It all comes down to, how match money you are wanting to spend………..

 

Pics as promised.
Here's what I started with:

 

This series shows the engine coming out.

 

Good stuff there! Love that part of the job


Nice color too!

 

Pulled the DS head. Looks like pretty normal carbon deposits, not much of a ridge at cylinder top. What reall shocked me was all the broken down oil deposits in the lifter valley. There were actually 6 loose chunks the size of half a grill brickette. I purchased the car Jan 2013 and put 6K on it last year. Oh by the way odometer reads 112k miles.

 

Thanks, you know the last time I pulled an engine I was 25 yrs old. Now I'm 56. He he, I don't remember it being that hard to get up off the floor about 30 times.

 

Engine on stand now, pulled PS head, rolled over and removed pan and half the piston assemblies. I did some measuring and discovered he crank had been ground .010 under. The journals look really fresh as well as the main & rod bearings.

 

Crank & flexplate out. Also a look at the upper mains.

 

Piston assemblies and lifters. Every piston showed signs of skirt wear. #1 cylinder had a broken compression ring. Three lobes on the cam were badly wiped, note the dishing of the lifter faces.

 

Going to lunch now, more this afternoon.

 

LOL! I'm not used to seeing bare blocks on engine stands that have a starter, fuel pump, and motor mounts still attached! Looks kinda weird.

Scott

 

Here's where I'm at with the heads. Rockers, valves & springs removed & beginning initial clean up. Pics show before and after blast cabinent.

 

 

Thanks for all the comments. I really do understand what is being said re: better heads but I am on a budget for now plus spring is beginning to pop. I want to have the car running by Apr 1st if possible so to wait for the funds for heads is not an option at this time.

By the way compression should be 9.21:1 with the build.

These pic posts bring me up to date for now but I will continue to post in the days ahead. Please stay with me and chime in any time.

 

Not a chance could that motor make anywhere near those numbers with 8.5 compression, stock l-48 heads, and that cam. Maybe 230-240 Net HP, 275 Gross

 

I was thinking the same thing, but didn't want to say anything. I thought those numbers were a little generous.

 

It's a stroker motor, 383 I'm assuming, obviously new pistons are involved, I'm assuming a decent CR.

If you look at the horsepower ratings from '71 and '72, you see that the otherwise identical 350 ci engines "lost" 60-70 horsepower with the change from gross to net horsepower ratings.

Scott

 

No mention of the compression ratio by the OP but even with a 9:1 compression he is retaining the L-48 heads with the smaller values, not the L-82 882 heads with the bigger valves. He also is using a cam with .454/.454 which is not quite the L-82 cam with .450/.460, 222 duration, 114 LSA so I stand by my original HP estimate.

The HP drop in ratings occurred in 1972 when all engines were rated as NET instead of the misleading GROSS number. The 71 LT-1 with 9:1 compression with the bigger valve heads and a different cam than the L-82 was rated at 330 GROSS HP, the 72 LT-1 (same engine as 71) was rated at 255 NET HP and the 74 L-82 with the L-82 cam, 882 heads, and 9:1 compression was rated at 250 NET HP. 230-240 NET HP with the OP's setup looks about right, optimistically.

He needs MUCH BETTER heads, a roller cam (ideally) and more compression to hit higher HP-NET/GROSS. I am hoping for 310-325 RWHP/380-400 Gross HP (coming up from the Stock L-82's with no emissions, headers. 2.5 duals with a weak #6 cylinder of 233 RWHP when my L-82 is rebuilt-Short block being picked up tomorrow by the engine builder- with a Howards Roller cam (.510/.525, 219/225 duration, LSA 110), AFR 180 65 CC heads (10-10.2:1 compression with the Felpro 1094 gasket) etc. Without the compression being bumped significantly, much better flowing heads-not necessarily AFR's, and a much better aggressive cam to match the heads and cam, I don't see how he can hit those numbers, stroker or not.

 

Ya know, madam, after thinking about it, I understand the need to save money, and a set of aftermarket heads is kinda pricey, even cheap ones, but... I just can't see any sense in sinking even a nickel into those old heads. They just aren't worth it. And, BTW, if you are set on getting on the road by April 1st, you're either a day late and a dollar short, or you've got a whole year to save up and get some good heads. Just take a look at the calendar!

Scott

 

I see "882" casting number on at least one of the OP's heads.. That's the L82 number, correct?