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455, 430, 400 Buick Cams from Poston Buick


CAMSHAFT
GRIND
CAM
TYPE
LOBE
CENTER
DURATION
INTAKE EXHAUST
VALVE LIFT
INTAKE EXHAUST
POWER
RANGE
MAXIMUM
RPM
STAGE 1
HYDRAULIC
STOCK
STOCK - STOCK
STOCK - STOCK
IDLE-5500
6000
GS-112A
HYDRAULIC
112°
258° - 268°
.472 - .477
IDLE-5300
6000
GS-116
HYDRAULIC
116°
268° - 282°
.479 - .479
1500-5800
6000
GS-118
HYDRAULIC
118°
284° - 304°
.490 - .490
2500-6000
7000
GS-113
HYDRAULIC
113°
284° - 304°
.490 - .490
2500-6000
7000
GS-113A
HYDRAULIC
113°
286° - 302°
.510 - .491
2500-6000
7000
GS-107/118A
HYDRAULIC
118°
320° - 322°
.499 - .499
3000-6000
6500
GS-107
HYDRAULIC
107°
320° - 322°
.473 - .473
3300-6000
6500
GS-107A
HYDRAULIC
107°
320° - 322°
.499 - .499
3300-6000
6500
GS-112
HYDRAULIC
112°
320° - 322°
.473 - .473
2800-6000
6500
GS-105A
HYDRAULIC
105°
302° - 310°
.520 - .523
3200-6500
7200
GS-110
HYDRAULIC
110°
312° - 332°
.542 - .542
2800-6200
7200
GS-105
HYDRAULIC
105°
332° - 332°
.554 - .554
4000-7000
7500
GS-108A
HYDRAULIC
108°
326° - 338°
.600 - .608
4100-7000
7500
GS-108B
HYDRAULIC
108°
338° - 344°
.597 - .620
2200-7000
7500
GS-108C
HYDRAULIC
108°
344° - 344°
.626 - .626
4500-7500
7500
GS-108S
SOLID
108°
321° - 322°
.602 - .592
3500-6500
7500

STAGE 1. A faithful reproduction ground to exact factory Stage 1 specifications for the person who wants to keep their engine 100 percent factory stock, Smooth idle. Power range is from idle to 5500RPM. An excellent high performance street cam for both high and low compression engines. Use our Hi-Rev Lifters. Should use our PE106 Stage 1 Springs. $149.00

GS-112A. Very smooth idle with slight yet barely noticeable lope. Compatible with stock drive train although our Stage 1 springs are highly recommended. 20 horsepower over stock cam. Improves horsepower, torque and acceleration without affecting street ability. Works great with stock converter and gears. Excellent throttle response. Behaves like a stock cam on the street. Stock cam dies at 4200 RPM. This cam pulls supper strong from idle to 5300RPM, $149.00

GS·116. Produces lots of torque up to 5500 RPM. Power is concentrated between ·1500 and 5800 RPM. Good for extra .25 second and 2.5 MPH in 1/4 mile. 30 horsepower over factory cam. Dual pattern and wide lobe centers provides a smooth idle with a light lope, idles at 600RPM. Works in both high and low compression engines. Offers excellent driveability and low end response. Mild enough for the wife to drive to the grocery store, although still able to deliver a substantial increase in torque and power on demand. Works nice in an otherwise stock engine. Does hot hurt gas mileage. Loves Buick's switch pitch converter, but works great with stock converter. Ideal cam for heavier Riviera cars. Notched pistons are not required. Use our Hi-Rev, Lifters. Should use our PEl06 Stage1 Springs. 3.23 or larger gears are recommended. $149.00.

GS-118. Our best selling cam for the 400-430-455 engines. Tremendous power and torque up to 6000 RPM. Power range is 2500-6000 RPM. Best shift points are 5500. Maximum RPM is 7000. Nice idle at 800 RPM. Many cars are running in the 11's with this cam. Equally at home on the street or drag strip. Wide 118 degrees lobe centers make for a hot street/strip cam that behaves like much milder cam. This cam would be too wild for the street if it were on closer lobe centers. Works best with headers, intake manifold and our switch pitch converter, but also works great in a pure stock car. Good for extra .3 and 3 MPH in 1/4 mile Produces 35 horsepower over stock cam. Best cam available for a street/strip 400/430/455 Buick. Dual pattern has more exhaust than intake. Notched pistons are not required if heads and block have not been milled excessively. Works with power brakes and steering. Pulls super strong from 2500 RPM up. Works great in GS, Skylark and Riviera. Unbeatable for you street/strip application. Works with stock rockers but our PE115 Roller Rockers are advised. Our Hi-Rev lifters are required. May use our PE106 Stage 1 Springs although we highly recommend our PE107 dual springs and PE108 "no Wiggle" retainers, must have 9.5 to 1 or higher compression ratio for cam to work. 3.23 or larger gears are recommended. $149.00

