Pop's 440

H

heyoldguy

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I guess I haven't posted anything about this engine we just dyno'd. Pop built a 440 for his truck in 1997 and it wasn't used much. We needed an dyno mule to test our ported 346 factory iron heads so we pulled it from the truck and made a few changes to it.

.030" over 440
factory forged crank
factory rods with ARP bolts
L2355F pistons
8.9:1 compression
850 cfm Mighty Demon
Edelbrock Performer RPM intake
Crane Gold Race 1.6 rockers
Ported 346 heads with 2.08/1.81 valves
Comp XE285HL cam

RPM..........TQ/HP

3000.......426/243
3200.......455/277
3400.......484/313
3600.......501/343
3800.......507/367
4000.......511/389
4200.......504/403
4400.......496/415
4600.......487/426
4800.......483/441
5000.......493/469
5200.......493/488
5400.......486/500
5600.......486/518
5800.......454/501

We changed intake valves and intake manifolds and it eventually made 522 TQ and 540 HP.
 
Thanks for the update and posting it here also. Can't wait to get my bro in laws smogger 440 out to the track with the changes and see what I get.
 
Very impressive ! At what RPM did you get those 552 / 540 numbers ? Was that with larger intake valves, and what intake manifold did you use ?
 
500+ hp without stroking it.
I knew it could be done without breaking into a sweat.
Nice job.
 
Ripinator said:
Very impressive ! At what RPM did you get those 552 / 540 numbers ? Was that with larger intake valves, and what intake manifold did you use ?
Click to expand...

Well of course it was 522/540. Yes larger valves, single plane M1. I can't find that dyno sheet at the moment. Here is a back up run.

3000............414tq/236hp
3200...............432/263
3400...............473/306
3600...............491/336
3800...............495/358
4000...............501/382
4200...............497/397
4400...............496/416
4600...............497/436
4800...............505/462
5000...............516/491
5200...............513/508
5400...............520/534
5600...............507/540
5800...............473/522
 
commando1 said:
Ever think of breaking away from Mass Market Comp Cams? I see another 25 - 30 easy.
Click to expand...

Think of it all the time. We're having fun with what we have laying around.

Put in the 72R Racer Brown roller cam ground in 1967, 528tq/590hp, still with the 346 iron heads. We'll do some more tests Monday with this combination. Then put on the Indy EZ heads flowing 350cfm @ .600". The EZ heads will also give us 10.4:1 instead of the 8.9:1 we have now. Then we'll switch back to the Comp XE285HL and see how it will work with the EZ heads.
 
I'm going to have to sit down and play computer guy and make a spread sheet or something I'm having trouble keeping it straight in my head thanks.

Great work!
 
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