compression? hp? torque guesses (i do not know)

[Marty68]

i own a 51 GMC. MII coil rear tremec 5 speed. it has (soon to be had) a 66 283. the 283 swallowed something no compression on 1 cylinder in each bank. i accuired an engine rom a club member..
here are its "STATS"
1978 vette 350 40 k miles
stock bore stock stroke
882 heads .500 springs bronze guides ? 202 valves?

eagle steel bem rods
roller rockers double roller timing chain
peed Pro H617CP Small Block Chevy 350
.275 Dome Hyper Pistons STD Bore 5.7" SBC

summit cam 1104

the question is what would be the compression?

whats estimated HP?
estimated torque?
can i cool it with my stock radiator? it did fine with the 283.

[The Rocknrod]

If you know the specs you might be able to get it here:
https://www.gofastmath.com/Horsepowe...wer_Calculator

[Tom]

With 882 heads I'd guess in the 300-340hp range.

[Marty68]

Originally Posted by Tom

With 882 heads I'd guess in the 300-340hp range.

they have been "worked" builder sauys over 9:1 with 2.02 heads.. cam is "small". builder estimated 400. i think that is being very optomistic. if it sounds like double the tired 283 i will be very happy.
i do not have it running yet
i went ahead and ordered an electric fan.
needed a different alternator bracket
t stat housing.
guages
rebuild carb
valve covers air cleaner.
$$$

[Accelo]

New illuminations of knowledge have descended upon Detroit's engineering laboratories, permitting fresh lodes of horsepower to be extracted from clean-burning, no-lead-fueled engines, which means that the new 1978 Corvette comes to the showrooms with as much as 220 hp available from the optional L-82 350-cubic inch power plant. (A respectable 185-hp — up five hp from 1977 — is packed into the base L-48 engine.)

882 castings are the old style "heavy weight", 76cc combustion chamber (port size is in the 160cc range)

Note that the 882's came in both 1.94 and 2.02 intake sizes from the factory. An original 74 Z-28 LT1 had the 2.02 versions with screw in studs and guide plates from the factory.

The compression ratio, with the dome you described, will be around 9:3.

The head flow numbers could be improved with Vortecs. I'm not guessing at the HP.
Cheers

[Marty68]

Originally Posted by Accelo

New illuminations of knowledge have descended upon Detroit's engineering laboratories, permitting fresh lodes of horsepower to be extracted from clean-burning, no-lead-fueled engines, which means that the new 1978 Corvette comes to the showrooms with as much as 220 hp available from the optional L-82 350-cubic inch power plant. (A respectable 185-hp — up five hp from 1977 — is packed into the base L-48 engine.)

882 castings are the old style "heavy weight", 76cc combustion chamber (port size is in the 160cc range)

Note that the 882's came in both 1.94 and 2.02 intake sizes from the factory. An original 74 Z-28 LT1 had the 2.02 versions with screw in studs and guide plates from the factory.

The compression ratio, with the dome you described, will be around 9:3.

The head flow numbers could be improved with Vortecs. I'm not guessing at the HP.
Cheers

thank you. builder seems to think it is 400 hp. i doubt it .. but it will be a huge increase from the 66 283. ran good much better with the 500 cfm carb than the 2 bbl