I think they are a very good head for the price.
Better than Edelbrocks in my opinion.
They were on my 394 in my 3500 lb Dakota. Went 10.80 at 121mph.
394 cu 3.79 stroke 4.070 bore
11.4 comp
Eagle H beam rods JE flat top pistons
Lunati .581 flat tappet cam
unported 171cc Promaxx heads
Comp cam roller rockers
M1 intake
1000 cfm Holley carb
These Promaxx heads dont have a lot of runs or street time on them which are for sale now. Have not posted them anywhere yet.
I'm swapping them out for the new Trick Flow 190's.
Let me know if you're interested in them.

Last edited by 1965fish; 07/29/19 06:30 AM.
1965 Plymouth Barracuda Formula S
1965 Plymouth Valiant 200 Convertible
1965 Plymouth Valiant 200 Station wagon 408 6.52 @ 104
2001 Dodge Dakota 394 6.63 @ 103 1/8 mile 10.64 @ 123 1/4 mile
1965 Plymouth Valiant Signet 2DR HT