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| intake manifold https://slantsix.org/forum/viewtopic.php?t=59819 |
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| Author: | twister6 [ Sun Jun 26, 2016 1:14 pm ] |
| Post subject: | intake manifold |
I am building a 225, and looking at the different intakes that are availiable out there..I have a clifford 4 bbl intake, and looking at the Hurricane, and was wondering if they out perform the clifford? Is it worth the bang for the buck. Im putting the 280/270 cam with the head shaved 100ths. the head was ported and polished 340 valves installed (188's) with the 390 holley, stock bottom. I have the clifford shorties I will be using as headers. So the question is should I waste my money on a hurricane? |
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| Author: | slantzilla [ Sun Jun 26, 2016 2:29 pm ] |
| Post subject: | |
No. |
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| Author: | DusterIdiot [ Sun Jun 26, 2016 3:33 pm ] |
| Post subject: | x2 |
Quote: So the question is should I waste my money on a hurricane?
No.Unless you are going for the look, the adventure of tuning it, or need the length to tune the build for a certain power band, the hurricane will not out perform or out breathe a clifford shorty (the only long ram manifold that would come close would be a Dutra Fat Pak, which is a very rare item). |
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| Author: | Joshie225 [ Sun Jun 26, 2016 4:39 pm ] |
| Post subject: | |
Do those intake valves clear the cylinder bores? |
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| Author: | slantzilla [ Sun Jun 26, 2016 4:48 pm ] |
| Post subject: | |
IIRC, they do Josh, but I have to believe they are shrouded by the wall very badly. |
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| Author: | ceej [ Sun Jun 26, 2016 6:47 pm ] |
| Post subject: | |
It's the exhaust valve that has problems with clearance. Up around 1.54" anything less than a 0.060" overbore may have clearance issues. Depending on the head cut, alignment and valve lift, you can tag the deck. I did it on a metric 0.045" overbore. Nothing like rebuilding a brand new head... CJ |
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| Author: | twister6 [ Sun Jun 26, 2016 6:48 pm ] |
| Post subject: | |
thanks for the input guys,,thats what i thought the answer would be, just wanted it verified. Yes the valves clear the bore, it was bored 30 over..Im doing a rebuild on it because the fuel pump diaphram leaked fuel in the engine, and washed the cylinder walls..car ran good with this combination, along with a 3000 stall converter. I ll just go back with the clifford intake. With this build combo I was thinking of jumping up to a 650 holley..do you think this is to big, or should I stay with the 390. ? |
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| Author: | slantzilla [ Sun Jun 26, 2016 7:40 pm ] |
| Post subject: | |
650 would work well if you tune it right, especially if you have a 3.91 or better in the rear. |
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| Author: | Dart270 [ Wed Jun 29, 2016 7:45 am ] |
| Post subject: | |
I think the 390 will perform better and be easier to tune than a 650 for that setup. The 650 could be made to work, but it will be a lot tougher and will not get you much if any gain. Lou |
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