For all you 355 guys what is the most power you are amking out of those mean little devils. I know they are just a forged rebuild that doesnt gain much but witht he forged internals you can run better heads and a bigger cam correct? Well thats what i wanna know. Can you dip into the 11s with this?

 

internals have nothing to do with power. I can have a cast crank and crappy sock type pistons and still make the same power as one who has thousand invested in a forged set up. but thats na when power adders are added they rule.

 

Thats somewhat contradictory, haha.

I think he already understands that the extra 5 cubes isn't adding significant power, and is right in his statement that you can run more power through an aftermarket bottom end. I don't own one, but yes they are out there.

So much depends on suspension and weight. Maybe you should ask about a specific HP level. Atljar went 11s on the stock 350 bottom end AND stock heads! he used a large cam, deep gears, skinnies, and some bitchin good weather. So if you make good choices with a 355 and nice topend it shouldn't be a problem at all.


-brent

 

not really ..........a rebuilt 355 with quality aftermarket parts will make more power due to lighter components, better balancing, and less friction. (assuming everything is done correctly).

 

OKAY MAYBE if possible you can gain a couple hp like 10hp but nothing drastic. smaller bearings, lighter componets will add to a little but the weight issue is mainly for spinning up faster.

 

You can build up a lil 355 for cheap and throw some gas on it, plenty stout car. Jason Warren has a 355 solid roller doing 9.50s, Brady went plenty fast in a TT 357, he used the GMPP Forged Crank.

 

What type of computer, stock? Carb?

As mentioned, lighter and balanced can make more rwhp, but also correctly gapped rings for the application.

You can have a killer bottom end, but gap your rings wrong it will negate if not cost you rwhp.

 

local guy is hitting 10.40s on a 355 LT1 with bolt-ons and some gas (along with a braked th-400 and a 9" on 28" drags )

 

uhhh....riiiiiiiight
believe whatever you want............but this is what ive seen

stock bottom, heads/cam .....high 11's.

355 bottom, heads/cam.....knocking on 10's, and some are in the 10's.

 

My last engine was a 355. stock rods and crank. TRW pistons. home ported heads. stock intake valves 1.6 exaust valves. 306 cam and 1.5 roller tip rockers. I went 11.56 at 118 in the 1/4 NA and 11.09 at 124 on a 150 shot. I sold the engine runnning perfect. I have a 383 now.

 

awesome NA times.........

but only dropping .47 with a 150 shot?!?! were you spinning a lot?

 

1.76 60 foot. I wanted more off the bottle also. I never hit 10s so I built a new engine. I should of put a set of skinneys up front and hit the 10s LOL

 

so basically a 355 is just a forged bottom end. How much of a price difference am i looking at between a 355 bottom end or a 383 bottom end? I saw a short block from Nu tek motorsports for around 3200. That isnt bad in my book. What about Combitnation motorsports. I have nothing but good things about them on here. How does their price compare to Nu tek?

TIA!!

Eric

 

no.......a 355ci is when you take a 350ci engine and bore it .30 over for slightly larger pistons........thats why it only gains 5ci..........but it can be forged or cast or whatever..........most people just get forged because, while the engine is apart, might as well use the best parts.

 

is it possible to hit low 11s with a 355?