High Performance

Significantly higher performance over stock... not for aftermarket air filters and mufflers. Discuss blowers, super-chargers, turbo, nitrous, replacement performance engines...
Capote
Capote's 4.2L Rear-mount Turbo Build
Replies
8
Views
204
Capote
Boricua SS
Cam swap complete!
Replies
9
Views
937
Boricua SS
MRRSM
After-Market HP Con-Rods for GM 4.2L LL8
Replies
0
Views
595
MRRSM
mvtedesco7771
New project
Replies
3
Views
1,626
dmanns67
E
billet cam blanks - with VVT oil passages
Replies
2
Views
907
efi-diy
M
4.2 turbo in 1950's chevy pick up
Replies
4
Views
2,337
Envoy_04
00brado
turbo injector help
Replies
2
Views
1,747
00brado
E
turbo pistons
Replies
0
Views
1,312
efi-diy
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