Andre brought his 416" W5 down from NY this AM & we proceeded to fight with carb issues all day, but finally got some stuff sorted out.
I did'nt really know many specs on his motor until today, I only did the heads for it a couple years ago & he built it himself with some help from Jimi V.
Apparently it's a 59* R1 block @ 4.07 bore, with a 4" callies crank... Steel rods, JE pistons ~13:1, custom Charlies pan, moroso 3 vane vac pump... Stock Car products external oil pump, moroso electric water pump...
Cam is a Bullet Solid Roller... & is not exactly what I would have ground but... I think if I recall correctly it's like 278/282 @ .050", .648"/.648" on 110 LSA. He said they put it in @ 109 LSA.... Actual lift he said was .610" @ valve. 1.5 T&D rockers....
Heads are old 1st Gen W5's, I hand ported & apparently have a 2.02 valve in, which is kind of unusual (I usually put a 2.08 in almost all 5's), but that's what he had when he brought me the heads to use...Castings are very porous & I was not able to go crazy on ports, they are just a nice conservative set of 5's
MP M1 LG runner intake 4150 flange, just port matched...
Ran 4 different carbs on it... His 1050 Dominator, new 8896 ontop of a 2" HVH tapered 4150-4500 adapter...
The 850 Wilson that I ran on 394 Dirt motor yesterday...(GREAT carb)
A customers new JP performance 1050 4150 series billet deal (1st run time it has seen)
& some 950 variant of Jimi Vignogna's
Andre's 1050 had a bunch of crap in it & made bad 1st pull... Put the 850 wilson on & got some good pulls, tuned timing, liked 35 best.
Total seal gapless rings took 4 pulls to seat was'nt thrilled with them..
Put vacuum pump on, picked up 30 HP....
Put 1050 JP carb on.... one pull, motor sounded horrible, power off.... Put 950 Vignogna on.... was'nt as bad as the 1050 JP, but was'nt anything special & still did not sound right.
Put 850 wilson back on to get back to our baseline & motor came right back around, sounded good...
Cleaned out the 1050 8896 Dominator & put it back on, & power came up a tad.... I think best with the 850 Wilson (slightly rich, never jetted it) was 647?
& we messed with the 1050 Dom & got 658 out of it... it is still not great carb, the EGT's were off much further spread with the 4500 than with the 4150 stuff. Would have probably picked up another 10-15 with a good Dominator on it.
The LG runner M1 just killed the TQ.... even being 416" with 13:1, it could not deal with it. The TQ per inch, VS: the 394 Flat tappet W2 is unsettling. The TQ peaks are also pretty darn high for 4" crank motor.... That is combo of 110 LSA cam in @ 109 & the massive plenum of the M1 LG runner. An INDY would really put some TQ in it & move powerband down a bit & probably broaden it...
I think 1.65 rockers, to crank up ramp speed, knock ~6 degrees duration out of cam, pull LSA back to 108, in @ 103-104, bump lift into the low .700's advertised, an INDY manifold converted to 4500 flange & a little better 4500 carb & you'd see a 720 HP/565 TQ piece. But it will do what he wants it to I think... his car is light enough to run where he wants to.
Anyhow....
658HP @ 7100 RPM
528TQ @ 5800 RPM
I was little disapointed in the power, but after looking over the combo, it seems like it made just about what the combo is capable of? As soon as he handed me the cam card, & I asked what rocker ratio it had on it.... & then glanced down & saw the Lg runner intake this morning I was a little leery about making a power prediction...
Anyhow, did'nt break anything & made decent HP #'s always a good day.