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Old 02-09-2008, 07:38 PM   #1 (permalink)
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non vortec intake to vortec intake

Can a old school SBC intake be fixed to work on vortec heads. I have a tunnel ram intake that i got for free and want to see how it would perform on some vortec heads.
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Old 02-09-2008, 09:30 PM   #2 (permalink)
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Yes but its not easy you have to weld a 1/2 bead around the intake ports then port them out to match the vortech heads and then have the intake resurfaced I use to do it all the time to put TPI intakes on vortec heads. It’s cheap if you can do the welding and the port matching but if you have to pay for it, it may not be worth doing. A machine shop will charge 25 to 50 to resurface the intake.
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Old 02-09-2008, 09:37 PM   #3 (permalink)
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didnt someone at some point sell an adapter type wedge a while back? Im talking when vortecs first came out.
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Old 02-09-2008, 09:50 PM   #4 (permalink)
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An adapter wedge might make it bolt up but it isn't going to take care of (not well anyway) the fact that the Vortec runners are taller.
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Old 02-09-2008, 10:04 PM   #5 (permalink)
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the runners are around 1/4 in taller. On the stock TPI intakes they would stop rite were the intake did so I would build it up 1/2 in so that I could port out the 1/4 in needed to match the runners and have 1/4 in for the seal around it.

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Old 02-10-2008, 12:50 PM   #6 (permalink)
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TPI is the same concept of intake but i was talking about using a dual carb. tunnel ram. Would this still make a difference on the runner length? Where would you get the adapter from?
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Old 02-12-2008, 07:18 AM   #7 (permalink)
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yes the vortecs will still be to tall you will have the same trouble.
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Old 02-12-2008, 02:09 PM   #8 (permalink)
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TPI is the same concept of intake but i was talking about using a dual carb. tunnel ram. Would this still make a difference on the runner length? Where would you get the adapter from?
TPI and tunnel ram are nowhere near the same concept. I think the runners on a tpi are like 13 - 15" (just a guess) BUT they dont carry any fuel just air. Thats were the big difference is.

In a tunnel ram it requires lots of velocity (High RPM )to keep the fuel vaporized.

If your planning on making torque like a TPI with a tunnel ram, It's not going to happen. If you like to spin 3000 - 8000 rpm give it a shot.

In a nutshell, dont waste your time.
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Old 02-13-2008, 11:19 AM   #9 (permalink)
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how much would it cost me for the machine work on the intake.
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Old 02-13-2008, 11:25 AM   #10 (permalink)
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dont forget that the distributor work work either. unless you use a distributor with an adjustable collar
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Old 02-13-2008, 12:49 PM   #11 (permalink)
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the vortec runners are taller in an effort to keep air flow speed up as the mix transitions from vertical to horizontal.

the bolt pattern is also different.

dont waste your time.
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Old 02-13-2008, 04:08 PM   #12 (permalink)
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the center 2 bolt holes are at a diffrent angle do big deal thats what drills are for just redrill them to make up for the bolts not sitting flush make a spacer and cut it at an anle so the bolt will sit flat on it. You should be able to get it done for $25 its the porting and welding that will cost you but if you can do it youe self no big deal. if you have to pay some one to do all of it your going to be in the 200 range.

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Old 02-13-2008, 04:12 PM   #13 (permalink)
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one last thing felpro makes a thick gasket for the vortec intake dont remeber the part number but that is the one you should use.
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Old 02-13-2008, 06:13 PM   #14 (permalink)
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Quote:
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the center 2 bolt holes are at a diffrent angle do big deal thats what drills are for just redrill them to make up for the bolts not sitting flush make a spacer and cut it at an anle so the bolt will sit flat on it. You should be able to get it done for $25 its the porting and welding that will cost you but if you can do it youe self no big deal. if you have to pay some one to do all of it your going to be in the 200 range.
angled washers can be bought through mcmaster carr that will work as well.
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