|
mild build 454
I'm building a pair of 454 mag engines for a friend, he wants to hot rod it a little, Ive not messed with these before so all info is appreciated
They are fresh from the engine shop with stock short blocks assembled, forged internals, fresh 088 heads but not installed. He has 502 MPI intakes and ecms for these builds. What cam would work good with just a spring upgrade.........he's also thinking of low boost small blowers, these will be going in a 29 Outlaw with B 1's....he thinks there gen 6 blocks, going to pick them up Saturday Does this sound like a thousand other threads..........lol |
Is he upgrading exhaust??
|
It will new for the application he picks
|
for a mild build,,651 cam and a 5 liter whipple.:D
|
Originally Posted by sutphen 30
(Post 4678303)
for a mild build,,651 cam and a 5 liter whipple.:D
|
Originally Posted by F-2 Speedy
(Post 4678305)
and two new bravo's......:lolhit:
|
On a serious note,I'd be inclined to use an HP500efi cam,,that would juice it up some for you,will need an ecu reprogramming.
|
All very close in specs and would work well.
Standard Crane 731 https://www.summitracing.com/parts/crn-168731/overview/make/chevrolet 731 on a 114 lob sep https://www.summitracing.com/parts/c...make/chevrolet I think 500efi cam https://www.summitracing.com/parts/c...make/chevrolet |
Originally Posted by sutphen 30
(Post 4678363)
On a serious note,I'd be inclined to use an HP500efi cam,,that would juice it up some for you,will need an ecu reprogramming.
|
Thanks guys just got back from Wichita with the engines, keep the ideas coming....
|
Finding the 29 outlaw weights 6800 with twin BBC, so if the boat doesn't catch air, 450+ should not be an issue on the drives
|
I would contact Top Quality Source for Boat MEFI ECU Tuning | CO, KS, OK, TX, NE, AR, MO | MEFI Tuning and see if they have an ECM tune already written for what you are building with one of the listed cams.
|
Originally Posted by Rookie
(Post 4678408)
I'm putting together 2 Merc 420's currently and the only thing I'm changing are the cams and going to hydraulic roller lifters. I'm using HP500EFI cams, Crane 169621. Great minds think alike. It looks like a great combination.
|
Originally Posted by Griff
(Post 4678449)
I would contact Top Quality Source for Boat MEFI ECU Tuning CO, KS, OK, TX, NE, AR, MO MEFI Tuning and see if they have an ECM tune already written for what you are building with one of the listed cams.
|
I noticed the specs are the same on the 168761 and 169621 112lsa
|
Originally Posted by F-2 Speedy
(Post 4678466)
Are the 420's 454 cubes ? what heads are you running on these.
|
Originally Posted by Rookie
(Post 4678478)
Mercury 454's similar to your mag motors, GM rectangle heads, flat cam, roller rockers, single plane 800carb and better exhaust.
|
| All times are GMT -5. The time now is 06:41 AM. |
Copyright © 2026 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.