Hello All,

I'm currently putting parts together for a 410 to put in a 73 HighBoy. I have a 352 block that I've had bored to 4.050 ready to go. I just want to make sure everything I have is going to work and double check my math.

428 1U Crank - 3.984" Stroke
C3AE-C Rods - 6.49" Length
Silv-O-Lite 1139 Pistons - 1.66" Comp Height

Deck Height 10.17"

That combo should put me at 10.142", so .028" below deck.
With Cometic 0.080 head gaskets and Edelbrock RPM Heads, I should be running about 9.5 to 1 compression.

Also, what cam profile and carb would you guys suggest? Any input would be much appreciated.

Thanks,
Keegan

 

Someone will be along shortly to help you spend your money

 

Question is what do you want from truck ? drag racing , towing , weekend fun or tire destroyer ?

 

 

 

I am a fan of lunati cams ,made in the USA! the 62002 would probably get you in the 500hp/500tq area .
what intake ,carb and exhaust you going to run? i'll do a Desktop dyno of your specs .

 

You need a roller cam

(money spending commences)

 

roller would be nice , but not everyone has deep pockets

 

Hence my statement above

 

Didn't get to run the DD5 sim last night SWMBO had me running in circles with house stuff when i got home . I'll run it tonight .

 

ok I ran 2 sims with eddy performer RPM intake and 750cfm carb
run 1 with 62002 cam
run 2 with 62003 cam

RUN 1 62002


RUN 2 62003

 

The 62002 makes more power and torque up to 4000 rpm than the 62003
The average driver won't notice the extra 18 hp at 5000 rpm, but they would notice that extra 20+ lb ft torque from idle to 2500 rpm where they would spend a lot of time at
Run a sim with the 62001 cam and see if it gets the numbers down into a more useable rpm range, I've won a lot of races on the hole shot.

 

here's the 62001 run
i have the 62001 in my 390 it runs strong but doesn't have much of a choppy idle . If i were to do it again i would go with the 62002


62001

 

Looks like the 62001 gives up a good bit on top without much gain down low.
I'm surprised there's that much difference.
Just for comparison would you run Lunati's 10503 cam, that's their version of the factory 428CJ cam
It should give one a good base line to compare other cams to.

 

62002 looks like the best to me.

Roller would be nice though. How much more would you realistically get with a roller cam?