renegade intake? for cross fires

[Gibbles]

To answer your question; No I did not bore my throttle bodies out, however I did do the bushings.

At the time I was having some idling issues, but it did not cure it at all.
The issue turns out was with my tune.

I also confirmed recently that I'm running out of "VE" fueling @ 4,000RPM with near WOT.


I also did a little "Race" with a brand new VW Turbo Golf with an earlier tune.
At the time I had the wrong SA latency tables, and I was still running the 85 SA main tables.

I could not close the gap, however the gap was not increasing until It hit about 70mph, from there the gap started to close pretty quick, but by that time I had to back off for safety reasons...
when I got home I looked up the car, they have two versions. One is rated with a 0-60 @ 4.5sec, the other has a 0-60 of 4sec...

I'm calling that a pretty good improvement...


So to help deal with the fueling issues, I have the vacuum reference fuel pressure regulator installed...
Last weekend I made some block off plates for the factory FPR out of some aluminum stock.

Engine is a bit dirty... Here is the first install picture, I also parallel plumed the throttle bodies...

 

[Grumpy]

yes, its a fact that ,
your not the first and sure won,t be the last,
the average guy rarely even thinks about the fuel system configuration,
or the fuel pump capacity ,fuel filter capacity, ignition curve, valve train configuration, exhaust restriction,
or the injector size limitations until he start having issues or finds the engine seems to loose power after he hits second gear etc.

if youve ever wondered why Ive suggested no one use the cheap glass fuel filters, its because they are prone to leak, with less than safe results.

RELATED INFO

carefully reading through
these links and sub links will help
ITS GOING to be well worth the time and effort
http://garage.grumpysperformance.com/index.php?threads/renegade-intake-for-cross-fires.2796/

http://garage.grumpysperformance.com/index.php?threads/1984-fuel-pressure.11776/#post-55675

http://garage.grumpysperformance.com/index.php?threads/got-a-cross-fire-corvette.640/#post-50502

http://garage.grumpysperformance.co...lf-the-time-starts-and-dies.11187/#post-50245

http://garage.grumpysperformance.com/index.php?threads/1984-crossfire-vette-won-t-run-right.10096/

http://garage.grumpysperformance.com/index.php?threads/tweaking-a-350-383.13087/#post-68195

http://garage.grumpysperformance.com/index.php?threads/is-backpressure-hurting-your-combo.495/

http://garage.grumpysperformance.com/index.php?threads/what-to-look-for-in-a-good-engine-combo.9930/

http://garage.grumpysperformance.com/index.php?threads/383-information-overload.11137/

http://garage.grumpysperformance.co...e-springs-and-setting-up-the-valve-train.181/

http://garage.grumpysperformance.com/index.php?threads/matching-parts-and-a-logical-plan.7722/

http://garage.grumpysperformance.com/index.php?threads/valve-train-clearances-and-problems.528/

http://garage.grumpysperformance.com/index.php?threads/setting-up-your-fuel-system.211/

http://garage.grumpysperformance.com/index.php?threads/fuel-pressure-regulators.635/

http://garage.grumpysperformance.com/index.php?threads/calculate-fuel-injector-size.1200/

 

[Grumpy]

https://www.corvettemods.com/C3-C4-...ke-Manifold--Crossfire-Injection_p_14318.html

http://garage.grumpysperformance.com/index.php?threads/ported-crossfire-383.10240/#post-41065

http://garage.grumpysperformance.com/index.php?threads/got-a-cross-fire-corvette.640/#post-25767

if your thinking of buying a renegade intake upgrade here is a damn impressive limited time sale

 

[Grumpy]

if you have a 1982-1984 c4 corvette
the swap to a RENEGADE intake for the O.E.M intake, simply because it flows significantly more air,
just the intake alone is easily worth about 20 hp, but if its matched to the correct cam and heads,
its going to be a noticeable improvement, over the results, you would potentially see with the O.E.M intake.
the originally use #624 heads are very restrictive, the original cams are no where close to ideal.
youll never get the full power potential from the RENEGADE untill you upgrade the cylinder heads and cam you use with that intake,
a commonly used and well documented combo (but certainly not your only options)
is the crane 114142

the OEM crossfire heads for 1984 are casting number 462624 76cc heads
462624 chevy head flow numbers
(these are the heads that came on the 1984 corvettes)
just a bit of info on those stock #624 head flow rates

.......intake....exhaust
.100..44..........41cfm
.200..101..........82cfm
.300.155..........125cfm
.400..182..........137cfm
.500..196..........140cfm

(THATS PATHETIC)

read this
https://www.hotrod.com/articles/ccrp-1209-eight-budget-sbc-head-shootout/

The 624 is a light weight version of the 882 head.,. The 624 is one of the worst that GM produced and not intended for high performance use.

every time I hear that MYTH,
( that starts out with, BUT THE 1984 MAKES GOBS OF TORQUE) I want to point out a few facts

http://www.stingray.nu/tips/tech84.htm

right from Chevy (1984 vette)
Net HP @ RPM 205 @ 5200
Net Torque @ RPM 290 @ 2800
Comp. Ratio 9.0:1

http://purplesagetradingpost.com/sumner/techinfo/heads1.html

http://garage.grumpysperformance.com/index.php?threads/got-a-cross-fire-corvette.640/#post-50502