4150 on 4500 intake.

[Steve.k]

We have a old school 1050 on our sbf but find its alittle more touchy to weather changes than previous quickfuel 850. Thinking about getting the hvh adapter and going the other way. Would the larger plenum of dominator flange intake offer gains ?

[DaveMcLain]

You don't really need an adapter to put the 4150 onto the 4500 style intake for some testing. You can just put it on using two bolts by turning the carburetor very slightly. If it works ok then you can always slot the baseplate holes a small amount and bolt it down using four bolts.

[Racing68]

The newer quickfuel carbs have both patterns on their baseplates.

[Steve.k]

Yes but throttle plate is smaller than open plenum so it leaks. Tried that.

[jeff swisher]

A friend of mine and his brother raced 2 different 427 BBC 69 camaro's.
They had a 4500 intake and used the larger 1050 dominator i think it was for 2 tenths quicker ET than the 850 double pumper.
My friend said the 850 launched so much harder and the ET loss was because the car pulled huge wheelies with the smaller carb.

As you know go straight, not up for best et.

There could be gains but each engine will act different.
Every time I tried the Victor JR on a SBC it became a turd Chevy.
But others love that intake and it works.
So just something for you to try out and find out.

[Steve.k]

Well the new intake and 1050 gave us about 3/100's in 1/8th over850 and strip dommy intake. But then if weather or air changes it really affects dommy carb on this motor.

[andyf]

I used to make a 4150 to 4500 adapter that solved that problem. It sealed off the 4500 plenum and provided a nice rigid surface for the 4150 to sit on. I added a shear plate to the back side with tapered bores and a pressure recovery ring.

[MadBill]

That's a great looking piece with a lot of well thought-out features. When you say "used to make.." does that mean it fell victim to the "everything is a commodity and can be built cheaper and worse." syndrome?

[andyf]

Yep. They cost me about $100 to build so there just wasn't any profit margin on them. Most people don't want to pay much money for stuff like this. If you can price it at $30 or $40 you might sell enough to generate some volume but not a lot of people are going to pay $200 for what looks like a simple spacer.

The price could come down a lot in high volume but I wasn't interested in building hundreds of them just to see if they would sell. I tried to talk BLP into making them but they weren't interested. I thought the idea might work for Holley but I never found anyone at Holley who would return a call.

[statsystems]

Yep. They cost me about $100 to build so there just wasn't any profit margin on them. Most people don't want to pay much money for stuff like this. If you can price it at $30 or $40 you might sell enough to generate some volume but not a lot of people are going to pay $200 for what looks like a simple spacer.

The price could come down a lot in high volume but I wasn't interested in building hundreds of them just to see if they would sell. I tried to talk BLP into making them but they weren't interested. I thought the idea might work for Holley but I never found anyone at Holley who would return a call.

Just curious but how many guys have a dominator flanged intake that want to use a 4150 carb on it?

[AMXstocker1]

we have a qft 950 4150 on a 4500 manifold using just a 2 inch 50 dollar edelbrock adapter and it works ok. however i would much rather have that spacer andyf just posted a picture of i'm not sure about 200 but i'd go 150 for it easy enough, and our car didn't lose anything from the dominator actually picked up et but we also changed gear and the intake picked up .5 mph and 2 tenths in the 1/8th which i think is mostly gear since the mph didn't hardley change. HVH makes a nice 1.5 inch adapter to do this and qft makes a hvh like spacer thats only .75 inches but requires a dual pattern base plate.

[swampbuggy]

Where is andys spacer picture ?

[swampbuggy]

Duhhhh i see it now, im on the road taling a 30 min break on cell phone which i am still learning to operate thanks mark

[Steve.k]

We bought the hvh to try. We think with bigger plenum the fliw will have better turn into runners. The 7300 rpm 358 maybe just a little small for 1050. The intakes for these iron headed Clevelands are all old school. I modified a 3v to fit from chi.

[AMXstocker1]

i would be cautious with a 1050cfm 4150 on a small motor, we had a 1000cfm 4150 on our 7400rpm 427 and it didn't run good at all, i've heard theres not enough wall taper and without alot of motor the fuel goes turbulent, a dominator that had some small flaired boosters probably 980-1020cfm not sure was worth .4 in the 1/8th and 10mph over that 1000cfm 4150 and our 950cfm 4150 thats on the car now seems to be just as good as the dominator. Disclaimer we are on E85 which is a heavier fuel and is more sensitive to signal i believe.