We took the new 331 cu. in. Y block up to the dyno last Tuesday. It was fun and stressful at the same time. Typical dyno day. We played with a few things trying to get it ready to stuff into the 64' Falcon.
cool beans! A wideband on each cylinder....playing with different intakes...should be a lot learned, right there
Best pull with the dual plain ported manifold 513hp@7100 425tq @5200 Best pull with the single plain 532hp@7000 438tq @ 5400
Fantastic numbers for an "obsolete" old war horse. Anything under 3,000 pounds I suggest taking a change of underware with you for the first trip to the drag strip. Frank
View attachment 2688724 1.7 rocker pics 331ci 3.84 bore 3.57 stroke 13.0 compression 1.7 rockers 254 duration .600 lift MSD distributor Ported Mummert Aluminum heads Should be real nice bracket motor. Sounds sweet.
Turning a Y block 7k is impressive enough, the numbers are just showing off. Thums up! Btw that manifold looks killer.
I really like how you came up with that manifold design which is Y block specific. My hat is off to you. don
The pushrods are Smith Bros. .080" wall chromalloy. , 5/16 ball at the bottom for the TREND tool steel lifters.
Mother of gawd! I understand if you dont wanna give too much detail, but ballparkish, how big is the cam? Guessing 250/260ish??
Seven grand huh? Bet that exhaust note was really impressive, very impressive numbers, I'd love to be there and hear that baby run. Congratulations.
Wow, love it when that sort of power is made with the old Y block! I bet some people will look look twice when they see under the hood... 1.7 rockers and .600 lift, I think you have a secret weapon in there..
The bottom end is pretty stock.. -1959 292 block lightened 10 lbs -Ford steel truck crank offset ground to Honda rod journal -Racetec 10cc dome pistons -Molnar 6.125 rods -Oil pump stock. - Mummert Billet timing set -Trend tool steel lifters -
So it's a 292 truck crank then? I suspect your heads are mostly responsible for the impressive numbers...combined with the matching cam/intake of course. I wish I could afford a pair of those heads for mine.
No video. Have about a dozen pics and bunch of dyno info. 22 pulls in one day. But definitley worth doing. Dyno's are nothing but good information.
Hey John, do you have any plans to manufacture enough of those 1.7 rockers to sell? there is only so much valve lift to be had with the 1.54,s .. its got to be a good thing to keep the cam lobe lift smaller and achieve more valve lift by changing rocker arm ratio.
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