When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Hi guys I havent been around for a while - here is my latest idea .
I am looking for more power and would like to build my 360 into a 410 using 390 rods , 1976 ford truck 390 pistons and a new scat 428 crank .
I just did the deck-height calculations using the said pistons and rods .
Crank Throw 1.99
Piston Compression height 1.680
Rod lenght ( center to center) 6.488
equals 10.158 subtract the block deck height 10.17 =
-0.012 - does this mean the piston is sticking out of the block -0.012?
If that is the case then how is this combination going to work?
any help would be great thanks
Jon
Chas1234; the .012" is your deck height or how far the piston is down in the bore at tdc. If you use 72 cc 360-390 heads you'll have 10.5 compression as what 410's had. Use 427 LR or 428 CJ heads which have larger combustion chambers to get you pump gas compression unless this is a "race truck". I'm wanting more torque and the 410's 17 years old, so i'm going to a 484" in the future.
Note: if you planning on using a scat crank..there ground for a smaller con rod...chevy at 2.200 ..I think..someone will corect me if im wrong here....
I know Greg(gtex) is running a scat in his 446 and has custom rods? Russ
I think SCAT may have them ground with standard FE journal sizes and with the BBC rod sizes. Especially wit hthe standard 428 strok crank, I'm sure they have standard FE sizing to be a stock replacement.....