GS-113. Similar to our GS-118 cam but ground on tighter lobe centers (creates more cylinder pressure to enhance low to mid range torque). Idle is slightly rougher than our GS-118 but still very street able. Idles at 900. Picks up .4 and 4 MPH in 1/4 mile. Produces 40 horsepower over stock cam. Pulls strong from 2500 to 6000. Will rev up to 7000. Best shift points and 5500. Should have headers, intake manifold to work well. Works in both high and low compression engines. Dynamite combination when run with a set of Roads Lifters in the 1971 and up low compression engines. Saves the costly expense of changing to high compression pistons in those engines. Des not need notched pistons if block and heads have not been milled excessively. Works with power brakes and steering. Our PE115 Roller Rockers are advised. Requires Roads Lifters or our Hi-Rev Lifters. May use our PE106 Stage 1 Springs although we highly recommend our PE107 dual springs and PE108 "NO Wiggle" Retainers 3.23 or larger gears are recommended. $149.00

GS-113A. We designed this cam for those who want the most cam possible with A/C and 3.42 gears More power than our GS118 and GS113 cams. Excellent power from 2500-6000 RPM. Works best with headers, good exhaust and intake manifold. 2800 stall torque converter is recommended. This cam is a killer combination when run with our 3000 switch-pitch converter. 45 horsepower over stock cam. Must use our PE106 Stage 1 valve springs. Check piston to valve clearance. 9.5 or higher compression ratio is recommended. $149.00

GS-107/118. Same cam duration as our GS-107 cam with the same lobe center as our GS-118 cam. Idles at 800-900 RPM. Works with our Stage 1 Springs. Will operate power brakes at idle. Good for extra .15 seconds and 1.5 MPH in 1/4 over our GS-118 cam. Most powerful, yet streetable 455-430-400 cam available. Almost the power of our GS-107 cam with the full street ability of our GS-118 cam. Must check piston to valve clearance. Needs 3000 converter. Our PE4000 switch pitch converter is an unbeatable combination with this cam. 3.5 or larger gears are recommended. $149.00

GS-107. Sounds like the baddest cam on the street. The short lift (.473 and long duration produces an ultra wild "Window Rattling" lope. Gives .4 and 4 MPH and 45 horsepower over stock cam. Power is condensed between 3300 and 6000. Needs our switch pitch converter to be driven on the street. Idles at about 1300. Has crisp throttle response. Needs gears, headers, manifold and converter to work well. Best shift point at 5800 RPM. Good bracket cam. Should use our PE115 Roller Rockers. Needs our PE107 dual springs and PE108 "No Wiggle" retainers. Needs 3500 stall converter and 3.50 or larger gears. Check piston to valve clearances. $149.00

GS-107A. Same lobe center and duration as our GS-107 cam. The lift has been changed to .499". The change produced 10 horsepower over the original .473 lift version. Needs 3500 stall converter and 3.50 or larger gears. Check piston to valve clearances. $149.00

GS-112. Same cam as our GS-107 but ground on wider lobe centers for crisper throttle response, better idle characteristics, and stronger top end pull. Picks up .45 second and 4.5 PMH in 1/4 mile. 50 horsepower over stock cam. Power is concentrated between 2800 to 6000 RPM. Idles at 900 PRM, but still sounds "bad". Poston Enterprises developed this cam in Dean Kaufmens's 1970 Stage 1 Pro Bracket car. Car runs 11.40 at 114 MPH with basic stock short block, untouched Stage 1 Heads, converter and 4.10 gears. Outstanding bracket racing cam. Has tremendous mid range and top end power. Very fast throttle response. Amazingly enough, this new cam is equally at home on the street. Happy customers were reporting that they are driving this cam daily on the street and blowing the doors off every "Brand X" street racer around. Customer John Hodle of Shaverton, Pa., wrote "I just can't say enough about the performance of the GS-112 cam, it has definitely out performed a similar camshaft from Kenne-Bell. The cam has gobs of power through a broader RPM range than the Kenne-Bell cam. I plan to use only Poston Enterprises parts and ma recommending you to all Buick owners in my hometown." Excellent for street cars with street gears (3.42 or lower and our 4000 switch pitch converter. Check piston to valve clearances. Should use our PE115 Roller Rockers. Must use our Hi-Rev Lifters and PE 107 dual springs and PE108 "NO Wiggle" retainers. Must use our PE180 double roller chain set (or equivalent). Needs 3000 converter and 3.50 or larger gears. $149.00

