470 TrickFlow 240 Solid Flat Tappet Cam Dyno Results

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I didn't build it I got it this way other than tuning. 440 bored.060 4.15 crank. I don't know the comp. ratio but it's probably about 9 to 1 at its best. Runs on 87, kerosene whatever. It's a 660 cam 260 dur. solid roller blows 110 with a real gauge. Indy sr heads opened up to max wedge size, indy intake with a 1050. Number matching to the car. And they built it with stock rods! Makes me nervous. I shift at or under 6 but had it a bit higher several time 6800 or so just can't help myself. It keeps pulling. Haven't driven in the last 2 years plan is to use another block new rods and pistons maybe 14 to 1. No more 87. lol. Should be at the limit of the stock block there. And at the trans limit, Hemi 4 speed. Run it with a 3.54 gear
Nice combo
 
My six pack was a stock set up with just tuning/ jets springs. But there was a big difference in mine with the 1050 especially above 4500.
 
So I’ve swapped my 512 back and forth. It’s a bit stronger with an Indy intake that’s MW ported (my heads are in between) with a 1050 than the six pack but I don’t think it’s a blow out. I’ve done quite a bit of work on my six intake throughout the last few years. I also run a 4412 center carb with the mechanical outboards (they have pumpers). It would make for a fun track day but, it’s hard to run the car cause it doesn’t have a bar and they get their panties in a bunch when it clicks off 10’s without one… lol
Any pictures of the sixpack setup?
 
Any pictures of the sixpack setup?


I have a ton but I hate to muck up someone else’s thread. This is the mechanical carb set up. I’ve also ran a vacuum six pack on it as well as a few different 4150’s and a ton of dominators (I built for other peoples cars). This car has sort of become a tuning experiment for me. All started with an 02 meter.. lol


66315767-FC3B-4A54-9709-0429CDD78900.jpeg
 
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Ok so this one was a long journey but a very satisfying one in the end. A young man showed up at the shop in the summer of 2017 asking about a big block build based on a 400 he had--said he had found me through some of the EMC magazine articles and wanted a pretty serious street engine for his 4 spd Belvedere? Polara? We set out a plan to build a 470 with a steel anvil reliable solid flat tappet camshaft and all the other street use dictated compromises. Pumpgas, decent stable idle, single 4 carb, and some decent RPM capability.....
At the time I was commissioned to machine the block and spec out a custom camshaft. So I line honed , decked, bored/honed, 1/2" Hemi p-u, oiling mods, installed coated cam bearings etc.... He ordered a 440 source 470 kit in the meantime. Sometime later he committed to using the TF 240's and the static compression came in a little too high with the Icon flat tops so I CNC'd a conical dish to gain a measured 4cc's for a final comp ratio of 10.78. The cam took me about a week of mulling over and is maybe a little unconventional.
Cam is 251/250 .593/.585 <1.6 113 LSA .020"/.016" lobe lift can be back calculated but the lobes are not all that aggressive in the name of longevity.

Fast forward to summer of 2021 and the customer now has the TF 240's and I offer to flow test them for my knowledge and I believe I posted here the flow numbers I recorded. They flowed pretty much what TF advertised which puts TF very high in integrity in my books.

Long story longer...The customer and his father assemble the engine and brought it to me for cam breakin and dyno--Yes outer springs only and I installed the innersprings after a successful fire up and automated breakin cycle. Here is a picture--Any guesses as to dyno results? Oh and the customers goal was 600hp with a civil idle and low speed driveability as he lives in a big city and sees a lot of stop and go traffic with some RPM as he wants to fool around with some of the high end exotics that are often on the highways in and around the big cities. I'll admit that I consider 600hp out of this kind of unlikely when you really see the sum of the parts. J.Rob

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Will you share the details of the oiling mods done to this motor? Thank You.
 
Will you share the details of the oiling mods done to this motor? Thank You.

Enlarge oil pickup to 1/2" NPT Hemi size and radius all instersections with the backside of a round carbide burr, disassemble oil pump and radius and remove all casting marks with a sandroll, remove oil pump relief valve and polish with some Scotchbrite, enlarge mains 2,3,4 with a long 9/32" drill bit, also since this is a 4spd car drill rear face of thrust bearing to intersect main oil feed 1/32" diameter. That's pretty much it. Engine had very good oil pressure trends with 76psi at 3800rpm-6000rpm WOT and 35-37psi hot 190F+ idle (1080-1100rpm). J.Rob
 
Thanks for the post RAMM. Trying to get my 470 built myself if I can ever get the block finished at the machine shop. They're killing me.
 
Enlarge oil pickup to 1/2" NPT Hemi size and radius all instersections with the backside of a round carbide burr, disassemble oil pump and radius and remove all casting marks with a sandroll, remove oil pump relief valve and polish with some Scotchbrite, enlarge mains 2,3,4 with a long 9/32" drill bit, also since this is a 4spd car drill rear face of thrust bearing to intersect main oil feed 1/32" diameter. That's pretty much it. Engine had very good oil pressure trends with 76psi at 3800rpm-6000rpm WOT and 35-37psi hot 190F+ idle (1080-1100rpm). J.Rob

I do all the same except I’ve never done the stick shift mod. You have any pics?
 
I do all the same except I’ve never done the stick shift mod. You have any pics?

There are some on here in my past big and small block builds. You may find them in my 512/522 build threads I think? I've got a new phone and laptop--so it will take me way longer than I have to find pictures. Sorry J.Rob
 
Enlarge oil pickup to 1/2" NPT Hemi size and radius all instersections with the backside of a round carbide burr, disassemble oil pump and radius and remove all casting marks with a sandroll, remove oil pump relief valve and polish with some Scotchbrite, enlarge mains 2,3,4 with a long 9/32" drill bit, also since this is a 4spd car drill rear face of thrust bearing to intersect main oil feed 1/32" diameter. That's pretty much it. Engine had very good oil pressure trends with 76psi at 3800rpm-6000rpm WOT and 35-37psi hot 190F+ idle (1080-1100rpm). J.Rob


I’m thinking about the oil hole in the thrust. It makes sense. In fact, it makes sense even for a converter car if you are going to lean on it. At the very worst it wouldn’t do anything. And I don’t see how that could be.
 
I’m thinking about the oil hole in the thrust. It makes sense. In fact, it makes sense even for a converter car if you are going to lean on it. At the very worst it wouldn’t do anything. And I don’t see how that could be.

Agreed. I've had customers swear they can feel a difference--That I don't know about but like you said-I see no real downside. J.Rob
 
Fred from FAK machine in Edmonton had also discovered the use of chink aluminum radiators with an internal oil cooler, was causing thrust failures too. a "Line pressure" test was performed on the cooler lines and a 40 psi discrepancy was observed.
 
Fred from FAK machine in Edmonton had also discovered the use of chink aluminum radiators with an internal oil cooler, was causing thrust failures too. a "Line pressure" test was performed on the cooler lines and a 40 psi discrepancy was observed.

Not surprising. Thanks for sharing, J.Rob
 
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