Big cube n/a combo's
 

Been interested in some of the big naturally aspirated combos lately. What have you guys done? What's the most someone has made with a single 1050/1150? Anyone switched to a big throttle body on the same intake and made any gains?

I will report back in a month or so I had to drive 5 hours last nite to pick my block up. Had the cam tunnel bored out. Got about 5 hours of driving on Sunday to get the block to the next shop to CNC the lifter bores, install lifter bushings, CNC piston bores, hone and re-balance the motor because I just spent a small fortune on a new set of Pistons with all the fancy stuff done to them. This has been a very expensive upgrade especially when you add in my time running around, fuel and $200 citation I got in Pennsylvania. So we will see what happens on the dyno.

How much power are you aiming for?

I think it will go 950 no problem if I put some vacuum on it should be closer to 1000. Everything will be in place to pull vacuum just little nervous about it because of things I've read from people that probably don't have a clue what they are talking about or any buisness discussing it but we will see. It's alot of money and I'm by no means a big money guy cant afford to build another one.

I'm using a conventional head might I add.

Do your research on vacuum and wrist pin oiling, if your going to have extended periods of time at wide open throttle. Sounds like a cool build.

the shop i use does all of that.you could have shipped it and saved yourself a lot of driving,and the ticket.

Tunnel ram?

No problem DLC coated pins. Moly on the skirts. It's not an uncommon thing with these kinds of motors. I think the biggest thing is weeding out all the misinformation on the Internet. It's just like using a Titanium intake valve. I've even said it myself that it shouldn't be done. But it is being used has been being used with great success. But it's not accepted by the "main stream" internet voice. Should it be used in every marine engine hell no. It costs a fortune and in most applications not needed. But in the right application used properly the pros out weigh the cons and it can be used with success. Does every motor need a dry sump? No, but some do. I think I'm at that point with my combination. I think the you can't do this and you can't do that crowd does a big dis-service to the community when they really have no clue what they are talking about. I'm guilty of it. One thing I've learned getting into this project is the more I have an open mind about it the more I learn.

I may have missed it, just curious, what size motor are you building ?

632

I thought you were talking big, 7-800 cid, 10.6 block ?

I wish. Just seen one last nite for the first time that new pro block is a bad mofo. I'm using a 10.2 Dart

Just buy one of these, http://www.sonnysracingengines.com/b...-marine-engine the 10.2 block doesn't leave much room for a decent rod. Best of luck to you and your build !

I've already ran the 632 it has a 6.7 rod in it tore it down at 40-50 hours everything looks perfect. Have you ran a bunch of 632's

What induction ?

No, and I wasn't being smart about it, the biggest one we did was 615 with the 4.625 crank.

If this was directed to me, we made our own EFI from tunnel rams.

Single plane Carb

The rod/ crank angle doesn't bother me a bit. The piston speed scares the piss out of me. When I tore it down this time if I felt there was going to be any issue from the 4.750 crank I would have changed it. But it looked better than a 598 with a 6.635 rod in it so we are going to go with it despite the peanut gallery that has never built one b4.

[ATTACH=CONFIG]535793[/ATTACH]I think if you are running vacuum on your engine you might run into starving your valve guides of oil. I am running 15" of vacuum with dry sump pump on my engines and I sealed off the lifter valley from the crank case so the valve guides don't get starved has a pick up in the lifter valley for oil. Are you running piston oilers? Might want to have them to keep the pistons cool since there will be less oil splash.

Can you tell me more about the carb and intake? I haven't seen anything sub 7000 rpm make that power without dual carbs. I may be doing a 604 project, looking for 800-850. And was thinking I might have to run 2 850-950's on a tunnel ram.

Good heads the rite camshaft a single 4 could do it.
With headers.

Do you have room under your hatches for tunnel rams?

EDelbrock SV-632 1150 ultra Dominator cnc porting. If you want less rpm to make the same horsepower you need more cubic inch and you will make more torque. A 632 with a conventional head will never go over 7000.I wouldn't build a 604.

I ran the 6.8 rod with the BB2, had to go with 6.7 for the Dukes in my 598. I wanted to build a 706 just for fun but ran out of steam. Run what you want, it's supposed to be fun.

Haha. It is fun for the most part especially when you blow someone's doors off and they catch up with you later on and ask you what you have in the boat (no blower) and you tell them a stock 454 with a little bit of cam in it.

Stock 26* valve angle or 24* How many cc is the intake runner?

24* 385

Building raised hatches no matter what to clear headers and any intake really. Raising drives up.

It's not my first choice but it will work. Bought complete motors with Hyd rollers. Refreshing them, going solid roller. Never said 632 going over 7000, just saying in general haven't seen any single 4500 stuff make the power below 7000 rpm. So since that was your goal I'm pretty interested about learning about it.

It's not my first choice but it will work. Bought complete motors with Hyd rollers. Refreshing them, going solid roller. Never said 632 going over 7000, just saying in general haven't seen any single 4500 stuff make the power below 7000 rpm. So since that was your goal I was interested in it and looking forward to learning about. Sorry if I struck a nerve

No nerve struck my man. I was simply explaining the cubic inch and what I'm dealing with. I would go tunnel ram but what you will find in 600" stuff that there is no tunnel ram out there to support it without a ton of work. At that point just get a sheet metal intake made. I've done my research and have been around these types of motors in cars if you want to go single 4 the SV-632 intake is the best single plane out there. It's much bigger than a super victor. If your only going to spin 6000 rpm the SV-565 would be a better intake but you need to use spacers. PM me if you want some info on your 604's.

Thank you will send you pm

Twin 1000cfm throttle bodies. Not big cubes 565cu/in.

What computer sequential injection?

Haltech and I don't know the answer. I think batched.

One giveaway if it has wires going to distributor.
and a crank trigger.
Nice motor what's it in? How does it run?

'92, 27' Fountain straight bottom. Scares the He|| out of 100mph. It's member JimV's (Valako) engine.

Why is it scary? Not stable?