I just got two intakes for a friend to blast and both had 21lb injectors on the fuel rail. Is that normal for some years of LT1? I did some searching but all I came up with was 19lb for 305 TPI, 21lb for 350 TPI, and 24lb for LT1. Any help or links with charts would be greatly appreciated.

Thanks!

 

92-93 lt1 has 22lb

 

Both were 94+ fuel rails. They had the B body (Impala, Caprice, Roadmaster, Fleetwood) Hold down for the homeplate silencer... did those cars come with 21lb?

 

I do believe the TPI 350 cars had 22# injectors on them. What color are they?

 

Both were 94+ fuel rails. They had the B body (Impala, Caprice, Roadmaster, Fleetwood) Hold down for the homeplate silencer... did those cars come with 21lb (21.9lb according to a site it was 19.9lb, 21.9lb, 24.9lb)?

 

They are just black. The o rings were half black half brown one set. The other set I don't remember.

 

L99 maybe?

 

possibly

 

L99 came with the LT1 style intake, fuel rails, and throttle body?

 

The L99 got 19lbs, the b-body LT1 got 24lbs.

Yes the L99 was very much the same as the LT1 externally you need to look at casting numbers to distinguish.

 

So these 21lbers are still a mystery lol

Thanks for all the input guys I learned a little today :-)

 

What makes you say they are 21lbs? If you are referencing a PN maybe the reference you are using is wrong?????????????

 

Good point... I know have conflicting data... one site says... Part #17121068 is 21lb flowing 220cc http://users.erols.com/srweiss/tableifc.htm. One site says 24lb flowing 256cc http://www.witchhunter.com/FlowDataPix/rp17121068.jpg

Who to believe lol?

 

The other one that I had is #17106772

I don't know which size it is I can't find any reference to it.

 

http://www.thirdgen.org/techboard/tp...light=17106772

Some TPI injector classifications. 17106772 is 93 GM 3.8L. How much they flowed it doesn't show :-(