Don Terrill’s Speed-Talk

So they must have taken a different block, cam etc? Tom NO, not the block ... used a Cleveland block or Ford race block but, they were E I I E E I I E port layout, like a Chevrolet, with a dedicated intake manifold, cam core and valve covers; needing custom headers. I do have all the Ford Performan...

PackardV8 wrote: ↑Sun Apr 21, 2024 4:41 pm How different were they from the Boss 302" Tunnel Port heads?

A lot different:
They were aluminum with squarish intake ports having removable centers and no water in the ends with big wide rectangle raised exhaust ports.

I understand that during the 1990s Junior Johnson was involved in the development of a set of cylinder heads for the Cleveland engine for NASCAR application. They were unusual in that they featured straight inlet ports with the pushrods going through them (in somewhat analogous fashion to the famou...

3pedals wrote: ↑Fri Apr 19, 2024 1:06 pm what does Summit have to say about ALL their Summit branded knock off crap? its all still just china sourced copied stuff....

They don't put someone else's name on it and try to pass it off as the originator's real product.

Cooler intake air temp is crucial for squelching detonation; even at under 200 degrees water.

Welcome to sloth talk, Home of the 5/64 ring iron headed 1957 tech. Here we will beat to death 1.94 or 2.02 valves. Highly discuss my 2" flow master ex, is it too much ? Oh hell yes! Where the whole board reads articles all day and hashes out what they haven't tried but are some how deemed exp...

Walter R. Malik wrote: ↑Sun Apr 14, 2024 10:44 am If Summit had any integrity they would pull ALL the Speedmaster stuff off their shelves and never sell any of the Speedmaster stuff again.

SUMMIT did exactly that; they won't deal any Speedmaster parts anymore.

Speedmaster is a POS company. Summit Is verging on it as well, selling this shit. https://www.youtube.com/watch?v=9dsHrSq8pso There will always be people who COPY someone else's successful part but, to actually put the originator's name on it and try to pass it off as the real thing, is just "...

If Summit had any integrity they would pull ALL the Speedmaster stuff off their shelves and never sell any of the Speedmaster stuff again.

I have a 440 Holmes wrecker body mounted on a 74 Chevrolet C30 chassis. Current setup is a Carolina Machine Engine High Torque 350 longblock, (whatever that consists of) with an Edelbrock Performer intake, 1406 Carb, HEI distributor and small headers. Sling wrecker is PTO driven off a SM465 transmi...

Speedmaster is a POS company. Summit Is verging on it as well, selling this shit. https://www.youtube.com/watch?v=9dsHrSq8pso There will always be people who COPY someone else's successful part but, to actually put the originator's name on it and try to pass it off as the real thing, is just "...

Walter , thank you for the clarification on the rod side clearance , can you give me an idea on the vertical clearance and what rod journal size would you recommend for a 706ci engine NA for starters. thanks again. I can't recommend anything like that 'cause I don't build them ... I have witnessed ...

mdabbott2009 wrote: ↑Tue Apr 09, 2024 2:20 pm Does anyone know any about these? There for sale fairly reasonable on Facebook post to be brodix *10

All I can say is that the Brodix 10 was a good head ... about the porting, I have no idea.

Why do you recommend .040 side clearance , that seems excessive to me , I would not want to exceed .025 to keep the rods from dancing from side to side , what would you suggest for vertical clearance , with what weight oil , also try the right side tomorro , your a little grumpy. Have a great day :...

nominal is 2.200 When running at about 7,000 RPM, a good steel 4340 crankshaft having a 5.300" stroke with that rod journal diameter will get about .035" shorter from end to end simply because of flex; be certain that the involved rods will have no angularity when running. Then the rod be...