I thought the question was "how much power can I get"
and still have a daily driver type vehicle.
I feel that the TBI setup, although good does not make enough
power...at least for me anyway.
If you take the throttle body injector off the intake...you are
looking at what resembles an old two barrel style intake. Yea I know
fuel injection is far better but you still need air to match.
On Tue, 21 Sep 2004 21:09:48 -0500, email@example.com (Bill) wrote:
TBI motors didn't come with a true dual exhaust. it was a Y pipe into
a single cat then split back into 2 pipes at the muffler. headers are
definately worth it for these motors. the biggest improvement you'll
get is from new heads. the TBI heads suck big time.
Exhaust is not stock
Yea I'm aware that different heads certainly would help. But if one
wanted to retain the TBI setup you're limited in what you can do. As
far as I know.
1) install an eldebrock performer intake and run stock heads.
2) go with (the only aftermarket setup I know of) the GM "aftermarket"
TBI intake that matches the "fast burn" heads and also install the
fast burn heads. Other than that I'm not aware of a TBI intake that
you could run on the older style high performance heads. Different
bolt pattern on the heads and intake.
the stock TBI intake will bolt up to any '87 up performance heads.
buying a set of 'vette heads out of a scrapyard would be alot better
than the super crappy TBI heads. the only difference between the pre
and post '87 heads are two canted bolts in the center of the heads...
20 mins and a Dremel would take care of that.
another thing I should mentnion is that early 454 TBI motors used a
spreadbore intake with an adapter for the TBI on it. if you can get
ahold of one of these adapters, you can pretty much use any intake on
If I can ever spare the cash, I'm going to put the GMPP TBI for vortec
intake and a set of Vortec heads on my '88 350 TBI.
I've been tempted to do that....and I would if I were looking to
max the power. But I dont' think you can beat fuel injection for all
around "daily driver". Even though the TBI motors are kind of
wimpy, they do start at all temp ranges and will idle for hours
with no problem.
On Sat, 25 Sep 2004 18:30:02 -0500, firstname.lastname@example.org (Bill) wrote:
remove the ** to email
Motorsforum.com is a website by car enthusiasts for car enthusiasts. It is not affiliated with any of the car or spare part manufacturers or car dealers discussed here.
All logos and trade names are the property of their respective owners.