Originally Posted by MILD THUNDER (Post 4487157)

You might go from 73.2, to 73.3! :poopoo:

I pretty much suggested a dominator from the get go on this build. That thread was a whole nother chit show of arguing. You said no way, because you couldn't fit it. Now, you're willing to find room, to fit a spacer under your current carb, and worried your carb is too small?! lol :angry-smiley-038:

I think this time around, you might be best to do your own engine development. What I mean is, taking advice from 30 different avenues, is not necessarily a bad thing, but at the end of the day, strapping the thing on a dyno, and trying out various carbs, various intakes, swapping exhaust, etc. Sometimes, what looks great on paper, doesn't always work.

You know Ryan Retter is flexible with you, and will work with you to try different things on the dyno, and won't nickel and dime you for the time. Theres no point in cutting up your hatch, if its a 10hp gain. Now, if you find a particular intake/carb combo, that nets you 25, 35, 40+hp , you may want to modify the hatch. Same thing with exhaust. You might find 10hp from switching from your manifolds to a header setup, or you might find 50hp. That might sway you to looking into different exhaust, or keeping what you have. But, you gotta do the testing. What works on one guys engine, might not work on yours. BCK spent some time on fine tuning his intake/carb combo. He found what , like 25hp doing so? Thats not a bad gain at all.

We have enough of us here, that I am sure someone would be willing to loan out an intake, a carb, maybe even some spacers, etc, to try .

Originally Posted by Black Baja (Post 4487082)

That cam is too small. Need mid 250's on intake high 250's exhaust 109 lsa cam needs to go in 10 degrees advanced. Something along those line in mid 5xx" motors with 320range heads will be in the 725-750hp range a tic over 6,000 rpm's with compression in 9.5:1 range. They really make a bunch more torque if you put a dome piston in them around 10.3:1

This type of cam will revert h2o

Originally Posted by SB (Post 4487162)

p92 !

Originally Posted by getrdunn (Post 4487167)

So assuming cam has no advance ground into based on the duration numbers you mentioned to install at 10 deg advanced. I see where larger CI engines absorbs duration say for instance from a 454 to a 540 or larger. So with that said would it also be correct to say comparing to 572 builds with different stroke combos the longer stroke build would have lower peak hp rpm than that of the shorter stroke. But back to your original comment I'd guess with the duration you mentioned based on a 540 you'd be looking at approximately 7k peak rpm + or -? If advancing 1 deg = 100 rpm to bring it in around 6k.

Interesting stuff.

Originally Posted by Full Force (Post 4487160)

Pulled mesh out last year haha only have 2 layers you see right through

Originally Posted by getrdunn (Post 4487167)

So assuming cam has no advance ground into based on the duration numbers you mentioned to install at 10 deg advanced. I see where larger CI engines absorbs duration say for instance from a 454 to a 540 or larger. So with that said would it also be correct to say comparing to 572 builds with different stroke combos the longer stroke build would have lower peak hp rpm than that of the shorter stroke. But back to your original comment I'd guess with the duration you mentioned based on a 540 you'd be looking at approximately 7k peak rpm + or -? If advancing 1 deg = 100 rpm to bring it in around 6k.

Interesting stuff.

Originally Posted by Panther (Post 4487188)

Black Baja, what ever happened to the Grumpy heads I sold you a few years ago?

How come we haven't seen each other on the water yet? Or maybe we have and I didn't out 2&2 together? Where do you usually run too?

Originally Posted by MILD THUNDER (Post 4487107)

Wonder if that would put any stress on the lifter tie bars? know a few guys who broke some lifter tie bars with bobs cams. Never really thought about that. [/I]

Originally Posted by dunnitagain (Post 4487093)

Oh hell yes it will break tie bars.