Kenneth Abbott
                                                           403 S.E. County Rd.
                                                             Crane, Texas 79731
                                                                432-558-2841
                                                 abbottracingheads@hotmail.com

 

  Home  About ARH  Machinery   Services   Companies Represented   GM 3800 V-6

                                              

         

On a daily driven 1998 Pontiac Firebird, our ported 3.8L heads, ported intake, a custom grind Comp cam (210/220, .512/.512, 112LSA), and some custom long tube headers made 271 rear wheel horsepower and 259 rear wheel torque on a stock short block.  The car has currently run a best of 13.30 at 102.44 MPH in 4500 density altitude.  More information about the car can be seen at www.freewebs.com/wickedsix98.

Dyno & Timeslip:

 
                                                                               
Abbott Racing Heads is currently sponsoring


www.fullthrottlev6.com

GM 3800 Series II V-6 Flow Figures
   
Flow numbers at 28" of water on a Superflow 600 Flowbench
 
Intake

Stock

Stage 3

Lift    
.100" 55.0 62.0
.200" 114.3 128.0
.300" 155.7 185.9
.400" 177.5 213.0
.500" 184.7 225.8
.550" 186.3 230.0
.600" 188.9 232.5
   
Exhaust

Stock

Stage 3

   
.100" 45.3 52.0
.200" 98.2 107.6
.300" 132.1 154.9
.400" 145.5 166.9
.500" 148.1 173.4
.550" 151.6 176.6
.600" 152.6 178.2
   


 


GM 3800 Series II V-6

Abbott Racing Stage 1 Cylinder Heads*,**
         These heads feature:
             ARH Competition valve job
             Bowl porting in the intake and exhaust ports
             Decks are milled .005" to ensure a flat gasket surface
             Comp 130# valve springs
             Comp steel retainers
             Guides cut down to clear high lift cams
             New valve seals
             Assembled and ready to run
             Check for cracks
These heads are for the cost conscious person who wants a little bit of port work, but are not ready for the all-out job. The bowls are ported to make the transition into and out of the combustion chamber as smooth and free-flowing as possible.
 
$$$
Abbott Racing Stage 2 Cylinder Heads*,**
         These heads feature:
             ARH Competition valve job
             Fully ported combustion chambers, intake, and exhaust ports
             Decks are milled .005" to ensure a flat gasket surface
             Comp 130# valve springs
             Comp steel retainers
             Guides cut down to clear high lift cams
             New valve seals
             Assembled and ready to run
             Check for cracks

These heads are for the person who wants a good flowing, fully ported set of cylinder heads, but does not want the extra cost of bigger valves, titanium retainers, and extra flow bench tuning.
 
$$$
Abbott Racing Stage 3 Cylinder Heads*,**
         These heads feature:
             ARH Competition valve job
             SI Stainless valves, 1.840" intake, 1.550" exhaust
             Fully ported combustion chambers, intake, and exhaust ports
             Decks are milled and combustion chambers are C.C.ed to spec size
             All ports are flowed and tuned on the flowbench to ensure they meet
               spec flow rates
             Comp 130# valve springs
             Comp titanium retainers
             Guides cut down for high lift cams
             New valve seals
             Assembled and ready to run
             Check for cracks
             Bronze valve guides

These heads contain every ounce of our 30 years of head porting experience. We believe these heads will out-perform any other heads on the market.
 
$$$
Abbott Racing Ported Upper & Lower Intake Manifold*
         The upper and lower intake manifolds are ported to match each other
         and the lower intake manifold is ported to match the cylinder heads.

* A $200.00 refundable core charge not included in the price.

** Occasionally, the valve guides in the heads will be too worn out and need to be replaced. We use bronze replacement guides and it is $10.00 per valve guide to replace them if needed. You will be notified prior to completion if the following must be performed.
 
$$$
 

IN DEVELOPMENT
Abbott Racing "Big Valve" Cylinder Heads

A common misconception is the exhaust needs to be ported as much or more than the intake. Research on our own IHRA Top Sportsman BBC engine plus other engine combinations has proven that a smaller exhaust port will make more power and will make the engine rev gain quicker than a large port, even on engines with superchargers and nitrous. A key to quick acceleration in the car, whether it is on the drag strip or the autocross track, is a quick accelerating engine. The smaller exhaust ports keep the velocity of the air high enough to let the motor accelerate as quickly as possible. An exhaust port too large leaves the engine sort of "out of breath" at the upper portion of the exhaust stroke in the engine. You may ask, why not keep a smaller intake port too? The reason the intake needs to be larger is because that is where the air and fuel enters the engine. It needs to flow as much as possible to get as much air and fuel into the combustion chamber to make a more powerful explosion. The difference between a set of heads working on naturally aspirated engine and engines with power adders is in the camshaft. Nitrous engines will run a little more exhaust duration. Engines equipped with turbochargers and superchargers will need the smaller exhaust port, less exhaust duration on the cam, and a wider lobe separation to keep the velocity up in the exhaust tract. The reason a wider lobe separation and less exhaust duration is used on high boost forced induction applications is because the exhaust is pushed out of the combustion chamber by the boost of the turbo or supercharger. If the lobe separation is too close, there is too much overlap of the intake and exhaust valves being open and some of the new and unused air/fuel charge is pushed out of the chamber into the exhaust.

