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Old 07-01-2005, 08:35 PM
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377 Build up help

I'm probably going to go with a 377 small block for my S10. The 400 block I have is a 2 bolt main. I want to run a decent amount of nitrous because this is probably going to be driven daily, so it needs to be somewhat mild off the bottle.

Looking to make around 400hp off the bottle, and I'm leaning towards one of the Comp Nitrous HP Cams.

If anyone has any suggestions on what parts to use to make this kind of power, and be able to handle say....650hp on the bottle, please help me out.

All help and suggestons are greatly appreciated.

Thanks
Dan

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Old 07-01-2005, 08:46 PM
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Shouldn't be much trouble. But adding the 23 cubes back on and keeping it a 400 will certainly make it easier to do.

A 250 shot of nitrous is pretty big. I hope you plan on running forged internals.

Why not go for a 500hp build and maybe a 100 shot of nitrous?
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Old 07-01-2005, 08:52 PM
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Dart Iron Eagle 200cc heads, XE 274 Nitrous cam, All forged internals, of your choice, MSD 6AL2 ignition, Victor JR. intake and a vac secondary 750 Holley.

Keep the compression 10-1 or under for pump gas.

Careful assembly and a good machinist will go a long way towards making it live a happy life. You'll be well over 400hp too.

Larry
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Old 07-02-2005, 01:49 AM
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Thanks for the replies guys.

I don't want to do 500hp motor because it is much easier to make a driveable, somewhat gas friendly 400hp motor.

I can possibly get my hands on some cheaper Vortech heads, do you think they will be worth of what I am looking for?

Thanks again

Dan
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Old 07-02-2005, 05:57 PM
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Do you guys think I can make 400hp with some stock heads, casting #462624, with a "Stage 1 prep job"?????

Thanks
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Old 07-02-2005, 06:11 PM
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Pistons

Crank

The lightweight 350 crank shown.

That is unless the crank in the 350 I bought is forged and in good shape.

Hopefully use stock heads,(#462624) unless I found out they aren't so great. Doing a Stage 1 Prep job if they check out alright.

Edelbrock Performer RPM Air Gap Intake

Street Avenger 770cfm carb.

Cam

Probably the .488"/.501", or maybe one step larger.

MSD 6AL, Blaster 2 Coil, Pro billet Distributor, that package deal.

I need some help on rods though, I have a set of 6" Venolia aluminum rods. They have supposedly been used for 5 passes down the strip. I don't know how to find out if they are forged or not. I may just decide to buy new rods, if so please give some suggestions.

What do you guys think of this setup? Should be a low compression motor that can handle some serious spray. Let me know your thoughts and suggestions.

Dan
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Old 07-02-2005, 07:15 PM
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try not to cut to many corners when running nitrous... bad build and you will be sitting with a hunk of junk faster then you can press the button.
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Old 07-02-2005, 07:57 PM
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I don't think I am cutting any corners with the parts listed, am I?
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Old 07-02-2005, 09:45 PM
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I assume he's referring to the use of the staock heads (624's). If thats the case I gotta agree, Bad Idea. You'd be best to try and get some better heads.
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Old 07-02-2005, 10:59 PM
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I was thinkin so myself, I want to run GM Fast Burns, bet they are kinda pricey, so now I'm thinkin some Iron Eagle Platinums or something along those lines.
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Old 07-03-2005, 07:06 AM
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Throw those aluminum rods on ebay and get some forged steel rods. You dont want the hastle of aluminum rods. They are for race only engines that get torn down very often for inspection. Get a set of Eagle, Scat or similiar rods.

Heads make the engine. You can pick up a nice set of new Dart or similiar iron heads on ebay for around $600 or maybe a little more. It is not worth putting money into used heads unless you are just in love with them. The aftermarket has killed the utility of rebuilding stock heads. It sucks for machine shops, but they just have to start building and selling aftermarket instead of stockers.

Chris
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Old 07-03-2005, 12:36 PM
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One setback is that I have to use a straigt plug head. No one makes a header that will fit angle plug heads for an S-10 that I am aware of.

I was thinking Iron Eagle Platinums 200cc intake runner, 2.02"/1.60" 1.25" spring,72cc combustion chamber.

What do you guys think of these?
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Old 07-03-2005, 04:13 PM
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Quote:
I was thinking Iron Eagle Platinums 200cc intake runner, 2.02"/1.60" 1.25" spring,72cc combustion chamber.
I've heard good things about these heads and they look promising. Im unsure of the pricing, if they aren't to high that you could buy something even better, then I would go for it.

I was also thinking, since the new dart's are out, you might be able to find a real good deal on some original Iron Eagle's. The few sets of dart heads I seen had good clean castings, and were of good quality.

Also, what TurboS10 says on the aluminum rods is absolutely correct.
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Old 07-03-2005, 07:33 PM
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I had a 377 in a Chevelle one time.
Nice winding motor. Pretty much stock, but ran very nice. You wont be dissapointed. Hg
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