Intake Manifold
 

I am looking to replace my existing air gap intake manifolds for next boating season. The manifolds are 4 seasons old and with the part saltly waters in my area I'm afraid that they will start leaking soon. I was looking on the internet and came across a BBC intake made by Speed Master. The price for this is almost 100.00 cheaper than Edelbrocks. Has anyone heard of this company? why so cheap.? Also if i switch to a single plane manifold (which they also have Polished for 169.00) will that help my performance or hurt it. Will I have to re-jet my carbs. My dyno sheets show 490 HP @ 5200 rpm. Nickerson 930 holleys.
Thanks

http://store.speedmaster79.com/p-277...old-satin.aspx

http://www.store.speedmaster79.com/p...-polished.aspx

http://www.store.speedmaster79.com/p...-polished.aspx

You get what you pay for. Well, except with Nickerson.

I've heard single plane manifolds are usually for high RPM applications, you could end up screwing up your complete tune

2 words

chinese knockoff.

will it work,maybe,probably never feel the difference in performance,,good or bad.

Never heard of them, so who the H E L L knows.

You could always check locally for a place that does Hard Anodizing for aluminum. That will give you a handful more years on a new intake. price will probably be under $200 per intake. Watch out, since it makes it electrically dead, your temp sensor probably won't work. Don't worry - you can run a small ground wire to it and hose clamp a male spade terminal to the temp sensor's body to ground it. Yup, obviously I've done this. LOL.

In case you didn't know, Edelbrock has been slowly releasing their MArine RPM line of intake manifolds.
The coolant (water) passages are lined. It's not cheap, but.....

Here's the BBC Oval Port Marine RPM intake:
http://www.summitracing.com/parts/edl-2561

http://static.summitracing.com/globa...2561_at_xl.jpg

wow. 519.00 and its not even an air gap..Maybe i'll try the polished dual plane speed master...for the price how bad could it be

http://www.ebay.com/itm/Chevy-BBC-45...f77564&vxp=mtr

I wouldn't buy it from ebay..

52 negative feedbacks in the last 6 month's from this seller,............... good luck

I have a pair of GM marine dual plane intakes with the brass passages from 1992 502 Mag motors. If you are interested I will post pics.

Thanks anyway I like the air gap design better