UPDATE: R&D on the big valve cylinder heads is complete and we have come to the conclusion that the larger intake valve is not beneficial.  We tested with valve sizes ranging from 1.86"-1.88" and the amount of air moved through the ports changed very minutely and lowered the efficiency of the heads.  The smaller 1.84" valve should be the best candidate for the best power and best accelerating engines.

 

ARP Bolts and Studs
         Head Stud Kit, Hex Nuts
         Head Stud Kit, 12 pt Nuts
         Main Stud Kit, Hex Nuts
         Main Stud Kit, 12 pt Nuts
         ARP 2000 Rod Bolts
 


$$$

 

Cometic Multi-Layered Steel Head Gaskets
         MLS Head Caskets (available in .051", .065", or .074" thicknesses)

$$$
 
Comp Cams Valve Train
95-up 3800 Series II

Camshafts-

Our camshafts are ground using lobes engineered for the 3800 series II.  They offer un-matched performance with great street-ability.

            ARH Naturally Aspirated cam
                        -210/220 @ .050
                                    -.320" lobe lift on the intake, .512 with a 1.6 rocker ratio
                        -.320 lobe lift on the exhaust, .512 with a 1.6 rocker ratio
                        -112 lobe separation            

            ARH Turbo/Blower cam
                        -220/220 @ .050
                        -.320" lobe lift on the intake, .512" with a 1.6 rocker ratio
                        -.320" lobe lift on the intake, .512" with a 1.6 rocker ratio
                        -114 lobe separation

If you may have any particular specifications that you want for your camshaft, we can custom grind any cam for the same price.
 

 

$$$$

Comp 26918 Beehive Valve Springs, 130lbs @ 1.800" seat pressure set of 12 $
 
Comp 26915 Beehive Valve Springs, 105lbs @ 1.800" seat pressure set of 12 $
 
Comp 772-12 Titanium Valve Spring Retainers (fits P/N 26915 and 26918) set of 12 $
 
Comp 774-12 Steel  Retainers set of 12 $
Comp Hi-Tech Pushrods (6.900, 6.950, 7.00, 7.050, 7.100) set of 12, any length
Comp 850-12 OE Replacement Hydraulic Roller Lifters set of 12
Comp 875-12 OE-R Racing Hydraulic Roller Lifters set of 12 $
 
79-95 (2.8-3.4L) 60* V-6

Camshafts
            -212/212 @ .050"
            -.440" lift on the intake with a 1.5 rocker
            -.440: lift on the exhaust with a 1.5 rocker
            -110 Lobe Separation 

Comp Cams K-kit (includes, cam, lifters, springs, retainers, locks, timing chain, and valve seals)
 



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Diamond Forged Pistons
          Flat top, Total Seal ring set, 10.3:1 compression ratio
          Dish, Total Seal ring set, 9.4:1 compression ratio
          Dish, Total Seal ring set, 8.5:1 compression ratio
          Dish, Total Seal ring set, 8.0:1 compression ratio

If you don't see a piston with the compression ratio you're looking for, we can have them built to any specs for $912.50.
 



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Federal Mogul Performance Engine Bearings
         Performance Main Bearing Set (std, .001, .010, .020)
         Performance Rod Bearing Set (std, .001, .010, .020)
         Cam Bearing Set

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Fel-Pro Gasket Sets
         Cylinder Head and Cam Swap Set (head bolts included)
         Cam Swap Set
         Oil Pan Set
         Rear Main Seal Set (Teflon)

If you only need a specific gasket, call or email us and we can get what you need.
 

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Rollmaster Timing Sets
         Single Roller Timing Chain
         Double Roller Timing Chain

$$
 
TCI Torque Converters

         4L60E/700R4

         Super Street Fighter 10" Converter w/lock up, 3000 Stall
         Super Street Fighter 10" Converter w/lock up, 3500 Stall
         Competition 10" Converter w/lock up, 4000 Stall
         Trans-Scat Valve Body Kit, (contains performance servo assembly)
         Heavy Duty Servo Kit
         Racing Filter and Pan Gasket





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Abbott Racing Heads (C) 2006
Designed by Lauren Abbott