[Stan Weiss]

Originally Posted by performerrpm

i think for the 400s sake, i probably better go ahead and stick with the 288 cam. although i think my 65 backhalve car with jerico 4 speed would have sounded cool af @ 7500rpms. but i do have my original 455 with the same ross/eagle combo already machined and balanced so maybe ill hang the victor and 310 heads on that one instead with that sr cam. maybee the extra cubes might tame that power band a lil.

Yes, the 455 will peak at a lower RPM than the 406. Just a very rough guess of 6700 RPM

Stan

[jwcfbd]

Originally Posted by performerrpm

what do you guys think...im dropping a couple 400 blocks off at the machine shop next week, one for a 434 blower build....the other is just for the helluvit but iam taking the eagle h beam rods and ross pistons and stock crank to be balanced too.

for this extra 400, i have

sm 78cc heads flowing an advertised 310cfm or the edelbrock dports 72cc out of the box.

xr288 cam.

intake could be
victor dominator
torker 2
possibly 66 tripower if this motor makes its way to my 66 although i really want that on a 455 ive got hanging around

what kinda power u think is possible...and how do you guys think the victor would do on smaller cubes like this?

and other than the specific lifters i have the stuff to try out the ls lifter retro fit

This my 400 brought up to a 461 with a Victor on it. Heads are around 320cfm ported by Butler.
https://youtu.be/BVjqcRvOyI4

[Steve C.]

jwcfbd

Camshaft specs ?

Edit: this in the dyno remarks... Custom Comp Cam hyd rollers with intake 245 and exhaust 251

Net valve lift ? The Edelbrock heads, is that rated 320 cfm at .600", .650" or .700" lift ?

.

[Stan Weiss]

Originally Posted by Steve C.

jwcfbd

Camshaft specs ?

Edit: this in the dyno remarks... Custom Comp Cam hyd rollers with intake 245 and exhaust 251

Net valve lift ? The Edelbrock heads, is that rated 320 cfm at .600", .650" or .700" lift ?

.

Steve,
Where are you seeing the dyno remarks?

Thanks,
Stan

[Stan Weiss]

Originally Posted by jwcfbd

This my 400 brought up to a 461 with a Victor on it. Heads are around 320cfm ported by Butler.
https://youtu.be/BVjqcRvOyI4

What is your CR?

Stan

[Steve C.]

Stan,
The dyno video in the remarks with the limited cam info.

I will suggest the the net valve lift might not utilize the cfm flow capability of the cylinder head.

.

[jwcfbd]

Originally Posted by Stan Weiss

What is your CR?

Stan

They told me it 10.9

[jwcfbd]

Originally Posted by Steve C.

Stan,
The dyno video in the remarks with the limited cam info.

I will suggest the the net valve lift might not utilize the cfm flow capability of the cylinder head.

.

Here is a copy of the cam specs.

[chuckies76ta]

This my 400 brought up to a 461 with a Victor on it. Heads are around 320cfm ported by Butler.

Is that a 4150 or 4500 intake? What carb did you run with your dyno session? Thanks

[jwcfbd]

Originally Posted by chuckies76ta

This my 400 brought up to a 461 with a Victor on it. Heads are around 320cfm ported by Butler.

Is that a 4150 or 4500 intake? What carb did you run with your dyno session? Thanks

4150 with a quick fuel brawler 850

[chuckies76ta]

So your combo with the (nice numbers by the way.)
Victor intake
400 to 461cu in.
10.9-1comp.
320 flowing heads
245/251 cam
611 hp 562 Torque

Our 455 to 467 cu in.
Torker 2 intake
10.5-1
300 cfm heads D port
245/252 cam Road paver.
589 h/p 600 torque
950 Quickfuel

I'm wondering if your torque was down because of the Victor Intake?

[chuckies76ta]

dyno sheets

[chuckies76ta]

Originally Posted by jwcfbd

4150 with a quick fuel brawler 850

Ok. So the 4150 would be much better than what the OP is proposing with a Dominator. Wish I would have had one of those 4150 Victor to try when I was doing dyno session. Thanks for the info.

[jwcfbd]

Originally Posted by chuckies76ta

So your combo with the (nice numbers by the way.)
Victor intake
400 to 461cu in.
10.9-1comp.
320 flowing heads
245/251 cam
611 hp 562 Torque

Our 455 to 467 cu in.
Torker 2 intake
10.5-1
300 cfm heads D port
245/252 cam Road paver.
589 h/p 600 torque
950 Quickfuel

I'm wondering if your torque was down because of the Victor Intake?

Thanks Chuck but you have my numbers backwards. HP is 562 and torque is 611. Sounds like we're running very close. My heads are round port and if it doesn't fit under the hood I'll have to revisit the intake. :O

[Steve C.]

A tid bit if interested here....

jwcfbd combo used Comp QXI hydraulic roller lobes.

13455B / 13484B HR110

The QXI Series lobe profiles are designed to provide the highest available valve lift for modern cylinder head ports, along with excellent stability and the broadest
possible power range in hydraulic roller applications. Designed for both street and racing use, these lobes were developed in two degree intervals to allow small
tuning variations between the long and short runners of single 4bbl type manifolds.

.

[jwcfbd]

Originally Posted by Steve C.

A tid bit if interested here....

jwcfbd combo used Comp QXI hydraulic roller lobes.

13455B / 13484B HR110

The QXI Series lobe profiles are designed to provide the highest available valve lift for modern cylinder head ports, along with excellent stability and the broadest
possible power range in hydraulic roller applications. Designed for both street and racing use, these lobes were developed in two degree intervals to allow small
tuning variatio ns between the long and short runners of single 4bbl type manifolds.

.

So does that mean if I need a lower profile intake I should be ok to make the swap?

[Dragncar]

I think we are getting away from a "real" 400.
400 blocks with 4.21 or 4.24 cranks are 455s.
Once you bore a 400 block and put a stroker cranks its for all intents and purposes a 455.

This 400 build, I say DO IT.
Just try both the T2 and 4500 Victor and see which one runs better.
Its part of the fun of the hobby.

[Skip Fix]

This 400 build, I say DO IT.
Just try both the T2 and 4500 Victor and see which one runs better.
Its part of the fun of the hobby.

Yep!

[blueghoast]

Same here, I think you'll be surprised with the victor @ more power.
But I could be wrong too. Go for it.

GT

[Steve C.]

Two conversations going on here, performerrpm and jwcfbd


jwcfbd, I will suggest your cam is not the issue itself. The choice of intake for a limited hood clearance application compared to the level of performance with the Victor intake will need to be taken into consideration.
That and keep in mind your ported cylinder heads have a tall intake port opening, this could influence your intake choice and its ability for a proper port match to the heads.

Note Butler suggests their SPM-5410-2 gasket which is rated with a 2.350" tall port opening.

.