Saturday, June 1, 2019

Engine parts list

The parts for the engine were purchased from various resellers like Tuumacid Oy, US-Parts Finn-Am Oy and Summit Racing where ever the products were available at the time of purchasing. The carburetor, distributor and headers were bought or swapped from a friend. In the below table the links refer mostly to Summit Racing as their website has their product information available at the time of this post.


Rotating Assemby1-94055BE KITSCAT 332 Stroker Kit
Main boltsARP-154-5001ARP
Crank shaft gasketsFEL BS40620FEL-PRO
Cam shaftCOM 31-242-3Comp Cams XE268
Cam bearingsSH510SClevite
LiftersCOMP 832-16Comp Cams
RockersCOMP 17043-16Comp Cams
Push rodsTFS-21407050Trick Flow
Timing setCOM CCA-2120Comp Cams
Gasket setFEL CS8548-4Gaskets
Cylinder headsEDL-5023Edelbrock e-Street
Head boltsARPARP
Head bolt bushingsEDL-9680Edelbrock
Head gasketsFEL-PROFEL-PRO
Oil pumpMELLING M-68Melling
Oil pump shaftARP 154-7904ARP
Oil pump boltsARP 150-6902ARP
Water pumpGMB 125-1420LGMB
Fuel pumpCarter M6588Carter
Oil panScott Drake
Scott Drake
Intake ManifoldWEI-8124Weiand
Intake gasketFEL-1250FEL-PRO
Intake bolt kitARP-154-2001ARP
CarburetorHOLLEY 0-80670Holley 4150
Air Cleaner9600-4GScott Drake
Valve coversMOR 68210Moroso
HeadersJBA 6651SJSJBA Headers
H PipeJBA 6651SHJBA Headers
Header gasketsFEL-1415FEL-PRO
Header bolt setARP-100-1209ARP
DistributorMSD-8503MSD e-Curve
Ignition coilMSD 8200MSD Blaster 2
Distributor capMSD 8437MSD
Plug wiresMSD-5553MSD
Flywheel bolt setARP-100-2801ARP
ClutchZOOM HP30-1AZoom
Pressure plate boltsARP 150-2201ARP

Sunday, April 7, 2019

Engine dyno

On an April Sunday morning the engine was placed in the dynometer bench and after replacing the dead MSD e-curve distributor with a more reliable one it was fired up. The motor was broken-in using altering RPM for about 20 minutes after which the oil was drained and the oil filter removed for inspection. Nothing special was found. Once the engine had cooled during the lunch break the head bolts were re-tightened, fresh oil filled with a new filter and the actual tuning of the engine would be started.





I must admit that my role during this event was more of an assistant. The owner of dyno and my friend that I had with me took care of all the analyses and decisions what to do next. The engine ran nice with the initial set-up but they were not happy with the air/fuel ratio (AFR) on the 5-8 cylinder bank. After changing jets and checking the fuel pressure and some other thing it was decided that we would try it with an other carburetor. The Holley 570 Street Avenger was replaced with a Holley 750 which gave a similar result. Also a couple of carburetor raisers were tested but the symptoms remained until a Holley 670 (#0-81670) with 1" raiser gave a result good enough. Now the engine was ready for the serious pulls. During them a couple of different ignition curves were tested until no improvement was found. Maximum advance was set to 32 degrees at 4400 rpm.




My initial target when beginning the motor project was 'to have as much power as the Shelby Mustangs had in 1965'  that being 306 HP.  My friend who has dynoed several engines estimated that this one might reach peak power of 350 HP which was hard for me to believe. I'd be happy with anything exceeding 300 but - to be honest- disappointed if it would remain under 300. We both were surprised when the result was:

Peak power 380 HP @ 5400 rpm
Max torque 545 Nm @ 4600 rpm


We did not rev the engine above 5500 rpm as it was easy to see that the curves were coming down. This would be the best that the heads would be able to do as well. I was happy with the result but more than that I was happy that everything went fine, the engine is now ready to be placed in the vehicle and even more happy that I have friends that have helped me with the project.

The torque curve exceeded expectations

380@5400 and 545@4600