Engine performance
Junior Member
Joined: Jul 2015
Posts: 5
Likes: 0
get the exhaust manifolds off an efi 300, just as good as headers and a 10th the price. other than spending 400-600 on a new intake/carb, theres been a number of people that have ground down the stock intake in order to fit a 2bbl carb, and filled any gaps with that putty/metal compound. after that, pricing continues to increase, get a head off of an old 240 inline six which will increase compression ratio and power output. and last would be a performance camshaft. and i read once about a guy who put a turbo on his (completely custom job)
Stupid question, Is the only difference between the 240 and the 300cc engines the size of the combustion chamber? I was looking at some aftermarket stuff from ford six.com and was not sure if the bolt pattern was the same?
Junior Member
Joined: Jul 2015
Posts: 5
Likes: 0
get the exhaust manifolds off an efi 300, just as good as headers and a 10th the price. other than spending 400-600 on a new intake/carb, theres been a number of people that have ground down the stock intake in order to fit a 2bbl carb, and filled any gaps with that putty/metal compound. after that, pricing continues to increase, get a head off of an old 240 inline six which will increase compression ratio and power output. and last would be a performance camshaft. and i read once about a guy who put a turbo on his (completely custom job)
New to the F150 world
Joined: May 2017
Posts: 33
Likes: 1
From: SW Tennessee
Any idea what the compression ratio would be on my stock '92 4.9 if I dropped a 240 head on it? Anyone know how much lift & duration the stock 4.9 can handle without needing valve reliefs in the pistons? How about with the 240 head? Thank you in advance!