Smitty, that is very generous!! My new Holley 1050's literally just showed up today...Are you offering a dyno service? I am also having Jim doing these custom 4150-4500 adapters. I feel like I am to far along to switch up now but they sound like they rock!!! I read your 548 post and they sure proved themselves there!! Can you let me know on dyno and carb pricing??

What im saying is if you get your motor on a dyno over there, break it in, tune it with your setup, its up and running, lets for example say you make 738 hp, norm comes next day, at no charge, you warm up motor, make a baseline w your dominator, you make same 738 hp, norm then bolts on his carb, you make a couple pulls so he can dial it in, lets say you make 756 hp, a 18 hp gain. Now, you wanted 750 hp, bam, you got it and then some, sell the dominators! Too bad you didnt borrow them! Scenario two, makes same hp, thanks anyways norm, no harm, no foul, lol! He recently sent his 3 barrell 4150 to a guy in new york, has two normal front venturis then a oval secondary, made 823 hp on a class iron headed mud truck motor, think he said they made 21 hp over there other carb. Stuffs cool, not cheap though, he gets 800 to 950 to put 15 to 20 hours of work in a existing carb or on top of price of new carb. Myself if i could write a 900 check for a extra 20 reliable bolt on hp i would! Norm wants to break into.marine market, tim full forces QF 1050 made 655 or 654 on my dyno within a hour of norms carb making 673 ish

As far as dyno service, im retrofitting new software and sensors on dyno which will prob be two weeks before its done, would be 750$ to get motor on, broken in, tuned and back off, you bring or buy your own fuel, plugs, etc. I would have to know ahead of time to coordinate it with days i could be there all day, Smitty

Just a thought rob but you could always just buy another 2" spacer and try the norm 4150 carb. Based on smittys ongoing trial and error I would have to say that norms Carb would likely give you near same gains plus or minus a little. Either way you'll have a nice solid reliable build. I don't mean to dwell on the fact how glad I am your keeping the same cam and intake. It would be cool though to see one of norms 4150/850 carbs on your build but then again you have a good foundation and your in good hands with Jim. Try everything you can while given the chance. That's what I've always liked about more power is I've had pretty much free rein of the dyno room without being rushed. But again I know Jim and Tom are pretty tight so really don't matter. Tom is a HP wizard with knowledge that many could only dream of having and then some. I'm referring to the area your in. You also have Dave Wesseldyke down there on the SW side of GR but I have no personal experience with him.

I think your on the right track.

Thanks Smitty, I will keep in touch as I get closer to having these ready!!

If norm came he could bring a 2"4150 spacer to try too, its possible even if your not interested in switching carbs he may still want to come run his carb just to do a comparison, keep it in mind

The real bummer is I just my holley 850's, and it sounds like Norm could have built off of the carbs I just sold... His website says he uses Holley's and being a 4150 I am assuming he starts with either an 850 or a 950. My 850's were only 3 years old and like new

The way I see it if you make a 100 hp gain with basically little bump in comp, heads and carb your doing more than great. I'm surprised Jim didn't talk you into cam swap. Look at offshoreexcursion 572 builds as a comparison with more cam and cnc afr heads with SV intakes if I recall.

That's awesome. Wish there were norms around!!!

I definitely will!! Even if it's not in the budget now if we ran them just as a comparison I would know if they worked for my buold and I could purchase them down the road and get my 20hp when the wallet thickens.