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Look forward to seeing how your build turns out, I'm in the middle of a 402 build as well, pretty similar top end to yours except Tony specced me a slightly smaller cam (237/242) and I already had a FAST 102 so will no doubt be missing some top end compared to yours. Fortunately it's going through a T56 so hopefully a bit more will make it to the tyres
Look forward to seeing how your build turns out, I'm in the middle of a 402 build as well, pretty similar top end to yours except Tony specced me a slightly smaller cam (237/242) and I already had a FAST 102 so will no doubt be missing some top end compared to yours. Fortunately it's going through a T56 so hopefully a bit more will make it to the tyres
I'm over in the UK so shipping etc. is a killer!
Sounds like a nice build, I'm chomping at the bits here waiting to get this thing on the dyno. Last I talked to Tony he was pretty far behind so not sure when I'll be getting them yet,hopefully before the end of summer LOL. Is your 102 ported at all?
Sounds like a nice build, I'm chomping at the bits here waiting to get this thing on the dyno. Last I talked to Tony he was pretty far behind so not sure when I'll be getting them yet,hopefully before the end of summer LOL. Is your 102 ported at all?
Nope, not ported, and shipping it to Tony to be ported would be a pain, then would have to pay import duty and all sorts and shipping etc... I'm still tempted to get him to port one and send it over with clutch / pushrods etc. and sell my 102 over here, but really have to question how far down the rabbit hole I want to go, as obviously a nice ported throttle body would finish it off perfectly... Tony is a bad man to speak to LOL
Next step for me is to measure rocker arm sweep pattern so I can then measure up for pushrods and get them made / shipped. That'll be my crunch time for deciding whether to go with a ported 102 etc. I've been distracted doing a bunch of engine bay work so motor progress has stalled for a while.
Currently it's loosely 'assembled' in the car for mocking up as I'm redoing power steering lines and all sorts, so here's a picture
Got the ported LSXRT manifold in from Tony and he said the heads should be right behind them shortly. Man this thing is fuggin huge! Child in picture for size lol.
I'd be interested to see what the flow #'s are w/ the intake bolted down. Will see what reports he sends you. All looks good, glad it's coming together!
I think I am going to go with a ported 102 from Tony, will sell mine over here to help reduce the cost a bit, sadly I don't think the truck manifold fits under my hood (basically a GTO)
Tell me about it! I'm going to spray the throttle body in a textured satin black to continue the theme as it looks so good, I don't know how Tony matches the finish so well, it's witchcraft.
So pleased I went with the stealth look, it was always the thing people would point and chuckle at, that the manifold said 'FAST' on it, nobody wants to explain that it stands for Fuel Air Spark Technology LOL
Looking great, the port work is brilliant isn't it?
I ended up with the ported FAST102 and a ported LS3 TB as well! Oh and a drop or two of break in oil LOL
They do look sexy that's for sure. Seeing your intake makes me wish I got mine shaved. No hiding the LSXRT though, it's friggin huge.
Dropped the heads and other parts off with my engine builder Golen Engines, should be on the dyno by early to mid Sept. Assuming there's no holdup on the pushrods I need to get from Tony once I get him some length measurements.
My only issue right now is Tony and I formulated everything based on .036 quench, Chad doesn't like going that tight and wants to go .040, if I go with .040 it brings my CR from 11.8 to roughly 11.66. I'd like to run as much compression as I can though but I don't know if .14 is really just splitting hairs. My other option is to have them cut .006 off the heads and go from 66 to 65 and bump the CR back up.
Well today was a GREAT day! Finally got the "little guy" on the Dyno and she put down every bit of power I was hoping for!
I can't thank @Tony @ Mamo Motorsports enough for his huge hand in this build. The heads, cam and intake are killer! Even my builder was surprised it made THAT much on a little 402.
Also need to thank my builder who was phenomenal to work with. Couldn't have done it without them! Chad at Golen Engines, really can't say enough good things about them. We made multiple pulls and she just kept spitting out the same number over and over again. He said it would have broke 650 if it wasn't so damn humid(95% air density). He also said he didn't "fine tune" it either so who knows what couple more ponies were there. Still need to add a GZ Vacuum pump on it too!
Damn good numbers man!! Both tony mamo and golden engines are great guys! I think my next engine would be a combo from both of those two. That’s a nice size cam to for that 402 with .675 lift and 1.8 ratio rockers
Thanks guys, I'm stoked on the numbers, one thing I want to look into further is my builder said it dropped off power pretty quickly passed 6500 so he stopped pulling it higher. I'm going to have to see the sheets to see what's going on upstairs.
Anyways heres a quick video I grabbed of one of the runs. Each run was withing 1-2hp of each other.
These results are really impressive for that displacement and the curve looks perfect.
You had mentioned making 650 on a better day but in reality it made that number that day and we just didnt get to see it because that run was cut short (50 more RPM would have likely done it!)
Im thinking these are the first dyno results I have seen with my MMS 235 cathedral heads on a 402 engine (I see these heads alot on a 416 LS3 stroker).
Also the RPM this combination got up on the cam and achieved close to peak torque (and then carried it flat a good ways) was also surprising on the upside (a little earlier than I might have expected and then it carried extremely well)
It should be a really fun ride.....keep us posted when you get the engine installed and driving down the road
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