I have a 71 Impala with a 402 BB and oval port heads. First, was the SS454 pick up oval port or square port? Second can you use a square port intake with oval port heads. Is there a BB intake I could use to convert my Impala to FI on the cheap, using truck TB parts, computer etc?
Any sources for SS454 TB, computer, wiring harness parts? The junk yards seem to be short on these items around me

------------------
Rob P
89RSconvtZZ4TPI Edelbrock Intake
SLP Dual Cold Air Intake 1 5/8" Headers Semi-Siamesed Runners, IROC
suspension, alum shaft. Numerous mods.
92Z28convt5spd (stock)
71Impala convt 402BB
BETTER DRIVING THRU SUPERIOR HORSEPOWER!

 

http://car-part.com/
just look for a 454 TBI, I think the only special thing about the 454SS was that it was a 1500 pickup and not the 2500+ that normally can get the 454.

------------------
-Tas
'89 Formula WS-6

305, TBI, 700R4, P.A.W. 14x3 open element with K&N, Milodon 160* thermo, functional Formula hood, cross-flow Flowmaster, '99z28 rear pipes and tips, Hooker 1-5/8" 50 state legal headers, Dynomax 3" I pipe (PN 44063 and 43248)
Super GRK_Taz World
F-Body Dual Exaust
EFI & Intake Options
AOL IM: superGRtaz



Got Beach?

 

Thanks Tas. A future project, make the 71 Impala run and perform like a new car. Now if I could find a wrecked 96 Impala SS, pull the body off the frame and drop my 71 body on top, that would be something! A 30 year old classic with all the ammenities!

------------------
Rob P
89RSconvtZZ4TPI Edelbrock Intake
SLP Dual Cold Air Intake 1 5/8" Headers Semi-Siamesed Runners, IROC
suspension, alum shaft. Numerous mods.
92Z28convt5spd (stock)
71Impala convt 402BB
BETTER DRIVING THRU SUPERIOR HORSEPOWER!

 

The big block in the 454SS was definitely oval port. I don't GM has used rectangle port heads/intakes in production since 1970. As for mixing and matching, the oval port intake will work on a rectangle port, but rectangle port intake has a huge mismatch the wrong way(by airflow) mounted to oval port heads, I wouldn't recommend that. The EFI set-up should be similar to a small block, a 4 or 2 barrel manifold would work with a TBI adapter, although the 454 TBI has 2" throttle blades, some honing on the adapter might be needed. Other than that(and of course, tuning) everything else go together fine. Hope that helps.

 

Look for an intake and TBs from the larger 1987-89 trucks 7.4 V8 TBI 'N' L19. They should work also plus they use the 7747 ecm.

------------------
Dan