock valves!Tom
Re: 1969 Pontiac 400
And another thing is check the diecast aluminum front timing cover assy. that also mounts the water pump for corrosion. If it corrodes and leaks anti-freeze, it goes right into the engine.
My B-I-L had one corrode on his '67 'Bird's 400 engine way back years ago is how I know this may happen.
pdq67
My B-I-L had one corrode on his '67 'Bird's 400 engine way back years ago is how I know this may happen.
pdq67