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Author Topic:   Jr motorsports
posted April 08, 2004 03:13 PM
Im thinking real hard about buying a shortblock from Jr. How many others out there have used these engines and what do you think about them. Im going with the 406 classic short block with upgraded rods, they gave me a price of $1,800, thats with scat crank and rods with speed pro pistons.Circle track camshaft installed and degreed, balancer and flexplate included.Plus 200 for shipping. Does this sound reasonable? Also i plan on using the 50cc pro topline heads on this motor, is there any problems I should expect with these heads. This is a flat top motor. Thanks

posted April 08, 2004 05:26 PM
When I bought the 50cc pt heads the didn't recomend using them on anything bigger than a 383.

posted April 08, 2004 05:34 PM
Thanks okie, I may just go with the 64cc then.

posted April 08, 2004 07:49 PM
Good guys to work with. I've used JR's machineshop for all my engine work, and I've always been happy with the results.

posted April 09, 2004 06:46 AM
This is good, no bad comments yet. I usally have my engines built but im kinda pressed for time on this one so hopefully it will work out ok. Thanks for the reply's

posted April 09, 2004 03:02 PM
i ran a stage one 383 from jrs. and man it was fast. dropped over have a second on asphalt.

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