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Search found 263 matches

by Bos's5.0
Fri May 13, 2022 5:48 pm
Forum: Engine Tech
Topic: Question for the BBF guys......
Replies: 24
Views: 1406

Re: Question for the BBF guys......

Is there any side benefit to Ford having put the valves that close together? The Ford has a much larger bore than a Chevy, so why did they put them that close? The canted valve thing was always about de-shrouding the valves, but it seems Ford went overboard. Are the Fords getting any benefit from ho...
by Bos's5.0
Wed May 11, 2022 11:02 pm
Forum: Engine Tech
Topic: GM 604 sealed crate motor theory....
Replies: 3
Views: 425

GM 604 sealed crate motor theory....

I borrowed a head and intake from my old boss. These are used on the sealed 604 crate motor. Aluminum head 12367712 and aluminum single plane intake. I was struck by how small the ports were in the intake. Anyways, the heads flowed .5---267.6 .55--255.1 .6---257.2 With intake .5---226 .55--228 .6---...
by Bos's5.0
Wed May 11, 2022 7:38 pm
Forum: Engine Tech
Topic: Ford head question......
Replies: 5
Views: 424

Re: Ford head question......

nhrastocker wrote: Wed May 11, 2022 6:51 pm
Bos's5.0 wrote: Wed May 11, 2022 5:14 pm Does anyone know of an inline 9* Ford small block head?

I ended up with some pistons, and those are the specs for them.
Edelbrock Victor Glidden 2 cylinder head
Ahhh thank you. =D>
by Bos's5.0
Wed May 11, 2022 5:14 pm
Forum: Engine Tech
Topic: Ford head question......
Replies: 5
Views: 424

Ford head question......

Does anyone know of an inline 9* Ford small block head?

I ended up with some pistons, and those are the specs for them.
by Bos's5.0
Thu Nov 04, 2021 10:44 pm
Forum: Engine Tech
Topic: Explain this GM 602/604 Crank Balancing numbers
Replies: 22
Views: 1220

Re: Explain this GM 602/604 Crank Balancing numbers

I'm curious if anyone could explain to me what is going on here with these balancing numbers as instructed by GM on their sealed race 602/604 engines. I'm not an engine builder or professional, but these are weird. IMG_20211103_115632302.jpg You you tell me exactly what document that chart is in ? ...
by Bos's5.0
Thu Nov 04, 2021 6:14 pm
Forum: Engine Tech
Topic: Explain this GM 602/604 Crank Balancing numbers
Replies: 22
Views: 1220

Re: Explain this GM 602/604 Crank Balancing numbers

Dave Koehler wrote: Thu Nov 04, 2021 4:24 pm More alien common core math mysteries.
Why is a 350 called a 602?
That's "lingo" in the sealed crate engine world. 602 and 604 are common GM crate engines.. last 3 digits of the factory part no.
by Bos's5.0
Thu Nov 04, 2021 6:13 pm
Forum: Engine Tech
Topic: Explain this GM 602/604 Crank Balancing numbers
Replies: 22
Views: 1220

Re: Explain this GM 602/604 Crank Balancing numbers

1: If that were the case the end journal numbers would be greater than the middle two....in a normal scenario. I'm not sure about that. My understanding. The point of external balance is because there wasn't room to make the crank counterweights big enough. I have never balanced a crankshaft so bel...
by Bos's5.0
Thu Nov 04, 2021 3:46 pm
Forum: Engine Tech
Topic: Explain this GM 602/604 Crank Balancing numbers
Replies: 22
Views: 1220

Re: Explain this GM 602/604 Crank Balancing numbers

One thing I forgot is on these vortec motors, the flexplate has a small weight on it. This is standard issue. I've never seen personally or heard of balancing where you have 3 different weights hanging off your crankshaft and I can't imagine this is the mathematics for balancing the assembly withou...
by Bos's5.0
Thu Nov 04, 2021 3:32 pm
Forum: Engine Tech
Topic: Explain this GM 602/604 Crank Balancing numbers
Replies: 22
Views: 1220

Re: Explain this GM 602/604 Crank Balancing numbers

One thing I forgot is on these vortec motors, the flexplate has a small weight on it. This is standard issue. I've never seen personally or heard of balancing where you have 3 different weights hanging off your crankshaft and I can't imagine this is the mathematics for balancing the assembly without...
by Bos's5.0
Wed Nov 03, 2021 2:30 pm
Forum: Engine Tech
Topic: Explain this GM 602/604 Crank Balancing numbers
Replies: 22
Views: 1220

Explain this GM 602/604 Crank Balancing numbers

I'm curious if anyone could explain to me what is going on here with these balancing numbers as instructed by GM on their sealed race 602/604 engines. I'm not an engine builder or professional, but these are weird.
IMG_20211103_115632302.jpg
by Bos's5.0
Sun Oct 17, 2021 9:46 pm
Forum: Engine Tech
Topic: Guys who CNC port
Replies: 21
Views: 2036

Re: Guys who CNC port

If you were.. say Brodix and a company like AFR came out with a BBC head that just stomped on every version you offer... are you telling me you wouldn't get your hands on one to see if they figured out a port and combustion chamber shape that is next level? And how could you not "incorporate" that i...
by Bos's5.0
Tue Sep 18, 2018 11:21 pm
Forum: Engine Tech
Topic: Main girdles
Replies: 66
Views: 7049

Re: Main girdles

girdle.jpg
VG350-1.gif
by Bos's5.0
Fri Aug 10, 2018 10:10 am
Forum: Engine Tech
Topic: Darin Morgan Pro-Stock Ford Head......
Replies: 155
Views: 61156

Re: Darin Morgan Pro-Stock Ford Head......

Factory Stock has more followers than Pro Stock From a long time Pro Stock fan, who has been disinterested in Pro Stock for several several years now. Factory Stock is cool, very fun to watch and follow. Pro Stock is all but dead to me....the changes have been too little, too late. Once they have c...
by Bos's5.0
Wed Aug 01, 2018 10:25 pm
Forum: Engine Tech
Topic: 460 ford engines differences
Replies: 6
Views: 1207

Re: 460 ford engines differences

also I believe they late model is externally balanced?
by Bos's5.0
Thu May 24, 2018 6:52 pm
Forum: Engine Tech
Topic: Holley Avenger EFI on Budget 532 lbs-ft 383
Replies: 56
Views: 7509

Re: Holley Avenger EFI on Budget 532 lbs-ft 383

I wonder why the OEM's don't use tight lobes with tons of overlap.. I mean it sounds like the greatest thing ever.

Also, heaven help everyone else who has the share the road with your motherthumpr cams and visible vapor trail of unburnt fuel.