C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

accel manifold?

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Old Jul 21, 2006 | 01:22 PM
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Default accel manifold?

hey, i was hoping to get some input. i saw in mid america they have something called the Accel super ram manifold, does anyone have any stats on what this really does?

i know edelbrock sells some similar stuff, and obviously i trust that name a bit more. anyone know anything about theirs?

what sort of gains do they give, anyone have any before and after #s? what, if any, additional work is needed to see results?

thanks!
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Old Jul 21, 2006 | 02:27 PM
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The super ram is the shiznit.

It's pricey, and if you check around, it can be had used for about $1000. Used, in my opinion, is the way to go... that means someone has bugged out the vacuum leaks.

It's worth quite a bit of top end power and added RPMs.

Someone will chime in with stats... but it is a good piece.
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Old Jul 21, 2006 | 02:27 PM
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Do a Search on Super Ram. You will find more info on this subject than you will ever have a chance to read.
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Old Jul 21, 2006 | 02:28 PM
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Originally Posted by bogus
The super ram is the shiznit.

It's pricey, and if you check around, it can be had used for about $1000. Used, in my opinion, is the way to go... that means someone has bugged out the vacuum leaks.
Just sold one of mine yesterday to a guy in CA in that price range.
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Old Jul 21, 2006 | 02:41 PM
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A better base should be worth about 20hp or thereabouts.

All of the aftermarket bases flow reasonably the same, so just find whatever comes up cheapest. Its best to just watch Ebay.

Edelbrock makes the TPiS base, TPiS just ports it a bit. Accel is just as good as TPiS.

To really see the results come in, you have to go with the full Superram (plenum/runners) or larger runners and a ported plenum. All made by Accel as well. TPiS sells a modified set of AS&M runners, Edelbrock sells a set, SLP sells a set. You may want to look at my website and run searches in the archives of Tech.
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Old Jul 22, 2006 | 04:31 PM
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Vader: whats your site?

bogus: its costs more used than new?
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Old Jul 22, 2006 | 05:30 PM
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Default SR vs stock

I thought you might want to see what the SuperRam Plenum looks like compared to the stock 1985 plenum.


The Base intake manifold on the Accel has larger runners to assist flow. The tubes for the SR are also a larger diameter and shorter for a more direct flow.

This is an item that isn't much fun to install, but well worth the effort.

As for cost, Jeg's sells the intake base for $517.99 and the runners and plenum for $779.99. So for the total package you are looking at $1297.98. You can run the base with your stock top end.

Mid America sell the BASE only, not the Accel runners and plenum.

Last edited by John A. Marker; Jul 22, 2006 at 05:39 PM.
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Old Jul 22, 2006 | 06:36 PM
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Originally Posted by deadSpace
Vader: whats your site?

bogus: its costs more used than new?
Click on my name at the left.

Its cheaper used. Its going to be expensive no matter where you get it, but if you watch ebay you could get a good deal, though I usually see a full SR system going for $1000 minimum even there.
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Old Jul 22, 2006 | 07:59 PM
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I agree, go used. There's no reason to buy a new setup, unless you're pressed for time and a used one isn't available.

I purchased a new SR plenum + runners off ebay for $600, and a used mildly ported SR manifold from another CF member for $250. This wasn't done all at once; it was over an 8 month timeframe.
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Old Jul 22, 2006 | 09:35 PM
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Even if you wanted to buy a new SR, I doubt that you can find one from a dealer. Accel is totally out of them and the earliest that they will be available from Accel is 6 months Apparently they are having vendor issues again.
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Old Jul 22, 2006 | 09:36 PM
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Originally Posted by AKS Racing
Just sold one of mine yesterday to a guy in CA in that price range.
Was his name Pete?
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Old Jul 22, 2006 | 10:09 PM
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They are all pretty good! I put the TPIS base on mine and some Large Tube runner's and Holy! Cow! what a huge difference from the stock set-up! Absoloutly sweet. Do as Vader suggested and keep an eye out for the manifolds and runners in the for sale section here and on Ebay! Happy hunting you will not regret buying and installing the unit on your Vette!

Thanks,Matt
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Old Jul 22, 2006 | 11:39 PM
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i have the edlebrock hi-flo intake and runners. will i need ecm retuned if i install it? What cam works good with this system on a speed density veh?
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Old Jul 23, 2006 | 11:26 AM
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Originally Posted by JustForFun
i have the edlebrock hi-flo intake and runners. will i need ecm retuned if i install it? What cam works good with this system on a speed density veh?

I too have the speed density unit on my Vette. I have a ported TPIS Base and the ASM lg tube runner's. I'm using the stock cam w/1.6 roller rocker's and w/that combo it gave a huge kick in the ***! Totally could feel the power change w/each change or upgrade! but you could go with another cam but you WILL need to do a custom tune on a chip for your computer!

Thanks,Matt
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Old Jul 23, 2006 | 01:23 PM
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Originally Posted by JustForFun
i have the edlebrock hi-flo intake and runners. will i need ecm retuned if i install it? What cam works good with this system on a speed density veh?

SD doesnt adjust quite as well, but I would wait until after install and see if it has problems.

Cam choice wont be dependent on whether its SD or MAF. If its TPI then it should be something like Accel 211 or TPiS ZZ9. And once you change the cam a computer chip will be necessary.
You may want to wait and install it all at once.
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Old Jul 23, 2006 | 11:03 PM
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Originally Posted by vader86
SD doesnt adjust quite as well, but I would wait until after install and see if it has problems.

Cam choice wont be dependent on whether its SD or MAF. If its TPI then it should be something like Accel 211 or TPiS ZZ9. And once you change the cam a computer chip will be necessary.
You may want to wait and install it all at once.

How radical/tame or those cams? Im wanting something with little more kick, but nothing to where i cant drive it on a 250-300 mile trip if ide like.

Also...is this a roller cam? Im running the GM Goodwrench 260hp crate engine. Will it work where the engine has hyd cam?

Last edited by JustForFun; Jul 23, 2006 at 11:10 PM.
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Old Jul 23, 2006 | 11:15 PM
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These cams are hydraulic rollers and pass emissions and will do just fine on long trips. Quite tame. If you have hyd. flat tappet you can find several with similar specs to these from the major manufacturers. Accel 212 is a flat tappet made for this.
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Old Jul 23, 2006 | 11:27 PM
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thanks for the suggestions. Im trying to find someone who sells those cams. Should i expect a big kick with new cam and eldebrock hi-flo intake?

Also plan on going to a 355 gear since im runnning a 2.73 now

the cam in the crate engine doesnt seem well suited for the TPI system
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Old Jul 23, 2006 | 11:40 PM
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also...something ive noticed. The runners with my edelbrock manifold arent twin.siameased. they are basically like the stock GM ones, but seem larger. Could this be correct?
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