What Fits: We used Prothane #7-505 polyurethane engine mounts to design with. The header will also fit solid motor mounts, Moroso #62510. It does not fit a mid plate.
This header has excellent ground clearance. We used a Milodon low profile 7 quart oil pan #30951 or #30956 to design with. These pans offer easy access to the oil filter. The bottom of the header was ½” higher than the bottom of the pan. These oil pans have a kick out sump which the header has plenty of room for. Measuring from the side of a stock oil pan we have 4” of room on the driver side and on the passenger side we have
2 ¼” at mid pan with 3” at the bottom of the pan. If your oil pan has a driver side sump kick out that is under the filter it may make access to the oil filter difficult. With a straight sided oil pan the filter will come out the bottom easily. This requires the Powermaster #9540 which is a High Torque 6” mini starter.

The steering column is the big issue with this chassis, but we still have good access the spark plugs. The header is also designed for clutch linkage and a power brake booster. If you are using a Lakewood type scatter shield you will have to slightly trim the outer edge of it under the starter area for header clearance. If your car has original factory air conditioning we can make the header for that, but we need to know about it.
In 1968 and 1969 GM used 3 different frame stands for the front motor mounts. The frame stand that is needed for our header measures 1” from the bottom of the frame stand up to the center of the big bolt hole. (See photo) You can use a Prothane #7-505 poly engine mount or a Moroso #62510 solid engine mounts. This is called the tall narrow mount.
We have included a drawing that shows the measurements for the correct motor mounts and frame stands. You can buy the correct frame stands from Original Parts Group if needed. Their part number is #97CH001.
This header requires a Power Master #9540 or #9500 starter, or a CVR #5323 starter. This header will not fit factory type column shifter linkage, ask about Lokar ACA1800 replacement linkage.

We keep the Power Master #9540 starters in stock.
This header does not fit a mid plate.

615 page #2
Header installation: Pro-Tour Style
Passenger side, remove the starter and spark plugs, install the header from the bottom. With the header in place but not bolted to the head reinstall the starter, then bolt the header in place. If you have a scatter shield bell housing you will have to raise the engine to install the passenger side header.
If your Chevelle has a factory air conditioning box on the fire wall you will have to raise the engine to install the passenger side header

Driver side, Remove the clutch linkage, oil filter and spark plugs. This header usually installs from the bottom without raising the engine, but you may have to raise the engine slightly to get past the steering column. Install the header from the bottom. When you let the engine back down be sure that engine has centered itself on the frame stands.
Refer to the header installation tip’s page for additional information.

Header Installation: Race Style
The race style header has single tubes and slip on collectors.

Driver side, install tubes from the bottom.
Install #1 tube, only start the header bolts enough to hold the tube in place.
Then install #3, #5, #7, only snug the header bolts, do not tighten.
Next install the collector that has one of the mounting tabs stamped with a “L”.
One of the header tubes also has a “L” stamped on the mounting tab, those 2 “L” tabs go together when assembled. Once the collector is installed and bolted , you can tighten the header bolts.

Passenger side,
Install #2 (front tube) start one front header bolt, just enough to hold tube.
Install #4 (second tube) start one front header bolt only.
Next install the starter.
Now install the second header bolt in both front tubes.
Install #8 (rear tube) from the bottom and start both header bolts.
Install #6 (third tube) from the top, start both header bolts.
Snug all header bolt, but not tight.

Now install the collector in same sequence as the driver side, the passenger collector will have a “R” stamped on one of the mounting tabs.

Be sure to read the installation tip’s page before installing the headers.

Thank you for selecting Lemons Headers!
If you have any questions, give us a call 805-239-8998.

The post #BBPT-615 – ‘68-’72 CHEVELLE BIG BLOCK – BB Pro Tour header for stock chassis appeared first on Lemons Headers.

What Fits: We used Prothane #7-505 polyurethane engine mounts to design with. The header will also fit solid motor mounts, Moroso #62510. It does not fit a mid plate.
This header has excellent ground clearance. We used a Milodon low profile 7 quart oil pan #30951 or #30956 to design with. These pans offer easy access to the oil filter. The bottom of the header was ½” higher than the bottom of the pan. These oil pans have a kick out sump which the header has plenty of room for. Measuring from the side of a stock oil pan we have 4” of room on the driver side and on the passenger side we have
2 ¼” at mid pan with 3” at the bottom of the pan. If your oil pan has a driver side sump kick out that is under the filter it may make access to the oil filter difficult. With a straight sided oil pan the filter will come out the bottom easily. This requires the Powermaster #9540 which is a High Torque 6” mini starter.

