4mulas
Fixem'up
590/610 tq
470 going to the dyno - HP/TQ estimates
- Thread starter 1967 Cuda
- Start date
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MILO
Well-Known Member
Times 1/4 ,mile or 1/8 I'm a old timer when it was just 1/4 a lot of people mention times without telling how far these days
dusterbing the peace
FABO pyrite member
For a little comparison:
400-470 stroker build--results
More cam, and tuned for dyno competition.
Hoping you have time to tune to 600+
That 108 will sound nice and the shorter duration will be fun to drive, enjoy!
400-470 stroker build--results
More cam, and tuned for dyno competition.
Hoping you have time to tune to 600+
That 108 will sound nice and the shorter duration will be fun to drive, enjoy!
Jeez, ramm knows how to build emFor a little comparison:
400-470 stroker build--results
More cam, and tuned for dyno competition.
Hoping you have time to tune to 600+
That 108 will sound nice and the shorter duration will be fun to drive, enjoy!
Me too.... Looking like I may need to go with a set of ported indy's if my Victor's don't show up soon! I DON'T want to have to wear a dress! lol
Lol, don't worry I won't be getting any new heads anytime soon & I don't want to wear a dress either....no way
Black Duster
Active Member
I really like the 470 low deck engine. With that cam and head it will be a great all around engine.
625 HP 640 TQ
625 HP 640 TQ
PRH
Well-Known Member
Are the heads and intake still std port size, or opened up closer to MW size?
My suspicion is…….the HP will peak around the point where the lifters start to get unhappy.
JDMopar
Well-Known Member
The lifters are hydraulic rollers and are like any hydraulic lifter.....and will go on strike at some point at higher RPM.
Gotcha, I guess I could have went back and read that , i could have answered that myself lol.
Thank you!
It's can be built with a near perfect bore rod and stroke ratios. If one is into those things.
PRH
Well-Known Member
There has only been one engine on the dyno here that used that TF cam.
It was in a 446 with the TF240 heads and the recommended TF(morel) lifters.
The lifters started getting unhappy before 6K……….and the best hp number on the dyno sheet was the line before the unhappiness started(57-5800ish).
I’m confident on that particular build the power dropping off where it did was the result of the lifters giving up.
On the dyno here, only one BBM with a HR cam has pulled cleanly past 6k.
That engine used some high rpm marine lobes and the Comp evolution lifters.
I feel like an 11:1 470 with 350cfm heads and a heavily reworked single plane manifold has the goods to make peak power past 6k, even with the TF cam.
If……..the lifters hold it together that high.
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Apparently in the 1.7-1.8 rod ratio + a 92% stroke to bore ratio, from what I've heard, obviously you can make tons of power outside these ratios, Inefficient power is cheap and easy now days.
Newbomb Turk
Well-Known Member
Lower rod ratio wants a better head.
Yeah that's true, those stupid bbc engines with big ports did pretty well
If you go with the 92% stroke to bore ratio which is supposedly be best compromise for stroke and friction that gives you a 4.15 crank for a 528 revver
Newbomb Turk
Well-Known Member
The B1 head was designed in the mid 1980’s. At that time the stroke length in Pro Stock was 3.75-3.65 depending on bore size.
Over a 4 inch stroke is just reduces the rpm range and rpm is power.
Yeah I'd love to have a hi revving engine
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