Crawford manifold or MREV for the REVUP motor
Originally Posted by jcarp
its a new rev up motor with the shorter runners of the 287 worked over.
Originally Posted by 97supratt
Okay folks, I have a dilemma. I'm in the market now for a manifold my 06 REVUP motor and i'm not sure which route to go. I have seen all the awesome dynos on the MREV, but i've also seen great dynos on the Crawford. Does anyone have any experience with both? Please shine some light on this subject. The crawford manifold is a lot less than the MREV as well. I've searched and saw some dynos but nobody has really experienced both. Thanks
Arin
Arin
Why not try both on the dyno/street to see which will work best for you?
I have a cast plenum and MREV+ you can evaluate (no charge) for comparative testing if you like.
Tony
Originally Posted by jcarp
Did Doug Port The Runners And Port Match The Gasket Do U Know?
Originally Posted by thawk408
I think the only difference is their 287hp lower plenum has the front runners cut down a bit. If it helps I can't see it helping a lot.
Originally Posted by godmans
Did u just put the 287 plenum or the MREV+ ? I don't think if you can really compare a 287 plenum on a 298 motor with the one ported by MD..
MREV all the way. I love my Crawford plenum on my 287hp motor, but that Crawford dyno posted should seal the deal for anybody with 1/2 a brain. The MREV have been independently tested at 15whp 20ft/lbs midrange, a few peak up top. An MREV equipped Revup vs a Crawford car the MREV would win hands down. I have installed 2 MREV's for local guys in the past 2 weeks the midrange is incredible, and the spacer keeps the top end lost by going to the smaller volumed lower plenum-also very easy to install about 1 hour. Remember guys-its the area under the peak that counts the most
But what do I know, my Z is slow...
But what do I know, my Z is slow...
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Originally Posted by Hydrazine
Hi Arin,
Why not try both on the dyno/street to see which will work best for you?
I have a cast plenum and MREV+ you can evaluate (no charge) for comparative testing if you like.
Tony
Why not try both on the dyno/street to see which will work best for you?
I have a cast plenum and MREV+ you can evaluate (no charge) for comparative testing if you like.
Tony
Originally Posted by cnynracer1
Thank you for posting this dyno chart.
I would probably go with the crawford plenum after looking at your chart. Although the MREV does gain alot of power in mid-range, it looks like you hit a wall once it gets in to the high RPM powerband. I like the fact the Crawford plenum lost nothing down low, and only gained up top.
There has to be a middle-ground somewhere between these two.
I would probably go with the crawford plenum after looking at your chart. Although the MREV does gain alot of power in mid-range, it looks like you hit a wall once it gets in to the high RPM powerband. I like the fact the Crawford plenum lost nothing down low, and only gained up top.
There has to be a middle-ground somewhere between these two.
Originally Posted by 97supratt
What rpm do you guys shift your REVUP's at? All these dyno's I look at everyones shuttin down around 6500rpm. I drive this bad boy to 7200 before shifting and its working well.
I still shift at 7200. See my video...
http://www.sah2o.com/russ/videos/
2nd one is the better one. You really don't lose that much power up high at all. I had Stillen CAI, and MREV not the Plus yet, and 19" wheels with a full tank of gas when I did this.
Originally Posted by thawk408
I have a dyno for that one too. 
http://community.webshots.com/photo/...64805389GiVRUT
Green = Crawford headers, highflow cats, plenum, JWT intake, and borla exhaust
Red = Same as Green but swapped stock 300hp lower plenum for the 287hp lower plenum(so basiclly MREV with plenum instead of spacer)
Blue = Same as Red, but added Crawford Throttle body
http://community.webshots.com/photo/...64805389GiVRUT
Green = Crawford headers, highflow cats, plenum, JWT intake, and borla exhaust
Red = Same as Green but swapped stock 300hp lower plenum for the 287hp lower plenum(so basiclly MREV with plenum instead of spacer)
Blue = Same as Red, but added Crawford Throttle body
From your chart, having the Crawford Plenum hurt your #'s w/ the MREV. Have you tried taking it off and use the MREV Spacer to see what #'s you'd produce?
I still don't understand what's the difference between the Mrev & Mrev+.
I know it can seem biased coming from the manufaturer
but the strut bar spacers don't affect handling. The strut bar spacers are purpose built for the application. Solid 6061 T6511 Kaiser aluminum.
Once they are bolted down its completely ridgid.
but the strut bar spacers don't affect handling. The strut bar spacers are purpose built for the application. Solid 6061 T6511 Kaiser aluminum. Once they are bolted down its completely ridgid.