4.8 Question !
Thread Starter
Joined: Feb 2006
Posts: 356
Likes: 3
From: SoCal-Victorville
4.8 Question ! I don't know if this is the right section for this !
I found a really good deal on a 4.8 LS engine. I just want to know if 317 heads will fit on it "? I know they'll fit on a LS1 but the 4.8 is the smallest bore that GM offers. We have plans of boosting this engine and it'll go into a 1974 Datsun 260Z. I know stock they the hp ranges from 270hp to 295hp and torque is 280lbs to 304lbs. I'm thinking this would be a good engine for the 260 stock but why not get more out it especially if its just a project and won't be on the streets alot if we can put down between 375whp and 450whp that would be great for a car that weighs 2500lbs.
I found a really good deal on a 4.8 LS engine. I just want to know if 317 heads will fit on it "? I know they'll fit on a LS1 but the 4.8 is the smallest bore that GM offers. We have plans of boosting this engine and it'll go into a 1974 Datsun 260Z. I know stock they the hp ranges from 270hp to 295hp and torque is 280lbs to 304lbs. I'm thinking this would be a good engine for the 260 stock but why not get more out it especially if its just a project and won't be on the streets alot if we can put down between 375whp and 450whp that would be great for a car that weighs 2500lbs.
I am aiming for 650 at the wheels through an automatic and a 9". I am trying to trade my s60 for a 9" at the moment so I can run lower than a 3.54 gearing.
I am going to be running a 226/232 howards cam, a borg warner s475 1.32 A/R with a quick spool valve. Should have boost about 4500 and shifting around 7500-7800.
Only thing I am doing to the engine is katech rod bolts, the cam, and new springs and pushrods and 241 heads Maybe some caddy lifters if I decide they are needed. With the 241s i will be at 8.8:1 CR. Guy over on theturboforums.com has a 4.8 with a 230/236 cam with a pt88 pushing 702 at the wheels on E85, 6k worth of abuse and looks brand new
I am going to be running a 226/232 howards cam, a borg warner s475 1.32 A/R with a quick spool valve. Should have boost about 4500 and shifting around 7500-7800.
Only thing I am doing to the engine is katech rod bolts, the cam, and new springs and pushrods and 241 heads Maybe some caddy lifters if I decide they are needed. With the 241s i will be at 8.8:1 CR. Guy over on theturboforums.com has a 4.8 with a 230/236 cam with a pt88 pushing 702 at the wheels on E85, 6k worth of abuse and looks brand new
Thread Starter
Joined: Feb 2006
Posts: 356
Likes: 3
From: SoCal-Victorville
I am aiming for 650 at the wheels through an automatic and a 9". I am trying to trade my s60 for a 9" at the moment so I can run lower than a 3.54 gearing.
I am going to be running a 226/232 howards cam, a borg warner s475 1.32 A/R with a quick spool valve. Should have boost about 4500 and shifting around 7500-7800.
Only thing I am doing to the engine is katech rod bolts, the cam, and new springs and pushrods and 241 heads Maybe some caddy lifters if I decide they are needed. With the 241s i will be at 8.8:1 CR. Guy over on theturboforums.com has a 4.8 with a 230/236 cam with a pt88 pushing 702 at the wheels on E85, 6k worth of abuse and looks brand new
I am going to be running a 226/232 howards cam, a borg warner s475 1.32 A/R with a quick spool valve. Should have boost about 4500 and shifting around 7500-7800.
Only thing I am doing to the engine is katech rod bolts, the cam, and new springs and pushrods and 241 heads Maybe some caddy lifters if I decide they are needed. With the 241s i will be at 8.8:1 CR. Guy over on theturboforums.com has a 4.8 with a 230/236 cam with a pt88 pushing 702 at the wheels on E85, 6k worth of abuse and looks brand new
Thanks for the info everyone ! I just have to secure the engine now and we'll be getting started after we finish his 90' Procharged Vette(its up and running, just working out the little odds and ends).
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here are some useful links for ya
700hp dyno
http://www.theturboforums.com/smf/in...topic=124181.0
tear down after 7k miles of same motor
http://www.theturboforums.com/smf/in...topic=132278.0
This is a different one
700hp dyno
http://www.theturboforums.com/smf/in...topic=124181.0
tear down after 7k miles of same motor
http://www.theturboforums.com/smf/in...topic=132278.0
This is a different one
The best turbo I had on that setup was a Master Power T70 with a .68 a/r. Made 505 are the rear wheels with only a small 208/210 .551/.551 116lsa cam, at 11psi of boost. I think I ran 12.6's @ 107mph weighing about 5500lbs.
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After talking to him for a while, I decided on a 4.8 since I got one for practically free lol. Me n him have talked quite in length about his setup, and what I am doing for my setup.
Should be pretty fun. I love doing stock motors because if i blow it up, im not out much
After talking to him for a while, I decided on a 4.8 since I got one for practically free lol. Me n him have talked quite in length about his setup, and what I am doing for my setup.
Should be pretty fun. I love doing stock motors because if i blow it up, im not out much
