Looking for ported stock heads, intake and stock cam dynos

I don't hink there too low, but I have seen more. The qaulity of the porting makes a difference.

90Notch said:

As does the amount of porting, a valve job and some tuning. Next dyno is going to be a swap to Street Heat intake, then tune with EEC to see what both can do.

Click to expand...

May work out well for you. Here's some feedback I just got where it did not, but the combo is different from yours - yours is more intake side restricted.....

From:"Robert Pearson" <rpearson@pinehurst.net>
To:"Thomas Moss" <mosstpsa@sbcglobal.net>
Subject:Re: hey this is the dyno graph for the explorer
Date:Sat, 6 Nov 2004 22:18:06 -0500

hey man i gotta get u the dyno graph of the rpm 2 compared to the explorer
with your lower ported, all i can say is your intake kills the rpm 2 i
lost 24 ftlbs of torque and 7 hp and under the curve the performer rpm2
could not compete on horsepoaer or tq the intake is coming off u will see
more when i get the graphs on the same chart, oh and the explorer is going
back on u should have good info to post and this was with nothing else
changed ill definetly recommend your porting to people thanks

Robert
----- Original Message -----
From: Thomas Moss
To: Robert Pearson
Sent: Wednesday, October 20, 2004 10:50 PM
Subject: Re: hey this is the dyno graph for the explorer

Much appreciated - looking forward to the RPM graph.

Robert Pearson <rpearson@pinehurst.net> wrote: well i dont have and
website or anything i dont know how to do all that stuff, lol here are
my mods

afr 165 emissions legal heads
1.6 roller rockers
explorer intake with your ported lower 70 mm tb
75 pro m maf calibrated for 19 pound injectors
sct chip with the calibraion for the 24 pound injectors
under drive pullys timing set at 14 degrees
p headers, with bassani off road x pipe flowmaster cat back
aod trans with wide ratio kit, shift kit 3200 pi converter soon to be
rasied someday
msd ignition
3.73 gears
electric fan kit

well i think thats everything i should have the intake on next weekend
the 30th best times so far are 12.77 @ 109.70 if u needed those
thanks man

Robert

90Notch said:

Stock heads ported (stock vlv no vlv job)
stock intake (upper opening opened to match EGR / lower ported to stock gaskets & head)
stock cam dot to dot
stock MAF
65mm TB & 67EGR
stock rotating assembly (cleaned, home hone & re ring)
19lb inj
1 5/8" FMS shorties
2 1/2" OR H
2 1/2" Summit cat back
3.73

#'s are pretty much what I expected, what do you think they should have been?

Click to expand...

I think with the stock MAM and shortie headers you are doing rather well.

Just the first dyno with the Explorer intake which I have attached with his combo. By the way, this is with an AOD transmission, so FW numbers are a little higher than a 5 speed. He is going to send me the RPM2 dyno also.

with a heavily ported stock intake (upper & Lower) can you get 10-15rwhp?


how do you port a throttlebody?

90Notch said:

The first dyno w/Cobra had an a/f of 12.8:1 right across entire range (which seems to be where most poeple make max power with these heads) then when he switched to the RPM the lower rpms are richer until 3k or 3.5k where a/f hits 12.8:1 again and stays there.

Click to expand...

Maybe the volume of air being deliverd into the cylinder is less than the Cobra in that rpm band and hence a richer mixture.