Have you run other 359 hybrids on the dyno?
No, this was the first on the dyno. Not had any ported 359/357 on the dyno yet.
Have you run other 359 hybrids on the dyno?
I got 3 or 4 that need dyno’d…No, this was the first on the dyno. Not had any ported 359/357 on the dyno yet.
I got 3 or 4 that need dyno’d…
I think the carburetor is holding you back on Horsepower.
Just my opinion ( so take it for what it is), could be the intake is too smooth also, as in your getting droplets instead of vapor in the fuel charge.
Got any regular 272s data from the dyno?
Send em in...
Could be the carb for sure. I bet it would like more. I'll have to see what can swap in sometime.
Never had a 272 on the dyno.
Me n Kevin are workin on a 272Send em in...
Could be the carb for sure. I bet it would like more. I'll have to see what can swap in sometime.
Never had a 272 on the dyno.
Cool , I have a 625 Jonsered that has an OEM top end I got from Bobs retirement sale. I'll look forward to your advice.Me n Kevin are workin on a 272
Ima build it, he’s gonna make the holes bigger. I bet @Onan18 has a build thread for that chassis.Cool , I have a 625 Jonsered that has an OEM top end I got from Bobs retirement sale. I'll look forward to your advice.
Me n Kevin are workin on a 272
1 357 at least. Tim’sNo, this was the first on the dyno. Not had any ported 359/357 on the dyno yet.
1 357 at least. Tim’s
Yep could’ve beenThat is correct. But I want to say that was back in the first round of dyno stuff. Before the new system that saves the runs lol
Any recollection as to what that 357 put down Kevin?1 357 at least. Tim’s
I don’t. I just remember it being flat-ish and not rounded up high.Any recollection as to what that 357 put down Kevin?
Yeah it was the first gen unit.That is correct. But I want to say that was back in the first round of dyno stuff. Before the new system that saves the runs lol
I think it’s a mistake.Awesome thread. @Red97, you do super cool stuff.
Do you think an OEM cylinder would make a difference?
I wonder how much affect the 359 case has on performance. Would more case volume be helpful?
Chainsaw Jim extended the transfer lowers on his down to the case feeds. That had to add a lot of case volume.
I’m working on a 359/272 hybrid and was considering going the other way: filling the 359 case feeds with epoxy. Not really because of volume, just because they create a dead space. But it does reduce case volume. Do you think that will be a mistake?
Joe,
I am wondering about case volume mismatch. Have you considered adding some JB weld to the intake floor? Easily reversible and you have that awesome Dyno.
My bet is that the 272 cylinder can’t fill. Very tight cases need less intake duration.
A little less than a 6100i would very much like to know what a ported 357 puts up for numbers. more so i wonder what the one that scott ported for me puts down.