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#1
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RA4 repop intake
Any first hand experience with these intakes... ,good, bad, POS?
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LIFT HEAVY, LIFE IS TOO SHORT TO BE SMALL! |
#2
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Depends on the individual intake. First one I got was terrible-sent it back. Next one a little better still some core shift. Had to do some welding on the top of the ports on one side too.
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Skip Fix 1978 Trans Am original owner 10.99 @ 124 pump gas 455 E heads, NO Bird ever! 1981 Black SE Trans Am stockish 6X 400ci, turbo 301 on a stand 1965 GTO 4 barrel 3 speed project 2004 GTO Pulse Red stock motor computer tune 13.43@103.4 1964 Impala SS 409/470ci 600 HP stroker project 1979 Camaro IAII Edelbrock head 500" 695 HP 10.33@132 3595lbs |
The Following User Says Thank You to Skip Fix For This Useful Post: | ||
#3
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Wow! Glad I asked! A little gasket matching is always expected, but not welding. I’ll keep looking for a stock cast iron.
Thanks!
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LIFT HEAVY, LIFE IS TOO SHORT TO BE SMALL! |
#4
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The Franks Pontiac parts site is showing 4 cast iron intakes in stock and for sale as I post this.
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I do stuff for reasons. |
#5
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I've been messing with one for my RAII build. My experience is not nearly as bad as everyone led me to believe it was going to be so maybe they revised the casting or got better at it. I bought this one about a year ago from The Parts Place. It was listed for a '69.
Out of the box port/gasket match: https://forums.maxperformanceinc.com...take&page=2#24 Porting: https://forums.maxperformanceinc.com...42&page=10#199
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Ken '68 GTO - 464 - Ram Air II heads - 236/242 roller - 9.5” TSP converter - Moser 3.55 Truetrac (build thread | walk around) '95 Comp T/A #6 M6 - bone stock (pics) |
#6
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I've had two reproductions come through a couple years apart. Massive shift to the point that I could see a slit of open head port when the manifold was positioned. So I wouldn't call it core shift when the actual casting is off that far. Owner said fix it so he could run it and after welding and doing what I could it was still only about 85% aligned. Even on the photos on the first link listed above the port would be through to the outside so porting will have to be brought back from the edge. The two I had were worse.
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Mick Batson 1967 original owner Tyro Blue/black top 4-speed HO GTO with all the original parts stored safely away -- 1965 2+2 survivor AC auto -- 1965 Catalina Safari Wagon. |
#7
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So they are basically a lottery? Either you get an OK one or a pile of crap one? That's too bad, could have been a nice option over a stock intake.
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1968 - Pontiac GTO |
#8
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Very few repops are as good as the original factory part. Problem is original RAIV intakes are selling for a lot now. You see them on eBay but like everything, they are expensive!!!
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#9
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Quote:
At any rate, seems like what I have is better than what you worked with. Curious if it's a crap shoot or they made some improvements.
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Ken '68 GTO - 464 - Ram Air II heads - 236/242 roller - 9.5” TSP converter - Moser 3.55 Truetrac (build thread | walk around) '95 Comp T/A #6 M6 - bone stock (pics) |
#10
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All that effort to produce something, at least do it right!!
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LIFT HEAVY, LIFE IS TOO SHORT TO BE SMALL! |
The Following User Says Thank You to BILL BOWMAN1 For This Useful Post: | ||
#11
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If f your budget is under the gun and your not looking to make over 415 hp then for now pick up a used Performer.
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I do stuff for reasons. |
#12
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I bought mine about 5-6 years ago and like mentioned it wasn't near as bad as some post.
In fact I never touched the ports, bolted it on and ran it. Found on my combination the car has run identical times at the track compared to the stock iron piece I had been racing for 25 years. I daily drive the car and like how it acts over the iron intake in the az heat. It's been a good piece for me. If you do a search you'll find this is an old subject. In fact there are many examples where the iron intakes even have poor port alignment. Steve has posted his factory 70 iron raIII intake a few times over the years. Mine honestly didn't look much better than his. There is always going to be core shift with anything like this. That's just the nature of it. For what it's worth the mold to repop these intakes was made from an original piece if that tells you anything. Last edited by Formulajones; 10-04-2022 at 07:22 AM. |
#13
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Core shift is terrible , port divider into other port , not a worthy intake @ all .
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#14
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Pics??
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#15
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Thanks for all the info. I might have found a cast iron one locally which is what I really want .
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LIFT HEAVY, LIFE IS TOO SHORT TO BE SMALL! |
#16
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Down side on a cast iron one 40lbs vs 22lbs!
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Skip Fix 1978 Trans Am original owner 10.99 @ 124 pump gas 455 E heads, NO Bird ever! 1981 Black SE Trans Am stockish 6X 400ci, turbo 301 on a stand 1965 GTO 4 barrel 3 speed project 2004 GTO Pulse Red stock motor computer tune 13.43@103.4 1964 Impala SS 409/470ci 600 HP stroker project 1979 Camaro IAII Edelbrock head 500" 695 HP 10.33@132 3595lbs |
#17
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I also really prefer the separate heat cross over deal.
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The Following User Says Thank You to Formulajones For This Useful Post: | ||
#18
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factory intake
I bought a beautiful factory iron intake from Franks some years ago.
it's a 9794234 and came with waterneck and factory choke stove for carb still attached. Did minor gasket cleanup and can say its far better then the SP2P it replaced. Now that I am running the factory SR carb that choke stove came in very handy!!! you can't beat factory parts I now see factory choke stoves selling for more then i paid for whole setup. Gerry
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1968 Firebird 400, 068 cam, TH400 & 13" Continental Converter, Auburn posi with 3:08 factory gears, Cliff's Q-jet resting on a 68 factory iron intake, DUI HEI and Ram Air pans and RARE Long Branch Manifolds |
#19
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I was trying to run one of these manifolds that is not a reproduction on ported aluminum heads after finding out the my factory intake won’t work on the the ported heads. Hopefully it fits I have taken the car apart yet !
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#20
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Typically it's when the head intake ports are raised to a point the intake won't fit well. Welding the intake in that situation is the solution. Not uncommon to see that with some OEM intakes.
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