The steering column is the big issue with this chassis, but we still have good access the spark plugs. The header is also designed for clutch linkage and a power brake booster. If you are using a Lakewood type scatter shield you will have to slightly trim the outer edge of it under the starter area for header clearance. If your car has original factory air conditioning we can make the header for that, but we need to know about it.
In 1968 and 1969 GM used 3 different frame stands for the front motor mounts. The frame stand that is needed for our header measures 1” from the bottom of the frame stand up to the center of the big bolt hole. (See photo) You can use a Prothane #7-505 poly engine mount or a Moroso #62510 solid engine mounts. This is called the tall narrow mount.
We have included a drawing that shows the measurements for the correct motor mounts and frame stands. You can buy the correct frame stands from Original Parts Group if needed. Their part number is #97CH001.
This header requires a Power Master #9540 or #9500 starter, or a CVR #5323 starter. This header will not fit factory type column shifter linkage, ask about Lokar ACA1800 replacement linkage.

We keep the Power Master #9540 starters in stock.
This header does not fit a mid plate.

615 page #2
Header installation: Pro-Tour Style
Passenger side, remove the starter and spark plugs, install the header from the bottom. With the header in place but not bolted to the head reinstall the starter, then bolt the header in place. If you have a scatter shield bell housing you will have to raise the engine to install the passenger side header.
If your Chevelle has a factory air conditioning box on the fire wall you will have to raise the engine to install the passenger side header

Driver side, Remove the clutch linkage, oil filter and spark plugs. This header usually installs from the bottom without raising the engine, but you may have to raise the engine slightly to get past the steering column. Install the header from the bottom. When you let the engine back down be sure that engine has centered itself on the frame stands.
Refer to the header installation tip’s page for additional information.

Header Installation: Race Style
The race style header has single tubes and slip on collectors.

Driver side, install tubes from the bottom.
Install #1 tube, only start the header bolts enough to hold the tube in place.
Then install #3, #5, #7, only snug the header bolts, do not tighten.
Next install the collector that has one of the mounting tabs stamped with a “L”.
One of the header tubes also has a “L” stamped on the mounting tab, those 2 “L” tabs go together when assembled. Once the collector is installed and bolted , you can tighten the header bolts.

Passenger side,
Install #2 (front tube) start one front header bolt, just enough to hold tube.
Install #4 (second tube) start one front header bolt only.
Next install the starter.
Now install the second header bolt in both front tubes.
Install #8 (rear tube) from the bottom and start both header bolts.
Install #6 (third tube) from the top, start both header bolts.
Snug all header bolt, but not tight.

Now install the collector in same sequence as the driver side, the passenger collector will have a “R” stamped on one of the mounting tabs.

Be sure to read the installation tip’s page before installing the headers.

Thank you for selecting Lemons Headers!
If you have any questions, give us a call 805-239-8998.

The post #BBPT-615A BB Pro Tour header for stock chassis-version can be made for factory AC appeared first on Lemons Headers.

What Fits:
We designed this header with the engine in the stock location setting on small block frame stands for the front motor mounts with Moroso #62510 solid motor mounts or Prothane #7-505 polyurethane motor mounts. It has 2 tubes on each side that go around the frame which will require that you trim your inner fender wells for clearance. It also allowed us to get the best possible ground clearance, oil pan room and spark plug access.
It WILL fit motor plates, aftermarket “A” arms and a power brake booster, but it will NOT fit a factory air conditioning box on the fire wall or *column shifter linkage. Factory clutch linkage will have to be modified to work (ask our sales person for more info.). A deck height and raised exhaust port combination of 1” or more may require moving the steering column outward for clearance. It is intended for use with skinny drag racing type front tires for maximum clearance with the tubes around the frame. Your master cylinder brake lines will have to be rerouted for clearance.
This header will fit almost all mini starters except a Mezier #400, and will not fit a stock GM full sized starter. Available oil pan room for kicked out sumps, measuring from the side of a stock oil pan we have 4 ½” of room on both sides. The oil filter is very accessible and the starter can be removed unless you have a big pan kick out. Spark plug access is very good we recommend using a 45 or 135 degree angled spark plug wiring boot. We hold the headers and collectors up as high as possible for ground clearance. The bottom of the header is even with the bottom of a stock oil pan. If you will be using a large exhaust system we offer a replacement chrome moly transmission cross member for additional exhaust room.
We carry Power Master #9540 starters.
Installing the headers: It is important that you read our Yellow (Header Installation Tips) page before installing your new Lemons Headers, it will make the installation go easier and save you time

Driver side: install #1 then #7 from the bottom and snug the header bolts, but don’t tighten. Then install #3 and #5 these are the tubes around the frame, snug the bolts. Now install the collector and go back and tighten all the header bolts.

Passenger side: install #2 and #4 from below with the starter in place, then #6 and #8 these tubes go around the frame, then install the collector. If there is such a thing as an easy header to install this is it.

Thank you for selecting Lemons Headers!
If you have any questions give us a call at 805-239-8998

The post #BBR-545 – ‘68-’72 CHEVELLE BIG BLOCK – BB Race header for stock chassis appeared first on Lemons Headers.