New guy with concerns...

[JoeSmithUSMC]

Hello everyone first time poster here, long time lurker. Finally bought my dream truck and looking to swap a built 355 in it. This is local and sounds and looks amazing but I'm worried about longevity/reliability. The guy built it for drags... I drive under 100 miles a week. Says he built it with his father but doesn't trust his dad with the power, claims 450 HP. 3k miles since build. Here's what it's got:
1969 truck block, 4 bolt main.

.30 over w/ dome pistons
Comp. 565 lift cam
2.02 valves / dual springs
Roller rockers
11 : 1 compression
Dual 600 holleys
Ported tunnel Ram
Forged GM crank shaft
1 piece oil pan gasket
Letting me drive the car before pulling the engine. I obviously won't run the dual carbs or the tunnel ram. He has an edelbrock 1406 he will put on and tune for me. Truck is DD and used occasionally on weekends for mud/trail/abuse. Thoughts? Thanks in advance.

 

[animal]

At 11:1 you may have problems with pump gas I'll let some of the more well versed folks like @HotRodPC or @bucket comment on the other internals.

 

[HotRodPC]

Really? a 5.65 lift cam and 11:1??? Daily driver grocery getter huh?

 

[marks86]

lol that motor belongs in a 69 Nova, and the truck need a stock jegs 350

 

[87scotty]

Whats wrong with a bad mfer grocery getter!

 

[HotRodPC]

lol that motor belongs in a 69 Nova, and the truck need a stock jegs 350

I'd agree it needs to be in something like a 69 Nova, Chevelle, Camaro or whatever, but a Stock GM Performance 350 from Jegs is under doing it too. Split the difference between the 2 and you'd have something fun and streetable that you could daily drive if you can afford the gas. But that engine described isn't going to run on pump gas, and it's going to have overheating issue in city traffic.

Whats wrong with a bad mfer grocery getter!

Not a damn thing wrong with a bad ass grocery getter, but it needs to at least be streetable. Building a motor that needs 3000-4000 stall converter to launch, isn't for the street. So are you going going to run a 2200 stall converter and not get the launch power, or are you going to give it 2500 rpm to take off from a stop light and have the 3000-4000 stall it needs to launch if racing? And this motor will need to run at least a single plane intake manifold even if he takes off the tunnel ram, so there goes all the low end grunt and it'll take a 1/2 gallon of gas to get it to take off from a stop light.

That's JMO of course. I've ran some hot motors on the street before in a truck with 4.56 rear gears, 3000 stall that I actually got about 2800 out of and it needed more. But even then that was with a 10.1 pistons and with a little valve overlap and a 5.25 lift cam actual compression ratio was lower, maybe a 9.2ish or so and I was able to run Super pump gas and no problems other than overheat sitting in stop and go traffic in Los Angeles rush hour traffic. Biggo radiator, flex fan, and electric booster fans to help out and it still ran 220-240 on a daily basis. Also back then it was Super Leaded and 93 octane. Today pump gas is 91.