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Author Topic: What to do with a vic jr plenum/porting  (Read 9777 times)
juiced coupe
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« Reply #15 on: December 17, 2015, 10:38:45 pm »

http://professional-products.com/fuel-systems/fuel-rails/professional-products-fuel-rails-for-ford-351w-302-intake-manifolds
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Doing more with less, or something like that.
http://sbftech.com/index.php/topic,20009.0.html

Quote from: Monte Smith
Bottom line, if it was the hot ticket, the fast guys would do it.............they don't

You might need some Titanium rods and a flow bench!  LMAO on floor

I honestly don't get it.

I'm sweating, my heart is racing, my clutch foot is twichin', and my right arm punched the computer screen doing an involentary 2-3 shift while reading all that. 
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« Reply #16 on: December 18, 2015, 05:39:54 am »

I actually have an extra set of edelbrock fuel rails, I was looking last night how to make them work on this vs. buying another set.
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1990 Red LX, 306, 75MM, ported gt40's, Holley SMII, accufab longtubes, 3" exhaust, 4.10's, 318RWHP/316RWTQ
1985 LTD LX 302, ported TW's, XE-264 cam, ported Holley SMII, 75MM-R TB, MAC 1 3/4" longtubes, 4R70W, mach 1 brakes
1988 GT long term project
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« Reply #17 on: March 08, 2016, 07:27:49 pm »

I was mocking this up tonight and the pro products intakes have a tab on the front and back runners so the fuel rails can be attached. This intake of mine doesn't have them, so I could either fab up some tabs and have them welded on, or return these things and use the extra set of edelbrock fuel rails I have. Both would require some degree of fabrication to make them work.

http://professional-products.com/intake-manifolds/small-block-ford/small-block-ford-hurricane-polished-efi-version
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1990 Red LX, 306, 75MM, ported gt40's, Holley SMII, accufab longtubes, 3" exhaust, 4.10's, 318RWHP/316RWTQ
1985 LTD LX 302, ported TW's, XE-264 cam, ported Holley SMII, 75MM-R TB, MAC 1 3/4" longtubes, 4R70W, mach 1 brakes
1988 GT long term project
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« Reply #18 on: April 08, 2016, 07:20:16 pm »

Got some pics of this turd

port
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1990 Red LX, 306, 75MM, ported gt40's, Holley SMII, accufab longtubes, 3" exhaust, 4.10's, 318RWHP/316RWTQ
1985 LTD LX 302, ported TW's, XE-264 cam, ported Holley SMII, 75MM-R TB, MAC 1 3/4" longtubes, 4R70W, mach 1 brakes
1988 GT long term project
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« Reply #19 on: April 08, 2016, 07:21:43 pm »



Fuel rails are ziptied on so I can fab mounts for them.
1262 gasket just for comparison's sake


Stock gasket

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1990 Red LX, 306, 75MM, ported gt40's, Holley SMII, accufab longtubes, 3" exhaust, 4.10's, 318RWHP/316RWTQ
1985 LTD LX 302, ported TW's, XE-264 cam, ported Holley SMII, 75MM-R TB, MAC 1 3/4" longtubes, 4R70W, mach 1 brakes
1988 GT long term project
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« Reply #20 on: April 09, 2016, 10:09:47 am »

you just fab tabs that go under the  bolts and then drill the bottom of the rail
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« Reply #21 on: April 09, 2016, 11:52:43 am »

you just fab tabs that go under the  bolts and then drill the bottom of the rail
There's  couple ways to do this, I was going to use the way that would involve no other holes in the fuel rails. I had actually started to go one route by checking four of the intake bolts in the lathe and truing the top, then drilling and tapping the bolt from the top so I could mount the rail brackets to those, but then decided I'd rather not drill another hole in them and will just fab some brackets to weld on, and use the original holes. I'll get pics up when it's done. I've got some other projects I've got to finish before I start butchering this up. Cheesy
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1990 Red LX, 306, 75MM, ported gt40's, Holley SMII, accufab longtubes, 3" exhaust, 4.10's, 318RWHP/316RWTQ
1985 LTD LX 302, ported TW's, XE-264 cam, ported Holley SMII, 75MM-R TB, MAC 1 3/4" longtubes, 4R70W, mach 1 brakes
1988 GT long term project
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« Reply #22 on: April 13, 2016, 09:03:04 am »

Good job, looking forward to seeing results.
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« Reply #23 on: June 18, 2016, 08:01:49 pm »

I think it's ready to go back to the welder for welding up the fuel rail mounts. I opened up the ports to match the edelbrock heads on my 306 that was in the red car. I cut out some of the flashing between ports, just because, and did some work as suggested on the plenum. Any more suggestions let me know.


* IMG_1644.JPG (2535.23 KB, 4000x3000 - viewed 150 times.)

