Almost dyno day...another what’ll it make
I’ve refreshed my 400 and it is about ready for dyno time. I needed to replace the leaky rear main so I decided to swap out the 041 cam, get the heads ported, and upgrade to forged rods. Pistons are TRW flat tops from when I first built it 20 years ago.
Here are the new specs:
400 +.030
#13 heads ported to about 230cfm
9.75:1 compression
Factory 1970 intake with the ‘Ruggles mod’ done by me
Crower 60243 cam 228/235 @.050 .479/.494 lift
Rhoads V-Pro lifters
1.5:1 roller rockers
RARE long branch manifolds
Pro Systems 4150 785cfm carb
It will also be backed up by a Tremec TKX instead of the M20 when it goes back in the car.
Any guesses? I’m hoping for around 425HP.
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