SB Chevy retrofit, Accel vs. Edelbrock?

Kenton Cabiness cabiness at lucent.com
Mon Dec 23 15:57:50 GMT 1996


I'm new here. I checked the archives, but didn't find much on this.

I'm currently working on building a new motor for my autocross car.  I
want to convert to to EFI to increased throttle response (and build as
much HP as possible :-).

The engine is a '70 LT1 long block (ie. 11:1 compression, solid lifter cam
(don't have the specs here with me now, but known for low vacume), going into
a '74 Vette body (3600 lbs).

The easiest routes seem to be either the Edelbrock Pro-Flo or Accel Super-Ram
kits.  I know someone with the Edelbrock system on the same car/engine setup
and is very happy with it.

Has anyone had any experience with these systems that they would like to share?
(Ideally with both, yea I know it's a lot to ask).  Like how hard are they to
tune?  Is a dyno needed to get them set up?  Has anyone seen/done a head-to-head
comparison of these (or other) systems?

Here's my current thinking, make comments as you like (be kind please :-)

The Edelbrock is cheapest, and according to my friend, works quite well.  No
graphical interface, no data recording.

The Accel claims most torque (I haven't seen any data to confirm this).  I
believe that with the interface SW you can do data recording which with a
g-analyst could become a poor-man's dyno to ease tuning.

The big question, is the Accel (possibly more torque, graphical interface)
worth the extra $1000 + laptop?  Or should I just go with the Edelbrock and
put the $1000 toward dyno time?  Anyone know of a shop with a chassis dyno
in the Chicago area?

Any other options that I'm missing (time to develop is a concern)?

Thanks for any help.

Kenton Cabiness
krc at ihgp.ih.lucent.com




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