How good are 882 Chevy heads?
How good are 882 Chevy heads?
The 441 has a reputation as a good-flowing head among the production 76cc chamber heads. In this particular case, it lost out to the 882 head, but overall it’s a decent head that responds well to pocket port work and larger 2.02/1.94 valves….
| GM 882 IRON | |
|---|---|
| Port: | 151 cc |
| I Flow @ 0.400: | 203 cfm |
What did Chevy 882 heads come on?
the 882 heads were installed on the 350 ci. and 400 ci engines(400 heads had steam holes). The 882 castings had a double heat-riser passage and were prone to cracking beacuse they ran so hot. If you have these on your engine, get rid of them.
How do I know what Chevy heads I have?
Chevy heads have often been identified by sight and most commonly by the different casting shapes on the ends of the cylinder heads. While these casting marks cannot tell specifics about the cylinder heads, they can help identify a performance head from a non-performance head.
Will 305 heads work on a 350?
The best general street improvement going to 305 heads on a 350, is with the 416 castings. If you have open chamber (70+cc) smog heads on the 350, the 416’s will wake it right up. The 1.84/1.50 valves are plenty big enough for general street work.
What are bowtie heads?
Vortec Bowtie cylinder heads are the most powerful cast-iron heads offered by Chevrolet Performance. The heads provide outstanding low-lift flow numbers (the more air you flow, the more potential power) and Fast Burn performance all in an affordable, cast-iron head.
How do you identify World Product heads?
On World heads, casting marks and numbers are found below the valve cover bolts, in-between the valve rocker studs. All World heads have a World casting mark. Located on the left side of the cylinder head top, with the exhaust ports facing you, there is a “W,” indicating World.
How much horsepower does double hump heads add?
“Double-hump” heads were found on many of its high-performance engines in the 1960s and early 1970s. They were manufactured with larger intake and exhaust port volumes and valves for the period, and engines equipped with them had output ratings of more than 350 horsepower.
How much HP do heads add?
Depending on your cam, you can gain anywhere from 40-70hp. Cam and heads can gain you 100+hp.
