Head question 74 L48
Drifting
Joined: Jun 2000
Posts: 1,955
Likes: 2
Re: Head question 74 L48 (Stewart's74)
Hey Stew,
They should be 882 castings. If I remember correctly the L82 heads were also 882 castings but with bigger valves. I had my 882s punched out for the bigger valves and a bowl blend done along with a valve job. They ran pretty well, but I got greedy and ponied up for the AFR 195 heads. I never ran the 882 heads at the track so I don't have a good baseline, but it was definitely fast just with the upgraded 882s. If you check Chevy Hi Performance's head flow data they kind of bag on the 882, I guess it depends on what you really want from the car. FYI I had my heads done for about $250, the AFRs are $1250.
Take care,
Jeff
They should be 882 castings. If I remember correctly the L82 heads were also 882 castings but with bigger valves. I had my 882s punched out for the bigger valves and a bowl blend done along with a valve job. They ran pretty well, but I got greedy and ponied up for the AFR 195 heads. I never ran the 882 heads at the track so I don't have a good baseline, but it was definitely fast just with the upgraded 882s. If you check Chevy Hi Performance's head flow data they kind of bag on the 882, I guess it depends on what you really want from the car. FYI I had my heads done for about $250, the AFRs are $1250.
Take care,
Jeff
Thread Starter
Safety Car
Joined: Aug 2000
Posts: 3,943
Likes: 44
From: Florham Park NJ Port Credit Ontario
Re: Head question 74 L48 (no_radio)
Thanks for the info Jeff.
I am trying to find a set of 041's or 186's with the big valves. I have also heard that our stock ones are dogs. I'd be in devorce court If I buy AFR's etc so I am looking for heads in the bargain arena.
I am trying to find a set of 041's or 186's with the big valves. I have also heard that our stock ones are dogs. I'd be in devorce court If I buy AFR's etc so I am looking for heads in the bargain arena.
Melting Slicks
Joined: Apr 2001
Posts: 3,399
Likes: 278
From: Olmsted Falls, Ohio
Re: Head question 74 L48 (Stewart's74)
One thing to think about. If you buy used heads how much is it going to cost you for the heads, new valves, springs, retainers, rockers, etc. that you might need to get to bring the heads up to par. If all that totals less than new heads then OK, but if not, then all the work to save a couple of bucks is not worth it.
If you can do all the head work yourself you can get the parts to make a like new set for about 1/2 the cost of new heads. Just don't use a spring rate that's going to kill your cam if you don't change that. After all, your cam, if original, now has a lot of miles on it too.
(OOPS sorry, didn't notice your sig about the new cam)
[Modified by KenSny, 11:50 AM 1/31/2004]
If you can do all the head work yourself you can get the parts to make a like new set for about 1/2 the cost of new heads. Just don't use a spring rate that's going to kill your cam if you don't change that. After all, your cam, if original, now has a lot of miles on it too.
(OOPS sorry, didn't notice your sig about the new cam)
[Modified by KenSny, 11:50 AM 1/31/2004]
Race Director
Joined: Dec 1999
Posts: 19,610
Likes: 778
From: Forked River NJ
Re: Head question 74 L48 (KenSny)
:iagree: Wit hall the work that is needed on these old heads you are almost ahead of the game going with a good set of new heads. Plus they flow much better than the old castings. Get all the costs of rebuilding the old heads then the cost of new heads and show it to your wife. You will have more HP also. Tell her aluminum is lighter than iron and you will save gas by going to aluminum heads so you are saving money in the long run :jester
Le Mans Master
Joined: Oct 2002
Posts: 7,098
Likes: 378
From: Las Vegas - Just stop perpetuating myths please.
Re: Head question 74 L48 (Stewart's74)
For used heads try:
Performance Chevy Products
@(602) 254-9586
2995 W Whitton Ave
Phoenix, AZ 85017
They used to advertize Chevy used heads with SS valves and pocket ported for cheap but haven't talked with them for a couple of years. Thier pocket porting was cheap and really looked good on my WP torquers. I was so impressed that I would have to recommed them to anyone. My torquers where painted and shipped for free too. Just insist on umbrella valve seals or you'll get stock O-rings only. Ask, they may take trade-ins?
Let us know what they say Stew. :yesnod:
Performance Chevy Products
@(602) 254-9586
2995 W Whitton Ave
Phoenix, AZ 85017
They used to advertize Chevy used heads with SS valves and pocket ported for cheap but haven't talked with them for a couple of years. Thier pocket porting was cheap and really looked good on my WP torquers. I was so impressed that I would have to recommed them to anyone. My torquers where painted and shipped for free too. Just insist on umbrella valve seals or you'll get stock O-rings only. Ask, they may take trade-ins?
Let us know what they say Stew. :yesnod:
