Slow5.0
Active Member
I ported my intake before i installed two years ago, so i couldn't say there is improvement because i never run this intake stock
Advice wanted What next
- Thread starter Pops Fun
- Start date
zenboy99
Founding Member
Have Total Engine Airflow or Fox Lake take care of those Twisted Wedge heads for you. They can make them flow well over 300cfm. Then maybe the Edelbrock Vic EFI intake and a custom cam.
The cobra intake is not a "huge" restriction. Tmoss has posted dyno result from a 347 running a ported lower cobra against a Holley intake and the cobra was right there up until 6500 rpm I believe. That was the only changes that were made (intake swap comparison) pm tmoss for the sheet. So Pops Fun I agree with your son, BTW that 347 was N/A.
zenboy99 said:
Thats my dream set up down the road. Ported TW's, victor 5.0 manifold, 90mm tb, a REAL collector on my bbk longtubes, a 3" mid pipe and shift at 7,000 with 4.30 gears 
Pops, if you're staying n/a like I said a while ago, that cobra intake and camshaft are HUGE restrictions if you're looking to make power. The only way that cobra intake would be worth putting money into is if you decide to get a KB blower. Have you come up with any kind of decision yet? The KB blower might be your best bet unless you're willing to shift it higher with better parts n/a and gear it correctly. As it is, the combo is dead after 5,500, if you put the proper parts on it for n/a power and took it to around 6,500, you'd see nice gains.
wytstang said:
Actually the Cobra intake was STOCK! I WISH I could have worked that lower before the test!!!!!!!!
Slow5.0
Active Member
tmoss said:
Can you tell me which one is GT-40 or whats peek HP and TQ on GT-40 on that dyno sheet
Thanks
Slow5.0 said:
Look at the left hand side of the graph - the GT40 torque line is the one on top and the Holley is the one under that.
ON the right hand side of the graph - the Holley is the HP line on top and the GT40 is the one under that.
Your intake would perform better than this one Ernan because you ported your intake and did a pretty good job of it.
wytstang said:
It just occured to me that you be referring to the dyno test of one of my Explorer intakes that got replaced by an RPMII - which I bested..........but it went to 6,000 rpm.
zenboy99
Founding Member
wytstang said:Impressive a "stock" cobra could hang with the holley, thanks for posting the dyno proof
To me it doesn't seem like the Cobra's hanging with the Holley after 5500.
zenboy99 said:
Yep, that's correct - but it's beter below that and after the right massaging of the lower intake, It'll stay better beyod that - to 6,000 rpm or more. It's about the area under the curve, not peaks!
Grn92LX said:Why did he put an rpm II manifold with an E cam?
Because internet gurus told him it would be a better intake........
Slow5.0
Active Member
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