Here is an interesting read I found that list stock bore and stroke. (I
couldn't remember if the 427 was a 396 block and 454 crank or a 454 block and
396 crank so I had to look it up)
Gene
396
The 396in³ (6.5L) V8 was introduced in the 1965 Corvette as the
L78 option. It had larger bore and stroke at 4.094in by
3.76in (104mm by 96mm) than any previous small-block and
produced an amazing 425hp (317kW) and 415ft.lbf
(563Nm).
1965 Chevrolet Corvette
1967-1969 Chevrolet Camaro
[edit]
402
The 402 was simply a 396 bored out by .030in (0.8mm).
[edit]
427
The huge 427in³ (7L) V8 was introduced in 1966 on the Corvette. Bore was up
to 4.25in, and the power ratings were said to be conservative. The
hydraulic-lifter L30 (L36 in 1968) option was rated at 390hp
and 460ft.lbf (624Nm), while the solid-lifter L72 pushed out
425hp (317kW) and 460ft.lbf (624Nm). The 1967 L89
(1968 L71) increased this to 435hp (324kW) and
460ft.lbf (624Nm), while the L88 from the same years produced
560hp (418kW).
The 1969
ZL1 is one of the best-remembered big-blocks. Putting out 430hp
(321kW) and 450ft.lbf (610Nm) from a special camshaft and
tuned Holley carb in an aluminum intake, it was a $2000 option! But the
all-aluminum engine block weighed just 98lbs, less than half the weight of
a similar iron block. Just two production Corvettes were made with this option,
making it one of the rarest.
The 427 was also used in GM full-size trucks.
1966-1969 Chevrolet Corvette
[edit]
454
The big-block was expanded again for 1970 to 454in³ (7.4L)
with a 4.251in (108mm) bore and 4in (102mm) stroke. The
1970 Corvette LS5 engine produced 390hp (291kW) and
500ft.lbf (678Nm). There was a one-off LS7 which was tuned
for performance, with 465hp (347kW) and "just" 490ft.lbf
(664Nm). But included was the king of muscle car engines, the LS6
454. This engine produced 450hp (336kW), but replacing the headers could bring it
up to 500hp (373kW).
Power began falling off after 1970, with the 1971 LS5 producing 365hp
(272kW) and 465ft.lbf (630Nm), and the new LS6 option
coming in at 425hp (317kW) and 475ft.lbf (644Nm). Only
the LS5 remained in 1972, now at just 270hp (201kW) and
390ft.lbf (529Nm). The 1973 LS4 was at 275hp
(205kW) and 390ft.lbf (529Nm), with 5hp (4kW) and
10ft.lbf (14Nm) gone the next year. 1974 was the last year of the
454 in the Corvette.
GM continued to use the 7.4L 454 in their truck line, introducing a new
Vortec 7400
version in 1991.
1970-1974 Chevrolet Corvette
- Original Message -
From:
Clint Hooper
To: The Chevelle Mailing List
Sent: Tuesday, July 19, 2005 9:46
AM
Subject: Re: [Chevelle-list] Stroked
396
A 396 block would have to be notched to clear the
longer stroke. 454 blocks are easy to find,though.
Clint HooperHH Custom,owner1969 El Camino ProTourer2001
H-D FLHR custom baggerhttp://dalesplace.com/misc/friends/clint/clint_hooper.htm
- Original Message -
From:
[EMAIL PROTECTED]
Anyone have any opinions , experience putting a crank and rods out of a
454 into
a 396 .
Just wondering if this is a combo or not , balancing and all ?
Rick
