Iroc-Z28Man

I've been working on a 350 to swap in to my 86 Iroc Z, so i decide to document it on here

So what i started with is a 880 block out of a 1999 chevy truck, i choose this for the roller cam set up. I sent it out DLK Performance to get checked out, boiled, and honed. I shortly got back the block back all clean.

rojas1826

good stuff man i am also currently trying to get a 350 in my 86 iroc!

Iroc-Z28Man

Good luck, i hope this tread will incourge you to go through with.

After many many months i finally got back into the motor. I researched long and hard and debated on what direction i wanted to go with on the engine. I finally decided on useing these heads i found from Powerhouse https://shop.enginekits.com/osb/itemdetails.cfm?ID=2910 They have 64cc combustion chambers, 2.05 intake valves, and lots off other goodies. best of all they are aluminium. I thought they would work good on a mild street motor.

Iroc-Z28Man

Now with the heads i good order pistons to achieve my target compression ratio of 10:1. Went down to DLK performace and was able to get better prices through them than SummitRacing. So i went with Sealed Power Pistons with coated skirts and 5 cc Dish. Pretty much Four valve reliefs. I also ordered a set of SCAT Light weight Rods also, they only ran me $217 for the set, a pretty good deal if you ask me. After my parts cam in i sent out my crank and flywheel and had them balance the rotating assembly for me, which is a must for any motor IMO.

I got all my parts back last week, with the pistons pressed on the rods and now the fun part starts Assemble. Which i just did literatlly an hour ago. I got the crank in and checked the clearences with plasigage and got it torqued down, along with the rods and pistons in.

Iroc-Z28Man

Just to look into how much i got in to the motor so far.

880 Short block (craigslist) $100
Block cleaned and honed $150
Crank Polished $60
Aluminum Heads,
Longer push rods(with Shipping) $826.19
Pistons $137.84
Rods $217
ReRing kit $90
Damper $56.47
Balancing $266.70
Total (so far) $1904.2

This week i'll be ordering the Cam, headgasket, and some other odds and ends.

klause83z28

Money adds up if you wanna get it done right.
Have you thought about the cam yet? What specs are you thinking about running?

Cheers!

torque_is_good

with respect to pricing, you found that many local shops will try and meet or beat Summit's pricing. It's a no brainer for them. They have zero carrying cost so even if they make 5% or 10% profit it's a cash deal with no carrying cost and they created a good reference. My local Advance Auto parts matches or beats every on-line price that i find and orders item that they don't stock. I end up saving much more due to no shipping fees

Military Clone

what kind of power are you thinking that you might make.

Iroc-Z28Man

I have thought of the cam, i have in mind a COMP Cams computer compatible roller cams shaft. The spec sheet is found here http://www.compcams.com/Company/CC/c...?csid=213&sb=0 I think it will work well with my set up, i'm looking to stick with the TPI. The lift may seem high but with the roller lifter it'll be no problems.

Anyone use this line of camshafts in their TPI car?

Iroc-Z28Man

Power? Well my machinist/engine guru thinks 450 hp with a quality tune on the motor, but i would be happy with the 350hp really. Besides my T5 won't take much abuse at that power.

five7kid

iTrader: (14)

450 HP at 5400 RPMs (max powerband per Comp) is a pretty difficult task for a 350. You're talking over 435 ft-lbs torque to get there. While it might peak at 435 ft-lbs, it isn't likely to maintain that at 5400 RPMs.

Stock TPI hardware isn't going to cut it, although a Stealth Ram would support those heads well.

I'm sure it will be a nice jump from the 305, but 450 HP is a bit optimistic.

Iroc-Z28Man

yeah, like i said i'd be happy with 350, the stock tpi stuff will be heavily ported to make up for the lack of flow in the intake but it will definately be the bottle neck of the engine. Will see how it'll perform, until i swap the t5 for a t56 i think what ever power the engine makes will work well. Once the funds accumulate, first t56, then different maybe better FI, then possibly a standalone computer.

Iroc-Z28Man

I order my cam today, same one as above. Totally came out to $286, hopefully that and my headgasket will be in by this weekend so i can install the cam and heads.

Iroc-Z28Man

I got my cam in today, installed it and now i started polishing my intakes today. hoping for good results on that