Brainstormin' 440 vs 5.9 ...
This is a 440 that was built with the forged TRW low compression pistons, it has all the old school tricks for making power for cheap. Meaning the 452 heads have been I unshrouded and blended along with port matching and shaved to 80cc.
They had mopar SS 1.81/2.14 valves and now they’re Manlys. The spring keeper and retainers were replaced at the same time as the cam. I’ve been using mopars cast rockers that I’ve had for years.
The block is a 1970 block is a hp charger it’s been bored 60 , crank 10-10, Hemi oil pick up, melling HV oil pump that’s blended, polished stock rods with good bolts. The cam is a bit of a compromise because of the compression it’s a little too much duration
but it works, it’s the Mopar 5.57 lift mechanical that I had NOS. The TF heads are big bucks and they should have a good short bock under them, I’ve seen them make 750 on a 4.25 stroke 383 but not a low ball project.
I’ve never been impressed with 440source heads, I’ve seen plenty of problems you would think they could make more power. The best numbers for this engine were 545/525 but I can’t find the sheet. I’ve made 645hp/620tq with 915 heads so I don’t see the need for dropping $2500+ for heads for a street strip car that doesn’t need to run a certain number. My Volare is capable of running low tens going to the DQ..
This is a 440 that was built with the forged TRW low compression pistons, it has all the old school tricks for making power for cheap. Meaning the 452 heads have been I unshrouded and blended along with port matching and shaved to 80cc.
They had mopar SS 1.81/2.14 valves and now they’re Manlys. The spring keeper and retainers were replaced at the same time as the cam. I’ve been using mopars cast rockers that I’ve had for years.
The block is a 1970 block is a hp charger it’s been bored 60 , crank 10-10, Hemi oil pick up, melling HV oil pump that’s blended, polished stock rods with good bolts. The cam is a bit of a compromise because of the compression it’s a little too much duration
I’ve never been impressed with 440source heads, I’ve seen plenty of problems you would think they could make more power. The best numbers for this engine were 545/525 but I can’t find the sheet. I’ve made 645hp/620tq with 915 heads so I don’t see the need for dropping $2500+ for heads for a street strip car that doesn’t need to run a certain number. My Volare is capable of running low tens going to the DQ..