GS-105A. Superb mid range and top end performer. Tremendous power from 3200 RPM up. Power is condensed between 3200 and 6500 RPM. Best shift points at 6000 RPM. Has 1100 RPM Idle. Picks up .5 and 5 MPN in 1/4 mile. 55 horsepower over stock cam. Easy 11 second street/strip cam. Great for the serious street and bracket racer who also wants the fastest and hottest cam possible for street use. has "Bad" sounding idle. Needs 3500 converter and 3.500 or better gears to work well. Check piston to valve clearances. Needs our PE115 Roller Rockers. Must use our Hi-Rev or Rhoads Lifters, PE107 dual springs and PE108 "No Wiggle" Retainers. $159.00

GS-110. Ultimate street/strip cam. Idles surprisingly low at 800 RPM, with a healthy lope. Marginal vacuum with power brakes, but it can be done with good converter. Pulls like a freight train from about 2800 RPM up through 6200 RPM. Should have 10 to 1 or higher compression. Needs 3000 stall converter and 3.50 or larger gears. Must use our Hi-Rev lifters, PE107 dual springs and PE108 "No Wiggle" retainers. Works with stock rockers, but our PE115 roller rockers are recommended. Need to check piston to valve clearance. We picked up better than 3 miles per hour over a competitors similar cam in a 1979 Century Sport Coupe with 3.73, 200 4-R transmission and our Grand National PE2800 torque converter. Very broad power band. Awesome with a switch-pitch transmission and our PE400 switch-pitch converter. Good for extra 60 horsepower over stock cam. $159.00

GS-105.Our best and fastest bracket racing cam. Unreal top end power from 4000-7000 RPM. Best shift points at 6000 RPM. Idles at 1200 RPM. Good for extra .6 and 6 MPN in 1/4 mile. 65 horsepower over stock cam. Well set up 455 GS, Skylark cars are running in the 10s with this new Poston Enterprises' developed cam. Customer Bernie Stewart reports this cam put his 455 GS in the 10s and he still drives it on the street! Not designed for street use but it is being done. Easy on valve train. Excellent oval track cam if RPM is kept above 4000. Requires notched pistons. Must use our switch pitch or 4000 stall converter. Needs our PE115 Roller Rockers. Must use our Hi-Rev Lifters, PE107 dual springs, and PE108 "no Wiggle" retainers. $159.00

GS-108A. Good for extra .3 over our GS-105 cam. Not easily street driven but can be done with our 4000 switch pitch converter. Rough idle. Roller rockers are required. Requires dual springs, headers, intake manifold, gears, and 11 or higher compression ratio. Ported heads are advised. Notched pistons are required. Power range is 4100-7500 RPM. $169.00

GS-108B. Street use is not advised, but some customers are doing it with our 4000 switch pitch converter. Must have ported heads, dual springs, roller rockers, headers, intake manifold, gears and 11 to1 or higher compression ratio. Rough idle. Notched pistons are required. Tremendous mid-range and to-end performance. Power range is 4200-7500 RPM. $169.00

GS-108C. For race use only. Our most powerful cam for the Buick big block. For the 455 engine only. Cannot be street driven. Notched pistons are required. Needs all the good stuff to perform, including ported heads. Dual springs, roller rockers, 4500 converter, headers, intake manifold, gears and 12 to 1 compression ratio. Very rough idle. Best 455 race cam in the country. Awesome upper mid-range and top end power. Power range is 4500-7500 RPM. $169.00

GS-108S.This solid lifter cam will produce well over 600 horsepower in a 455 engine with intake manifold, headers, roller rockers, 12-1/2 to 1 compression pistons and ported heads. Needs our PE4000 switch pitch converter or 3500 stall non switch converter. Idle is rough. The best solid lifter bracket racing cam available! $169.00

CAM KITS FOR 455-430-400 ENGINES. Poston Enterprises cam kits are coordinated and manufactured specifically for your Buick engine. Our exclusive combination is the key to reliable and log term service with maximum performance. Kit A includes your cam choice, silicone chrome dual valve springs, chrome moly steel "No Wiggle" retainers, valve locks and Hi-Rev Lifters. #1017 for 455 engine$349.00; #1118 for 400-430 engines, $369.00. Cam kit B includes all parts in cam kit A with the addition of our heavy duty 5/16" chrome moly push rods, #1117 for 455 engine $425.00; #118 for 400-430 engines, $349.00. NOTE: You may substitute Rhoads Lifters in place of Hi-Rev Lifter for an additional $10.00 in cam kits #1017 and #1117 for 455 engines. Please add the word Rhoads after the cam kit number you order.

Contributed by "Dr. Frankenbuick"




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