If you're going all out with you LT1 setup, the Intake Manifold
deserves some attention too. Much like our cylinder head
packages, this isn't something where a "one size fits all"
product is optimal. Because of this, we have several
different levels of intake porting - from mild to wild. If
you have a stock shortblock or a mild 383, all you really need
is basic inlet porting. However if your goals are above
450 rwhp naturally aspirated we would recommend moving up to our
Street/Strip manifold with ported runners. Just like our
heads, all LT1 intakes are fully washed, bead blasted, and
deburred so that they return looking better than new!
*Note: To perfectly blend the TB
opening to aftermarket TB bores we require either your TB, a
gasket / template, or you may scribe around the insides of the
bores yourself. Otherwise we will enlarge the opening to a
standard 59.5 - 60 mm dia. gasket that fits most 58 mm TB's.
Prior to shipping your manifold to us, please remove the
hardware attached to it. This includes the oil shield,
fueling, and TB hardware. Barb fittings for vacuum lines
may be left in.
Cleaning and Inlet Porting - This offering is
applicable to most engines with power goals below approximately
500 hp at the flywheel. After cleaning, the physical
modifications will be focused in the Throttle Body / Inlet areas
of the manifold to enable the use of 58 mm or mono-blade
Street/Strip Ported Intake - This is the same
manifold Rick Abare has run 9.8's @ 138 mph in a 3470 lb car
making 520 rwhp SAE through an automatic and a 9" Ford rear end.
It will easily support 550 flywheel HP and over 600 FwHP in more
aggressive applications. With massaged runners, enlarged
Throttle Body bores and internal inlet contouring this is our
best LT1 Intake value.
Street/Strip Ported Intake w/ Corrected Geometry
- This is the exact manifold listed above with much more
machinework. The ONLY way to make the ports of your intake
manifold align with the ports of the head is via machinework,
NOT "gasket matching." To save our stock short-block
customers money, our 190 cc & 200 cc CNC'd LT1's include
machining of the head that corrects the typical mismatch
producedby milling the head deck and going to a thinner gasket.
However, for extreme applications or any application where the
deck height of the block is altered, the flanges and end rails
of the intake manifold must be machined to
ensure proper fitment and port alignment. We will mock
your exact heads up on one of our test blocks to duplicate your
exact deck height, head gasket, and intake gasket combination
and machine the intake manifold to correct the geometry of the
flanges. You may be able to bolt your manifold on by
elongating bolt holes, but that will not correct the port
alignment or make it seal!
Ai LTx Vic Jr. or LTx Pro-Ram Single Plane - If
your a bracket racer yearning for a carburetor or are looking
for a no holds barred LTx manifold package, this is the one!
Whether it's a good old Vic Jr. or a tricked out Pro-Ram with
all the accessories, we have done it and have the results to
back up our claims. As this is a custom "one-off" oriented
item, please contact us for a specific price quote.