Going by my experiences at the track, dyno, and watching the fuel economy
with the modified TB's - they work. Too many people have noticed the same
thing as well to say that they don't work.
The 4.7L HO WJ that one of our sales people has (with Fastman TB)...well,
again - the "doesn't work" theory is out. It made an almost 2mpg gain and
the performance off the line and crusing is noticeably better than with the
stock TB.
The spacers - yup, make a nice whisteling noise but do nothing else.
- Bernd
-----Original Message-----
From: Ray Block [mailto:bpracing@worldnet.att.net]
Sent: Tuesday, August 21, 2007 5:16 PM
To: dakota-truck@dakota-truck.net
Subject: DML: RE: RE: 4.7L V8 TB Spacer
> -----Original Message-----
> From: Bernd D. Ratsch
>
> I've heard both good and bad on them - I do know that they don't work on
> the
> Hemi's. ;)
>
> Personally, i'd save the $80 on the spacer and put it towards a good
> modified throttle body.
>
> - Bernd
Personally, having extensively drag strip (and street) tested a stock 68 mm
throttle body vs. a Fastman ported 68 mm on my 4.7L GC, I'd say save your
money again. On an internally stock motor a larger throttle body doesn't
make any difference. FWIW, I stand by that statement on the 5.2L magnums
as well.
Ray
2000 Grand Cherokee 4.7 - 15.40 @ 85.70
http://www.dragtruk.com/ENTRIES/20KM1FD2KWBP.html
This archive was generated by hypermail 2b29 : Sat Sep 01 2007 - 00:05:36 EDT