383 stroker
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Cruising
Joined: Feb 2013
Posts: 13
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383 stroker
I'm doing a 383 stroker motor using an 89 L98 motor with aluminum heads. What cam can I use & can I use the ECM as is. I'm going to keep the stock compression ratio. Thanx in advance for your time
Race Director
Joined: Nov 2003
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From: Overland Park Kansas
2020 Corvette of the Year Finalist (appearance mods)
C4 of Year Winner (appearance mods) 2019
Unless it's pretty radical, many/most reuse the stock ECM. Some do, however, upgrade from mid 80's to late 80s...or even MAP systems. (90-91).
Depends on your situation/goals.
Safety Car
Joined: Jan 2004
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Race Director
Joined: Nov 2003
Posts: 12,221
Likes: 446
From: Overland Park Kansas
2020 Corvette of the Year Finalist (appearance mods)
C4 of Year Winner (appearance mods) 2019
pick a cam that matches the flow ability of your head. IOW, where lift matches the roll-off point of the intake port flow. Don't worry about cams that make power above 5k rpms. Duration @ .050 no bigger than 220...and maybe as little as 211-212.
Race Director
Joined: Apr 2003
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From: moraga ca
What are you going to use the car for, just cruising, street/strip, autocross, the Texas mile? Are emissions a factor. What about fuel economy? After you answer these questions, you'll get better cam choice answers.
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Race Director
Joined: Nov 2003
Posts: 12,221
Likes: 446
From: Overland Park Kansas
2020 Corvette of the Year Finalist (appearance mods)
C4 of Year Winner (appearance mods) 2019
Since you're not jumping all over the details, should be assume it's stock heads, intake, etc...with only the addition of additional stroke? No head porting?
Don't make us TWIST your arm?
Don't make us TWIST your arm?
Race Director
Joined: Apr 2003
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From: moraga ca
Burning Brakes
Joined: Jan 2009
Posts: 871
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From: Shepherdsville Kentucky
If you're investing in a 383 you should open up the air flow to take advantage of your gains. One thing will lead to another and you'll likely find yourself porting and replacing many items.
If you're thinking a new chip is a big obstacle you'll find it is among the cheapest of the parts you'd end up buying.
If you're thinking a new chip is a big obstacle you'll find it is among the cheapest of the parts you'd end up buying.
Safety Car
Joined: Nov 2009
Posts: 3,973
Likes: 341
From: Adelaide South Australia
I am doing a 383 also (engine still in a shipping container) I spoke to quite a few people and started a similiar thread, settled on a Howards retro roller kit (85 engine),
500/510 lift (or 530/540 with 1.6 rockers)
225/231 duration (at .050)
112 Lobe separation,
Cant tell you how it works yet, but thats the result of my homework on the subject,
but like the guys above have said, it depends a lot on the mods above the block.
500/510 lift (or 530/540 with 1.6 rockers)
225/231 duration (at .050)
112 Lobe separation,
Cant tell you how it works yet, but thats the result of my homework on the subject,
but like the guys above have said, it depends a lot on the mods above the block.
Safety Car
Joined: Nov 2009
Posts: 3,973
Likes: 341
From: Adelaide South Australia
I have a Ed Wright Automotive Fastchip, he is one of the very few who do 85 computer chips, it made a big difference to mine, I will be sending it back soon to be reburnt due to the upgrades and new engine.
Safety Car
Joined: Nov 2009
Posts: 3,973
Likes: 341
From: Adelaide South Australia