* IMG_1645.JPG (2319.88 KB, 4000x3000 - viewed 142 times.)
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1990 Red LX, 306, 75MM, ported gt40's, Holley SMII, accufab longtubes, 3" exhaust, 4.10's, 318RWHP/316RWTQ
1985 LTD LX 302, ported TW's, XE-264 cam, ported Holley SMII, 75MM-R TB, MAC 1 3/4" longtubes, 4R70W, mach 1 brakes
1988 GT long term project
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« Reply #24 on: June 18, 2016, 08:08:19 pm »

Entrance to ports through the plenum


* IMG_1646.JPG (2668.21 KB, 4000x3000 - viewed 156 times.)
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1990 Red LX, 306, 75MM, ported gt40's, Holley SMII, accufab longtubes, 3" exhaust, 4.10's, 318RWHP/316RWTQ
1985 LTD LX 302, ported TW's, XE-264 cam, ported Holley SMII, 75MM-R TB, MAC 1 3/4" longtubes, 4R70W, mach 1 brakes
1988 GT long term project
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« Reply #25 on: June 20, 2016, 01:09:09 am »

I can't tell if it's the pic angle or what, but there appears to be a small ridge at the roof entrance to the corner ports in the last pic.  Is that intended or should it have more of a radius?  Or is it not a true representation of the entrance?

I'm asking not criticizing David.  You've done a nice job with that intake.
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I often have tires with just too much tread or a fuel tank that is just too full. Accept no substitutes!
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« Reply #26 on: June 20, 2016, 09:35:32 pm »

I can't tell if it's the pic angle or what, but there appears to be a small ridge at the roof entrance to the corner ports in the last pic.  Is that intended or should it have more of a radius?  Or is it not a true representation of the entrance?

I'm asking not criticizing David.  You've done a nice job with that intake.
I think it's just the way the picture is, plus the ports kind of lean toward the turn as they make the turn to the head, so one side is a little lower than the other. Running a finger down it feels relatively smooth, but looks peculiar in the pic.
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1990 Red LX, 306, 75MM, ported gt40's, Holley SMII, accufab longtubes, 3" exhaust, 4.10's, 318RWHP/316RWTQ
1985 LTD LX 302, ported TW's, XE-264 cam, ported Holley SMII, 75MM-R TB, MAC 1 3/4" longtubes, 4R70W, mach 1 brakes
1988 GT long term project
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« Reply #27 on: May 13, 2017, 01:00:50 pm »

I put my turd on the dyno the same day as my son's. I first ran it with a vic jr, and an elbow, then swapped the elbow for a 4 hole throttle body. The elbow made a bit more power at the top end only, but the 4 hole throttle body made more average power and torque. I used a stock DB1 processor, and it worked much better with my 306 and Jay cam than it did with the B-cam, all hail B-cam Spt at PC
The engine now in it  is the 1986 flat top with valve reliefs, and a set of mildly ported GT40s, B cam, cobra 1.7s, and 1 3/4 longtubes, full 3" exhaust. I'm going to swap the ported truck lower, with my slightly modified Holley SMII upper, should have some track results next weekend.
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1990 Red LX, 306, 75MM, ported gt40's, Holley SMII, accufab longtubes, 3" exhaust, 4.10's, 318RWHP/316RWTQ
1985 LTD LX 302, ported TW's, XE-264 cam, ported Holley SMII, 75MM-R TB, MAC 1 3/4" longtubes, 4R70W, mach 1 brakes
1988 GT long term project
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« Reply #28 on: May 13, 2017, 06:52:32 pm »

I put my turd on the dyno the same day as my son's. I first ran it with a vic jr, and an elbow, then swapped the elbow for a 4 hole throttle body. The elbow made a bit more power at the top end only, but the 4 hole throttle body made more average power and torque. I used a stock DB1 processor, and it worked much better with my 306 and Jay cam than it did with the B-cam, all hail B-cam Spt at PC
The engine now in it  is the 1986 flat top with valve reliefs, and a set of mildly ported GT40s, B cam, cobra 1.7s, and 1 3/4 longtubes, full 3" exhaust. I'm going to swap the ported truck lower, with my slightly modified Holley SMII upper, should have some track results next weekend.

It's good to hear that you are making lots of changes to test out, I hope you get it running very fast, and are happy with it too.

What two TB's did you compare, and I'm assuming  the one with the elbow was a big 90mm plus size? I'm asking also because I'm wondering what size ballpark I should be in for a 351 Clevor I want to build. I will use an elbow so I can partially mount an old 70's air cleaner on top. I haven't seen an elbow with an angle to match the old snorkel inlet part, I may have to make such a thing. So what's the right TB size to feed a 6000-6500rpm 351? The intake I'll use is a big single plane like the Victor Jr etc.
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Don

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« Reply #29 on: May 13, 2017, 07:31:22 pm »

What two TB's did you compare, and I'm assuming  the one with the elbow was a big 90mm plus size?
Yes 90MM with a 6061 elbow, and then a 4 hole mass flo 1000 cfm throttle body like this one
http://www.promracing.com/parts-accessories/throttle-bodies/1000-cfm-throttle-body-with-tps.html
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1990 Red LX, 306, 75MM, ported gt40's, Holley SMII, accufab longtubes, 3" exhaust, 4.10's, 318RWHP/316RWTQ
1985 LTD LX 302, ported TW's, XE-264 cam, ported Holley SMII, 75MM-R TB, MAC 1 3/4" longtubes, 4R70W, mach 1 brakes
1988 GT long term project
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