
421-02-8037 Thumper Power Small Block Manifolds (Black)
Thumper Power Small Block Manifolds (Black)(Sold in pairs)
IMCO's affordable alternative to stock cast iron Chevy manifolds. Our all cast aluminum manifolds will increase Horsepower, RPM, and Torque by 5 to 7% over stock cast iron manifolds and risers at a fraction of the cost. We have designed Thumper Power for everyone whether you're a high performance or family recreation boater. Kits are available for Chevy big block, small block, and V-6 motors. Available in black powder coated, optional hard anodized for corrosion (prior to powder coat), and polished. (SOLD IN PAIRS)
Shift, EFI, or ECM brackets sold separately.
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Kit Includes |
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QTY |
Description |
P/N |
2 |
TP-Small Block Manifolds (Black) |
02-1003 |
12 |
3/8-16 x 4 3/4" Bolts |
08-010806232 |
8 |
3/8-16 x 2 1/2" Studs |
08-130806141 |
8 |
3/8-16 Nuts |
08-200806001 |
20 |
3/8" AN S/S Washers |
08-100800001 |
2 |
3/8 NPT to 1" Hose 90° Fittings |
09-2016 |
6 |
3/4 NPT Pipe Plugs Brass |
09-2017 |
2 |
Manifold Gaskets |
11-1009 |
2 |
Riser Gaskets |
11-1007 |
4 |
Compression Seals |
11-4003 |
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421-02-8039 Thumper Power Small Block Manifolds (Polished)
Thumper Power Small Block Manifolds (Polished) (Sold in pairs)
IMCO's affordable alternative to stock cast iron Chevy manifolds. Our all cast aluminum manifolds will increase Horsepower, RPM, and Torque by 5 to 7% over stock cast iron manifolds and risers at a fraction of the cost. We have designed Thumper Power for everyone whether you're a high performance or family recreation boater. Kits are available for Chevy big block, small block, and V-6 motors. Available in black powder coated, optional hard anodized for corrosion (prior to powder coat), and polished. (SOLD IN PAIRS)
Shift, EFI, or ECM brackets sold separately.
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Kit Includes |
|
QTY |
Description |
P/N |
2 |
TP-Small Block Manifolds (Black) |
02-1004 |
12 |
3/8-16 x 4 3/4" Bolts |
08-010806232 |
8 |
3/8-16 x 2 1/2" Studs |
08-130806141 |
8 |
3/8-16 Nuts |
08-200806001 |
20 |
3/8" AN S/S Washers |
08-100800001 |
2 |
3/8 NPT to 1" Hose 90° Fittings |
09-2016 |
6 |
3/4 NPT Pipe Plugs Brass |
09-2017 |
2 |
Manifold Gaskets |
11-1009 |
2 |
Riser Gaskets |
11-1007 |
4 |
Compression Seals |
11-4003 |
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421-02-9190 Thumper Shift Bracket - Must order 1 of each bracket per engine. Also used with Powerflow LS Chevy Exhaust
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This Part has options, please click the button below to order.
137-9428 Alpha Gen 1 - Saddle Mount is 3.42" Wide
The tie bar saddles are formed out of 1-1/4" thick 316 stainless steel Pivot pins are machined from 3/4" diameter round bar and are stepped for a 3/16" thick retaining washer Clevis ends are investment cast 316 for superior strength and drive misalignment The tie bar is machined from solid 1" diameter and polished to a mirror like finish.
Tie bars take 7-10 days to build and are NON-RETURNABLE
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This Part has options, please click the button below to order.
137-9429 Alpha Gen 2 - Saddle Mount is 6.37" Wide
The tie bar saddles are formed out of 1-1/4" thick 316 stainless steel Pivot pins are machined from 3/4" diameter round bar and are stepped for a 3/16" thick retaining washer Clevis ends are investment cast 316 for superior strength and drive misalignment The tie bar is machined from solid 1" diameter and polished to a mirror like finish.
Click here to see part drawing and replacement parts breakdown
Tie bars take 7-10 days to build and are NON-RETURNABLE
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This Part has options, please click the button below to order.
137-9427 Dual TRS Outdrive Tie Bar
The tie bar saddles are formed out of 1-1/4" thick 316 stainless steel Pivot pins are machined from 3/4" diameter round bar and are stepped for a 3/16" thick retaining washer Clevis ends are investment cast 316 for superior strength and drive misalignment The tie bar is machined from solid 1" diameter and polished to a mirror like finish.
Tie bars take 7-10 days to build and are NON-RETURNABLE
Click here to see part drawing and replacement parts breakdown
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This Part has options, please click the button below to order.
137-9423 Tie Bar - Bravo 1, 2 and 3
The tie bar saddles are formed out of 1/4" thick 316 stainless steel and are 2" wide. Pivot pins are machined from 3/4" diameter round bar and are stepped for a 3/16" thick retaining washer Clevis ends are investment cast 316 for superior strength and drive misalignment The tie bar is machined from solid 1" diameter and polished to a mirror like finish.
Click here to see part drawing and replacement parts breakdown
Tie bars take 7-10 days to build and are NON-RETURNABLE
The center to center of the drives must be given to order this part as it is built to customers specs.
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421-TB-4 Tie Bar Material 2.250” Dia x .250” Wall Polished SS Per Inch
NOTE: This is not a Tie Bar. If you need additional length added to the base 18" length of an applicable Imco Tie Bar, add 1 quantity for every inch extra you need. For example, you need a 32" tie bar, you need to add 14 quantity of this part to your order along with your choice of Imco Tie Bar model.
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421-02-7548 Tiller Arm and S/S Allen BoltTiller Arm and S/S Allen Bolt (Sold Each)
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421-TP-1 Tilt Pin Ass. All Mercury HP Outboard Motor Brackets Polished 304 SS
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421-10-6041 Tower Race (SCX, SCX4, SCXT, SCX4T)
Tower Race, race used on case tower and on the cap.
2 per Upper Gear Assembly
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421-TB-34 Transom Bracket Kit for 34.000” Drive Centers Polished 316/304 SS
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421-TB-345 Transom Bracket Kit for 34.500” Drive Centers Polished 316/304 SS
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421-TB-35 Transom Bracket Kit for 35.000” Drive Centers Polished 316/304 SS
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421-TB-355 Transom Bracket Kit for 35.500” Drive Centers Polished 316/304 SS
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421-TB-36 Transom Bracket Kit for 36.000” Drive Centers Polished 316/304 SS
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421-TB-32 Transom Bracket Kit LH Reverse Polished 316/304 SS
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421-TB-31 Transom Bracket Kit LH w/ Bulkhead Tubes Polished 316/304 SS
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421-TB-22 Transom Bracket Kit RH Reverse Polished 316/304 SS
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